u-blox EVK-ANNA-B112 User Manual



5 low energy modules. It also describes the different options for

EVK-ANNA-B112

Evaluation Kit for ANNA-B112 Bluetooth 5 low energy modules

User guide

Abstract

This document describes how to set up the EVK-ANNA-B112 evaluation kit to evaluate ANNA-B112 series standalone Bluetooth® debugging and the development capabilities included in the evaluation board.

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EVK-ANNA-B112 - User guide

u-blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this document. Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only permitted with the The information contained herein is provided “as is” and u implied, is given, including but not limited purpose of the information. This document may be revised by u documents, visit www.u Copyright © u

Document Information

Title EVK-ANNA-B112

Subtitle Evaluation Kit for ANNA-B112 Bluetooth 5 low energy modules

Document type User guide

Document number UBX-18018539

Revision and date R02 18-Dec-2020

Disclosure Restriction C1-Public

This document applies to the following products

Product name Type number Firmware version PCN reference

EVK-ANNA-B112U EVK-ANNA-B112U-00 All EVK-ANNA-B112C EVK-ANNA-B112C-00 All -

1

:

1

There is no separate EVK variant for the ANNA-B112-70B module variant. To simulate this module please erase the flash of the EVK.

express written permission of u-blox.

-blox assumes no liability for its use. No warranty, either express or

to, with respect to the accuracy, correctness, reliability and fitness for a particular

-blox at any time without notice. For the most recent

UBX-18018539 - R02 Document Information Page 2 of 31 C1-Public

-blox AG.

-blox.com.

EVK-ANNA-B112 - User guide

1 Product description

1.1 Overview

The u-blox EVK-ANNA-B112 evaluation kit is a versatile development platform that allows quick prototyping of a variety of extremely low-power Internet of Things (IoT) applications, using Bluetooth 5, Bluetooth mesh, and NFC.

The EVK-ANNA-B112 evaluation kit is available with two board variants that offer different antenna solutions:

• EVK-ANNA-B112U – supplied with an ANNA-B112U module, u-connectXpress software, and antenna connector for connecting to external antennas.

• EVK-ANNA-B112C – supplied with an ANNA-B112C module, u-connectXpress software, and internal, 2.4 GHz antenna (integrated in the SiP).

Through a variety of connectors, including Arduino™ Uno R3 and Raspberry Pi header connectors, the EVK-ANNA-B112 provides access to all 25 IO pins on the ANNA-B112 module.

The stand-alone ANNA-B112 module, included in the kit, is based on the Nordic Semiconductor nRF52832 chip. The nRF52832 uses an Arm and 64 kB RAM, running at a system clock of 64 MHz.

The evaluation board offers simple USB drag-n-drop programming with a SEGGER J-Link debug interface that can be used with the open CPU variants of the EVK. Nordic provide a free Software Development Kit (SDK) with a broad selection of drivers, libraries, and example applications that can be used for rapid prototyping.

®

Cortex®-M4F microcontroller with 512 kB internal flash

Figure 1: EVK-ANNA-B112 evaluation boards

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Figure 2: Left: EVB ANNA-B112U including U.FL connector; Right: EVB ANNA-B112C including an internal antenna.

Figure 3: Left: EVB ANNA-B112U including NFC antenna; Right: EVB ANNA-B112U including NFC antenna, turned 180 degrees. Both options are valid.

1.2 Kit includes

The EVK-ANNA-B112 evaluation kit includes the following:

• EVK-ANNA-B112 evaluation board

• 2 pcs 2.4 GHz external antennas with U.FL connector (only in EVK-ANNA-B112U)

• NFC antenna

• USB cable

• Quick Start card

1.3 Key features

• u-blox ANNA-B112 Bluetooth low energy module based on the Nordic nRF52832 chipset:

o Bluetooth 5 support o Bluetooth mesh o NFC tag functionality o Integrated Arm® Cortex®-M4F microcontroller with 512 kB flash, 64 kB RAM, and 64

MHz system clock

o Wide 1.7-3.6 V supply range

• The ANNA-B112 module supports different interfaces that can be configured to any of the

25 available IO pin(s):

o 8 analog capable inputs

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o 12 PWM capable outputs o 3x SPI o 1x UART with HW flow control o 2x I o 1x I

2

C

2

S

• Full UART to USB converter with a Virtual COM port that allows control of the extended UART

features of the u-blox u-connectXpress software

• On-board J-Link debugger/programmer:

o Mass Storage Device interface to PC, for drag-n-drop programming o Debug port o An additional Virtual COM port that, for example, may be connected to add-on boards

or to a debug UART on the ANNA-B112

• RGB LED and push buttons

• Arduino UNO R3 and Raspberry Pi compatible pin header interfaces

• Jumper headers and level shifters allow for flexible powering options of the ANNA-B112

module, even with full board support. They isolate the module entirely and control each power net separately in order to precisely measure low power applications or disconnect only unused parts of the board to save battery life.

• Multiple board power supply options:

o 5-12 V power plug o 5 V USB supply o 5-12 V Arduino VIN input

• Battery holder supporting CR2032 coin cell batteries

1.4 EVK-ANNA-B112 block diagram

The block diagram of EVK-ANNA-B112 is shown in Figure 4.

Figure 4: EVK-ANNA-B112 block diagram

The block diagram shows the major interfaces and internal connections of the EVK-ANNA-B112. The following sections describe in detail how the different interfaces are connected and used, and how the evaluation board may be configured to suit the needs of the user.

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1.5 Connectors

Figure 5 shows the available connectors on the EVK-ANNA-B112 and their layout. Table 1 describes the connectors and their uses in detail.

Figure 5: Available connectors and their pinout

Connector annotation

J5 Power supply 2.1 mm power jack, the center pin is the positive terminal. 5 – 12 V input.

J17 Power supply Pin header that can be used to connect external power supplies. 5 – 12 V input.

BT1 Battery holder CR2032 coin cell battery holder. CR2032 usually has a 3 V potential when fully

J11 NFC antenna

J10 2.4 GHz RF antenna

J12 Cortex Debug

J21 Cortex Debug+ETM

J8 Power supply, COM

Table 1: EVK-ANNA-B112 connector description

Function Description

charged.

Pin header that connects to the u-blox NFC antenna included in the kit.

connector

U.FL coaxial connector that can be used to connect antennas or RF equipment. This

connector

port and debug USB

connector is included only in the EVK-ANNA-B112U.

10-pin, 50 mil pitch connector that can be used to connect external debuggers to the ANNA-B112 module. The ANNA-B112 modules support Serial Wire debug (SWD) and Serial Wire Viewer, but not JTAG debug.

20-pin, 50 mil pitch connector. This extended connector has the same features as J12, but also allows for instruction trace operations via the Embedded Trace Macrocell (ETM) of the Cortex This requires a special external debugger. Note that the 50 mil pitch pin header is not soldered onto the evaluation board by default.

The main USB connector that is used to program, debug, and communicate with the ANNA-B112 module. It can also be used to power the entire board.

®

-M4F microcontroller inside the ANNA-B112 module.

1.6 Antennas

The ANNA-B112 can be used both with external and internal antenna. The EVK-ANNA-B112C uses the internal antenna of the ANNA-B112 and the EVK-ANNA-B112U has the antenna signal connected to an U.FL connector.

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The EVK-ANNA-B112U is delivered with two different types of external antennas.

• FXP75.07.0045B

• PC17.07.0070A

Both are design to be mounted on a plastic casing for best performance. For more details on the parameters of the internal and the external antennas, see the ANNA-B112 Data Sheet [1].

1.7 Powering options

Power can be supplied to the board in one of the following ways:

• Via the USB connector, J8

• Using the power jack, J5

• Using the Arduino interface VIN pin

• Using the pin header J17

• Plugging in a battery to the battery holder BT1

These power supply sources are distributed to the rest of the board as shown in Figure 6.

Figure 6: Block diagram of the power net distribution

1.7.1 Selecting the power configuration jumpers

The EVK-ANNA-B112 offers flexible powering options for the ANNA-B112 module and the board itself. To configure this, jumpers are added to or removed from pin headers, shorting two of the pins together and connecting or disconnecting different power nets on the evaluation board. Figure 7 shows the location of the power configuration jumper headers. The 3V3 net is supplied by the board and is always powered so long as any of the power sources shown in Figure 6 are connected. The 3V3 net does not provide power unless a jumper is added to jumper header J7.

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Figure 7: Jumper headers J7 and J22 are used to select power configurations

Connector annotation

J7 1 3V3 Regulated 3.3 V net. This net is supplied by the board and will always be powered

J22 1 VCC ANNA-B112 module voltage supply that connects to the module VCC pin. Shorted

Table 2: Pinout of jumper headers J7 and J22 used to configure the board power nets

Pin number

2 3V3_PI Connects to the Raspberry Pi header’s (J14) 3V3 pins. If a Raspberry Pi is

3 VBAT_DIODE To protect the battery from current back surges, connect the battery to the

4 VDD_ANNA Connects to J22 pin 3, from where it can be connected to the module supply pin or

5 VBAT Battery + terminal

6 VDD_ANNA Connects to J22 pin 3, from where it can be connected to the module supply pin or

7 3V3 Regulated 3.3 V net. This net is supplied by the board and will always be powered

8 VDD_ANNA Connects to J22 pin 3, from where it can be connected to the module supply pin or

9 3V3 Regulated 3.3 V net. This net is supplied by the board and will always be powered

10 VDD_MCU Supply net for the board functions not directly connected to the ANNA-B112

11 GND Ground net.

12 GND Ground net.

2 VCC_IO VCC_IO pin not connected.

3 VDD_ANNA Connects to J7 pins 4, 6 and 8. Short J22 pins 1 and 3 allow the EVK to power the

4 VDD_IO Supply net for LEDs and peripherals connected directly to the ANNA-B112 module.

5 GND Ground net.

6 GND Ground net.

Schematic net name

Description

as long as a power source is connected.

connected, this net must be floating to prevent back currents. If a HAT is connected, this net can be shorted to the EVK 3.3 V supply to power the HAT.

ANNA-B112 module via a protection diode using this pin.

somewhere else.

as long as a power source is connected.

somewhere else.

as long as a power source is connected.

module; Interface MCU, USB hub, UART to USB converter etc.

to the VCC_IO net via 0 Ω resistor R4 by default.

ANNA-B112 module.

Short J22 pins 2 and 4.

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The following sections describe different jumper configurations and power scenarios that is available on the board, including the default configuration.

⚠ Check the jumper positions carefully; if a jumper is connected in a wrong way, it can permanently

damage the components that are on the board or connected to it.

1.7.2 Default power, 3.3 V

This is the default power configuration for the evaluation board, and the jumpers are installed out of the box with this power configuration. All board peripherals are powered up, the ANNA module is directly supplied by the board and everything is running at 3.3 V.

Figure 8: Jumper positions for default power configuration

Connector annotation

J7 7, 8 Selects the board regulated 3.3 V net as source for the VDD_ANNA net.

J22 1, 3 Powers up the ANNA module. The ANNA VCC and VCC_IO pins are connected to the selected

Table 3: Jumper positions for default power configuration

Add jumper to pins

9, 10 Powers up the Interface MCU, USB hub, and UART to USB converter with 3.3 V.

2, 4 Powers up the peripherals directly connected to ANNA such as LEDs and external memory

Description

source for the VDD_ANNA net.

with the ANNA supply voltage.

1.7.3 Battery powered, 3 V

When using a battery, Figure 9 shows the default configuration. The battery voltage is connected to VDD_ANNA, which in turn, is connected to the ANNA-B112 VCC supply. If needed, a jumper can be added to J22 pins 2 and 4 to supply LEDs and other peripherals with power, as long as this does not exceed the maximum current rating of the battery. If the ANNA module has to be configured, the VDD_MCU net can be connected to enable PC communications by adding a jumper to J7 pins 9 and

10.

Figure 9: Jumper positions for battery powered operation, two jumpers are optional

Connector annotation

J7 5, 6 Selects the battery connected to the battery holder as source for the VDD_ANNA net.

J22 1, 3 Powers up the ANNA module. The ANNA VCC and VCC_IO pins are connected to the selected

Table 4: Jumper positions for battery powered operation, two jumpers are optional

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Add jumper to pins

9, 10 (Optional) Powers up the Interface MCU, USB hub, and UART to USB converter with 3.3 V.

2, 4 (Optional) Powers up the peripherals directly connected to ANNA such as LEDs and external

Description

source for the VDD_ANNA net.

memory with the ANNA supply voltage.

EVK-ANNA-B112 - User guide

1.7.4 Battery powered with protection diode, 2.7 V

This use case is meant to protect the battery from current back surges. When using the NFC interface, there is a risk that the applied electromagnetic field can cause back surges that will typically damage a non-chargeable battery. To prevent this damage, a schottky diode can be added in series to the battery, which will block any back current surges. A jumper should then be added to J7 pins - 3 and 4 instead of 5 and 6.

The diode will lower the voltage level of the battery by about 0.3 V.

Figure 10: Jumper positions for battery powered operation with a protection diode, two jumpers are optional

Connector annotation

J7 3, 4 Selects the diode protected battery as a source for the VDD_ANNA net.

J22 1, 3 Powers up the ANNA module. The ANNA VCC and VCC_IO pins are connected to the selected

Table 5: Jumper positions for battery powered operation with a protection diode, two jumpers are optional

Add jumper to pins

9, 10 (Optional) Powers up the Interface MCU, USB hub, and UART to USB converter with 3.3 V.

2, 4 (Optional) Powers up the peripherals directly connected to ANNA such as LEDs and external

Description

source for the VDD_ANNA net.

memory with the ANNA supply voltage.

1.7.5 External supply

When measuring current consumption or performing other ANNA-B112 module characterization measurements, it can be useful to power the module with an external source such as a DC power analyzer. In such a case, all jumpers can be removed and the required supply nets can be fed externally by connecting to the pin headers. For example, the ANNA-B112 module can be powered by connecting an external supply directly to the J22 pin 1 and GND.

☞ Take care that unpowered parts of the board are properly isolated. If a voltage is applied to the

signal of an unpowered device, current might leak through various protection circuits of the device. This might give false readings when measuring current consumption etc.

Figure 11 below shows a few optional jumper connections that can be helpful when supplying the module with an external supply.

Figure 11: Optional jumper positions while using an external power supply

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Connector annotation

J7 7, 8 (Optional) Selects the board regulated 3.3 V net as a source for the VDD_ANNA net.

J22 3, 4 (Optional) Powers up the peripherals directly connected to ANNA such as LEDs and external

Table 6: Optional jumper positions while using an external supply

Add jumper to pins

9, 10 (Optional) Powers up the interface MCU, USB hub, and UART to USB converter with 3.3 V.

Description

memory with the selected source for the VDD_ANNA net.

1.7.6 Raspberry Pi HAT

When connecting a HAT to the Raspberry Pi interface, the following jumper configuration can be used. Depending on how the ANNA module should communicate with a test PC over USB or with the HAT, the VDD_MCU net can be left unpowered.

⚠ The 3V3_PI supply net must only be powered when connecting to a Raspberry Pi expansion board

(HAT). If connecting to a Raspberry Pi board, the jumper must be disconnected.

Figure 12: Jumper configuration when connected to a Raspberry Pi HAT

Connector annotation

J7 1,2 Connects the 3V3_PI net to the regulated 3.3 V supply.

J22 1, 3 Powers up the ANNA module. The ANNA VCC and VCC_IO pins are connected to the selected

Table 7: Jumper configuration when connected to a Raspberry Pi HAT

Add jumper to pins

7, 8 Selects the board regulated 3.3 V net as a source for the VDD_ANNA net.

9, 10 (Optional) Powers up the Interface MCU, USB hub, and UART to USB converter with 3.3 V.

2, 4 (Optional) Powers up the peripherals directly connected to ANNA such as LEDs and external

Description

source for the VDD_ANNA net.

memory with the ANNA supply voltage.

1.8 Arduino interface

The EVK-ANNA-B112 includes a set of pin headers and mounting holes that are compatible with certain Arduino or Arduino inspired shields. Figure 13 shows the layout of the Arduino interface and Table 8 explains the pinout in more detail. Section 1.8.1 describes what specifications must be met for a shield to be compatible for use with the EVK-ANNA-B112.

☞ The silk screen text on EVB marked UBXH60-0000474 J3 pin 6 shall be IO_31.

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Figure 13: Pin headers that are compatible with some Arduino shields

UART_DTR/

EVK-ANNA-B112 - User guide

Conn. Pin

J1 1 N/C Not Connected - - Not connected

J2 1 A0 Analog input IO_24 P0.04 Analog function capable IO

J3 1 D0/RX Digital I/O, UART RX UART_RXD P0.02 UART_RXD signal on ANNA-B1

Arduino

No.

2 IOREF I/O reference voltage level.

3 RESET Reset signal input. Active low logic RESET_N P0.21

4 3.3V 3.3 V DC regulated supply output 3V3 -

5 5V 5 V regulated supply output 5V - Cannot be used as supply input, use

6 GND Ground GND GND

7 GND Ground GND GND

8 VIN External DC supply input, 5 – 12 VDC VIN -

2 A1 Analog input IO_23 P0.05 Analog function capable IO

3 A2 Analog input IO_28 P0.28 Analog function capable IO

4 A3 Analog input IO_27 P0.29 Analog function capable IO

5 A4 Analog input UART_DSR/

6 A5 Analog input

2 D1/TX Digital I/O, UART TX UART_TXD P0.03 UART_TXD signal on ANNA-B1

3 D2 Digital I/O UART_CTS P0.19 UART_CTS signal on ANNA-B1

4 D3 Digital I/O UART_RTS P0.11 UART_RTS signal on ANNA-B1

5 D4 Digital I/O IO_29 P0.27 RED

6 D5 Digital I/O IO_31 P0.26 BLUE

7 D6 Digital I/O IO_22 P0.10 Signal not connected by defualt,

8 D7 Digital I/O IO_21 P0.09 Signal not connected by defualt,

Description Schematic

net name

VDD_IO - See section 1.6

Selectable by user to 1.7 – 3.6 V

IO_26

IO_25

nRF52 pin

P0.30 Analog function capable IO,

P0.31 Analog function capable IO,

u-blox connectivity and alternate functions with notes

VIN instead. Only supplied by USB VBUS.

UART_DSR signal on ANNA-B1

UART_DTR signal on ANNA-B1

configured for NFC use

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Conn. Pin

J4 1 D8 Digital I/O IO_13 P0.14

Table 8: Pinout of the Arduino UNO R3 compatible interface

Arduino

No.

2 D9 Digital I/O IO_38 P0.24 SWITCH_2 on ANNA-B1.

3 D10 Digital I/O IO_36 P0.22

4 D11 Digital I/O IO_37 P0.23

5 D12 Digital I/O IO_16 P0.18

6 D13 Digital I/O IO_45 P0.20

7 GND Ground GND

8 AREF Analog reference voltage level - - Not connected

9 SDA I2C data signal IO_14 P0.15

10 SCL I2C clock signal IO_15 P0.16

Description Schematic

net name

nRF52 pin

u-blox connectivity and alternate functions with notes

This signal is pulled low when the button SW2 is pressed

1.8.1 Arduino shield compatibility

The EVK-ANNA-B112 has an I/O voltage range of 1.7-3.6 V. It can therefore be used only with shields that also support an I/O voltage within this range.

The EVK-ANNA-B112 has a pinout that is compatible with some Arduino or Arduino inspired shields. This section describes the features of the EVK pins that a shield must comply with:

• IOREF: The I/O voltage level of the ANNA-B112 module is 3.3 V by default, but the EVK can

be modified to allow other voltages (1.7-3.6 V).

• RESET: Is connected to the RESET button (SW0).

• 3.3 V: A regulated 3.3 V output. Should not be used as a voltage supply input, use the VIN pin

instead.

• 5 V: Is only a 5 V supply output if the EVK is being powered by USB. If any other power

configuration is used, this pin will be unconnected (floating). It is safe to connect an external 5 V supply to this pin even when a USB cable is connected. This pin cannot be used to power the board, use the VIN pin instead.

• VIN: May be used as a 5 -12 V supply input to power the EVK-ANNA-B112.

• Pin 0 (RX): Is connected to the ANNA-B112 UART RX pin (ANNA pin 23).

• Pin 1 (TX): Is connected to the ANNA-B112 UART TX pin (ANNA pin 22).

Note on SCL/SDA: On some Arduino boards, the I

2

C signals, SCL, and SDA are connected to the pins A4 and A5 and to the SCL and SDA pins in the top right-hand corner. Since these pins will be shorted together it might cause problems when connected to the EVK-ANNA-B112, which has not shorted these pins together.

Note on digital I/O pins: Some of the digital I/O pins can be connected to the on-board debug MCU, thus allowing serial communication and flashing/debugging over USB. This can cause interference on the signals that are also used by an Arduino shield. See section 1.11 on how to disconnect these signals from the debug MCU.

1.9 Raspberry Pi compatible interface

The EVK-ANNA-B112 includes a 40-pin IO header that can be used to interface with either a Raspberry Pi computer board or with a Raspberry Pi expansion board (HAT). The EVK-ANNA-B112 uses different hardware and software configurations depending on if it is connected to a Pi or a HAT; the differences are covered in this section. The default configuration is to connect to a Pi.

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Not all the Raspberry Pi versions and HATs are supported, since it requires the 40-pin IO header, which older versions did not have. Table 9 lists the compatible Raspberry Pi versions.

Compatible Raspberry Pi boards

Raspberry Pi 1 Model A+

Raspberry Pi 1 Model B+

Raspberry Pi 2 Model B

Raspberry Pi 3 Model B

Raspberry Pi Zero

Raspberry Pi Zero W

Table 9: Compatible Raspberry Pi boards

Figure 14: Pin header J14 that is compatible with the Raspberry Pi IO connectors

Figure 14 shows the layout of the Raspberry Pi interface and Table 10 explains the pinout in detail. There are three mounting holes that can be used for increased mechanical stability. The two on either side of connector J14 are common to all Raspberry Pi boards, but the third one is only compatible with the Pi Zero boards.

Conn. Pin

J14 1 3.3 V 3.3 V supply pin 3V3_PI - Not connected by default, see section 1.6

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Raspberry

No.

Pi pin

2 5 V 5 V supply pin 5V - Cannot be used as supply input. Supplied

3 IO02 Digital I/O IO_14 P0.15

4 5 V 5 V supply pin 5V - Cannot be used as supply input. Supplied

5 IO03 Digital I/O IO_15 P0.16

Description Schematic

net name

nRF52 pin

Alternate functions and notes

by USB VBUS and protected from back powering.

EVK-ANNA-B112 - User guide

Conn. Pin

Table 10: Pinout of the Raspberry Pi compatible interface

Raspberry

No.

Pi pin

6 GND Ground GND GND

7 IO04 Digital I/O N/C

8 IO14 Digital I/O, UART TX/RX RASP_TXD P0.02 Connected to ANNA UART_RXD pin by

9 GND Ground GND GND

10 IO15 Digital I/O, UART RX/TX RASP_RXD P0.03 Connected to ANNA UART_TXD pin by

11 IO17 Digital I/O N/C

12 IO18 Digital I/O RESET_N P0.21

13 IO27 Digital I/O IO_13 P0.14

14 GND Ground GND GND

15 IO22 Digital I/O IO_17 Can be connected to IO_17 via zero

16 IO23 Digital I/O IO_16 P0.18

17 3.3 V 3.3 V supply pin 3V3_PI - Not connected by default, see section 1.6

18 IO24 Digital I/O IO_18

19 IO10 Digital I/O IO_25 P0.31

20 GND Ground GND GND

21 IO09 Digital I/O IO_21 P0.09 Can be connected to IO_21 via zero Ω

22 IO25 Digital I/O IO_22 P0.10 Can be connected to IO_22 via zero Ω

23 IO11 Digital I/O IO_23 P0.05

24 IO08 Digital I/O IO_24 P0.04

25 GND Ground GND GND

26 IO07 Digital I/O IO_26 P0.30

27 ID_SD EEPROM config I2C data

28 ID_SC EEPROM config I2C clock

29 IO05 Digital I/O IO_29 P0.27

30 GND Ground GND GND

31 IO06 Digital I/O IO_31 P0.26

32 IO12 Digital I/O IO_30 P0.25

33 IO13 Digital I/O UART_RTS P0.11

34 GND Ground GND GND

35 IO19 Digital I/O UART_CTS P0.19

36 IO16 Digital I/O IO_36 P0.22

37 IO26 Digital I/O IO_37 P0.23

38 IO20 Digital I/O IO_38 P0.24

39 GND Ground GND GND

40 IO21 Digital I/O IO_45 P0.20

Description Schematic

signal

nRF52

net name

IO_27 P0.29 Should only be used to read or simulate

IO_28 P0.28 Should only be used to read or simulate

Alternate functions and notes

default, see section 1.9.2

Ωresistor. Resistor not mounted by default. IO_17 is connected to 32.768 LPO crystal by default

resistor. Resistor not mounted by default. IO_21 is connected to NFC antenna by default

resistor. Resistor not mounted by default. IO_22 is connected to NFC antenna by default

HAT EEPROMs, see section 1.9.3

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1.9.1 Powering considerations

There are two voltage nets used in the Raspberry Pi interface 3V3_PI and 5V. Both the 3V3_PI and 5V nets can be used to power HATs, but these should not be used when connecting to a Raspberry

Pi. See section 1.7.6 for more information.

⚠ The 3V3_PI power net must not be connected to the 3.3 V supply when connected to a Raspberry

Pi board. Connecting the power net in this way could damage both boards.

1.9.2 UART

The Raspberry Pi interface provides two pins - IO14 and IO15, which can be used for UART communications. In UART communications, signals are always connected RX <-> TX and vice versa. This means that on a Raspberry Pi board IO14 will be TX and on a HAT it will be RX. To support talking to both HATs and Pi boards, the zero Ω resistors - R57, R58, R59 and R60 can be used to toggle the ANNA TX and RX pins between IO14 and IO15. If an ANNA-B112 is used, this switch can also be made in the software. By default, the EVK-ANNA-B112 will be configured to simulate a HAT, and IO14 is connected to the ANNA UART_RXD pin and IO15 is connected to the ANNA UART_TXD pin respectively.

1.9.3 EEPROM support

The Raspberry Pi interface supports a unique EEPROM solution to store the HAT specific IO configurations on the HAT board, to be read by the Raspberry Pi before configuring its IOs. The two pins used for this are ID_SD and ID_SC and are connected to the ANNA-B112 module. The ANNA-B112 module can thus either read the IO configuration from a HAT, or simulate an EEPROM and send configurations to a connected Pi. This requires an ANNA-B112 module and a custom built application.

It is not mandatory to use this EEPROM solution; if not used, the two ANNA pins - IO_42 and IO_41 can be without configurations.

Two pull-up resistors - R44 and R50, can be added to the I on the evaluation board by default.

Visit https://github.com/raspberrypi/hats/blob/master/designguide.md for more information on the ID EEPROM specification.

2

C lines if needed. They are not mounted

UBX-18018539 - R02 Product description Page 17 of 31 C1-Public

1.10 Buttons and LEDs

Figure 15: Position of the push-buttons and LEDs on the evaluation board

EVK-ANNA-B112 - User guide

Annotation Function Description

SW0 Reset button Connected directly to the ANNA RESET_N pin.

SW1 User button Push button for application use. Connected directly to the ANNA SWITCH_1

(IO_30) pin

SW2 User button Push button for application use. Connected directly to the ANNA SWITCH_2

(IO_38) pin

Table 11: EVK-ANNA-B112 buttons

Annotation Function Description Color

DS1 UART CTS LED Connected to the ANNA UART_CTS (IO_35) pin via jumper header J9

DS2 UART RTS LED Connected to the ANNA UART_RTS (IO_34) pin via jumper header J9

DS3 Interface MCU LED Blinks on USB enumeration and activity, lit when the Interface MCU is

connected via USB

DS4 Interface MCU LED Error LED

DS5 UART DTR LED Connected to the ANNA UART_DTR (IO_25) pin via jumper header J9

DS6 UART DSR LED Connected to the ANNA UART_DSR (IO_26) pin via jumper header J9

DS7 UART RXD LED Connected to the ANNA UART_RXD (IO_20 pin via jumper header J9

DS8 UART TXD LED Connected to the ANNA UART_TXD (IO_19) pin via jumper header J9

DS9 RGB LED Connected to the ANNA RED (IO_29), GREEN (IO_30) and BLUE (IO_31)

pins via jumper header J19. Used as status indication for u-connectXpress software. For further information, see also the RGB system status signals section in the ANNAB112 data sheet [1].

Table 12: EVK-ANNA-B112 LED indicators

1.11 Disconnecting ANNA signals from board peripherals

All evaluation board peripherals, such as level shifters, LEDs, and the interface MCU will be connected to the ANNA-B112 module by default. This might not suit all evaluation scenarios. All peripherals can be switched off by disconnecting their power supplies (see section 1.6), but if only specific signals have to be isolated, it will require finer control.

UBX-18018539 - R02 Product description Page 18 of 31 C1-Public

EVK-ANNA-B112 - User guide

All the ANNA module signals that are connected to board peripherals have thus been routed via jumper headers, so that jumpers can be pulled or added as needed by the evaluation board user, isolating, or connecting specific signals. Figure 16 shows the layout of these jumper headers.

Figure 16: Jumper headers J19 and J9 that are used to isolate specific ANNA signals

Connector annotation

J19 1 RESET_N Reset signal, active low

J9 1 IO_25/

Pin number Schematic net

name

2 RESET_N_I Connects to the Interface MCU’s reset line

3 SWDIO SWD data signal

4 SWDIO_I Interface MCU SWD data signal, used to program/debug the ANNA

5 SWDCLK SWD clock signal

6 SWDCLK_I Interface MCU SWD data signal, used to program/debug the ANNA

7 IO_31 ANNA-B112: BLUE signal

8 BLUE RGB diode blue signal, active low

9 IO30/

SWITCH_1

10 GREEN RGB diode green signal, active low

11 IO_29 ANNA-B112: RED signal

12 RED RGB diode red signal, active low

UART_DTR

2 UART_DTR_I UART to USB DTR signal

3 IO_26/

UART_DSR

4 UART_DSR_I UART to USB DSR signal

5 IO_34/

UART_RTS

6 UART_RTS_I UART to USB RTS signal

7 IO_35/

UART_CTS

8 UART_CTS_I UART to USB CTS signal

Description

module

ANNA-B112: SWITCH_1 and GREEN signal

ANNA-B112: UART DTR output

ANNA-B112: UART DSR input

ANNA-B112: UART RTS output

ANNA-B112: UART CTS input

UBX-18018539 - R02 Product description Page 19 of 31 C1-Public

EVK-ANNA-B112 - User guide

Connector annotation

Table 13: Pinout of jumper headers - J19 and J9

Pin number Schematic net

name

9 IO_19/

UART_TXD

10 UART_TXD_I UART to USB TXD signal

11 IO_20/

UART_RXD

12 UART_RXD_I UART to USB RXD signal

Description

ANNA-B112: UART TXD output

ANNA-B112: UART RXD input

1.12 Software debug options

You can debug the software using the following two options in EVK-ANNA-B112:

• Onboard debug solution available on the USB connector

• An external debugger connected to J12 connector

An external debugger connected to the J12 connector is useful when powering the evaluation board with the CR2032 coin cell battery, or through the external power supply connector J5. It could also be useful in a scenario where the debug MCU interface has been disconnected from the ANNA-B112 module using the jumpers on J9 header. The SEGGER J-Link software [4] is required to debug using the onboard J-Link hardware on the EVK-ANNA-B112.

UBX-18018539 - R02 Product description Page 20 of 31 C1-Public

EVK-ANNA-B112 - User guide

2 Setting up the evaluation board

2.1 Evaluation board setup

The EVK-ANNA-B112 is delivered with u-blox u-connectXpress software pre-flashed to the module.

Before connecting the module, download and install the latest s-center evaluation software from the u-blox website.

To use Bluetooth Low Energy on the EVK-ANNA-B112, connect a 2.4 GHz antenna to the U.FL antenna connector (J10). The EVK-ANNA-B112C has an onboard antenna.

Plug in either an external power supply in J5 connector or connect to a USB host with a USB cable attached to J8 connector. You can also power the evaluation board with a CR2032 coin cell battery. The status light (DS6) turns green when power is applied to the board. The NFC antenna can be connected to the J11 connector. The connector pinning is symmetrical, so the antenna can be positioned either up or down in relation to the evaluation board.

⚠ Be careful to check polarity before connecting an external power supply to the EVK-ANNA-B112

evaluation board. Center conductor is positive (+) and the ring is negative (-).

The very first time you connect the unit to a new computer, drivers need to be installed. The operating system should handle this automatically.

⚠ If the drivers are not installed automatically, download the nRF Connect application from

www.nordicsemi.com that includes the Jlink CDC UART driver.

Windows automatically assigns a COM to the unit by. Perform the following actions to view the assigned COM ports on Windows 7:

1. Open the Control Panel and click Hardware and Sound.

2. Click Device Manager in Devices and Printers. This opens Device Manager window where you can

view the assigned COM ports.

2.2 Starting up

2.2.1 EVK-ANNA-B112

Perform the following steps to enable communication with the module:

1. Start the s-center evaluation software.

2. Use the default baud rate 115200, 8N1 with flow control. You should now be able to

communicate with the module using AT commands.

For a list of available AT commands, see the u-blox u-connect AT commands manual [3]. To get started with a basic use case setup of the EVK-ANNA-B112 with u-blox u-connectXpress software, see the u-connectXpress user guide [5].

2.2.2 Getting the latest u-connectXpress software

Go to the u-blox support webpage to get the latest firmware. Instructions for flashing the EVKANNA-B112 can be found in the Software section of the ANNA-B112 system integration manual [2].

UBX-18018539 - R02 Setting up the evaluation board Page 21 of 31 C1-Public

EVK-ANNA-B112 - User guide

2.2.3 Open CPU

To use the EVK-ANNA-B112 together with the Nordic Semiconductor SDK, refer to the software section of the ANNA-B112 system integration manual [2] that describes how to:

• Create your own board file

• Adapt the examples in the Nordic Semiconductor SDK to use this board file

See also the u-blox short range open CPU github repository [6].

UBX-18018539 - R02 Setting up the evaluation board Page 22 of 31 C1-Public

Appendix

Bottom view

A Placement and schematics

EVK-ANNA-B112 - User guide

Top view

UBX-18018539 - R02 Appendix Page 23 of 31 C1-Public

12345678

(TRACE _CLK)

(TRACE _D0) (TRACE _D1) (TRACE _D2) (TRACE _D3)

E

IO_18

BI

IO_17

BI

5%

22P22P

R61R64

DNI

D

32.768KHZ

5%

22P

C

BI BI

DNI

0R

(TRACE _CLK)

(TRACE _D0) (TRACE _D1) (TRACE _D2) (TRACE _D3)

IO_18 IO_17

0R

5%

C54

R63

R62

DNI

0R

X3 X5X4

B

0R

32.768KHZ

(TRACE _CLK)

(TRAC E_D0)

5%

(TRAC E_D1) (TRAC E_D2)

22P

(TRAC E_D3)

IO_18

BI

IO_17

BI

5%

22P

C56

A A

32.768KHZ

5%

22P

C57 C18C52C55

R66 R65

DNI0RDNI

0R

IO_45

BI

IO_16

BI

IO_15

BI

IO_14

BI

IO_13

BI

SWDCLK

BI

SWDIO

BI

RESET_ MODULE_N

BI

IO_37

BI

IO_36

BI

IO_29

BI

IO_30

BI

IO_31

BI

IO_38

BI

IO_28

BI

IO_27

BI

IO_24

BI

IO_23

BI

IO_26

BI

IO_25

BI

UART_R XD

BI

UART_T XD

BI

UART_C TS

BI

UART_R TS

BI

32.768 KHZ_XL1_CO NNECTOR

32.768 KHZ_XL2_CO NNECTOR

IO_45

BI

IO_16

BI

IO_15

BI

IO_14

BI

IO_13

BI

SWDCLK

BI

SWDIO

BI

RESET_ MODULE_N

BI

IO_37

BI

IO_36

BI

IO_29

BI

IO_30

BI

IO_31

BI

IO_38

BI

IO_28

BI

IO_27

BI

IO_24

BI

IO_23

BI

IO_26

BI

IO_25

BI

UART_R XD

BI

UART_T XD

BI

UART_C TS

BI

UART_R TS

BI

32.768 KHZ_XL1_CO RNER

32.768 KHZ_XL2_CO RNER IO_45

BI

IO_16

BI

IO_15

BI

IO_14

BI

IO_13

BI

SWDCLK

BI

SWDIO

BI

RESET_ MODULE_N

BI

IO_37

BI

IO_36

BI

IO_29

BI

IO_30

BI

IO_31

BI

IO_38

BI

IO_28

BI

IO_27

BI

IO_24

BI

IO_23

BI

IO_26

BI

IO_25

BI

UART_R XD

BI

UART_T XD

BI

UART_C TS

BI

UART_R TS

BI

32.768 KHZ_XL1_ED GE

32.768 KHZ_XL2_ED GE

131614

12

M3

37 1

IO_37 ANT_PCB

36

IO_36

IO_29

IO_30

IO_38

IO_28

IO_27

IO_24

IO_23

IO_26

IO_25

UART_RXD

UART_TXD

UART_CTS

UART_RTS

RESET_N

29 30

38

28 27 24 23 26 25 20 19 35 34

17

12

M1

37

IO_37 ANT_PCB

36

IO_36

IO_29

IO_30

IO_38

IO_28

IO_27

IO_24

IO_23

IO_26

IO_25

UART_RXD

UART_TXD

UART_CTS

UART_RTS

RESET_N

29 30

38

28 27 24 23 26 25 20 19 35 34

17

12

M2

37 1

IO_37 ANT_PCB

36

IO_36

IO_29

IO_30

IO_38

IO_28

IO_27

IO_24

IO_23

IO_26

IO_25

UART_RXD

UART_TXD

UART_CTS

UART_RTS

RESET_N

29 30

38

28 27 24 23 26 25 20 19 35 34

17

15

40

39

SWD_IO

ANNA W ITH COAX C ONNECTOR

XL_1

XL_2

18

40

39

SWD_IO

ANNA I N A CORNER

XL_1

XL_2

18

40

39

SWD_IO

XL_1

XL_2

18

45

IO_15

IO_45

IO_13

IO_16

IO_14

SWD_CLK

ublox_anna_b1

GND_47

GND_44

GND_50

GND_48

GND_46

47

44

504846

13

16

14

15

45

IO_13

IO_16

IO_14

IO_15

IO_45

SWD_CLK

ublox_anna_b1

GND_47

GND_44

GND_50

GND_48

GND_46

504846

47

44

131614

15

45

IO_13

IO_16

IO_14

IO_15

IO_45

SWD_CLK

ANNA I N A EDGE

ublox_anna_b1

GND_47

GND_44

GND_50

GND_48

GND_46

47

44

504846

22

21

NFC_2

NFC_1

GND_42

GND_41

GND_33

GND_43

424133

43

22

21

NFC_2

NFC_1

GND_42

GND_41

GND_33

GND_43

424133

43

22

21

NFC_2

NFC_1

GND_42

GND_41

GND_33

GND_43

424133

43

ANT_GND_1

ANT_GND_2

GND_10IO_31

ANT_INT

GND_11

GND_49

GND_51

GND_52

GND_32

32

ANT_GND_1

ANT_GND_2

GND_10IO_31

ANT_INT

GND_11

GND_49

GND_51

GND_52

GND_32

32

ANT_GND_1

ANT_GND_2

GND_10IO_31

ANT_INT

GND_11

GND_49

GND_51

GND_52

GND_32

32

GND_4

GND_7

GND_8

GND_4

GND_7

GND_8

GND_4

GND_7

GND_8

ANT

VCC

ANT

VCC

ANT

VCC

NFC_2_ CONNECTOR NFC_1_ CONNECTOR

2 3 4

1031

5

11

6

ANT_EX T

VCC

9 7 8 49 51 52

100N

NFC_2_ CORNER NFC_1_ CORNER

1

ANT_HO ST_CORNER

2 3 4

1031

5

ANT_IN T_CORNER

11

6

VCC

9 7 8 49 51 52

100N

NFC_2_ EDGE NFC_1_ EDGE

2 3 4

1031

5

ANT_IN T_EDGE

11

6

VCC

9 7 8 49 51 52

C8 C17 C13

100N

JUMPER HEADERS USE D TO CONNECT GPIOS TO VAR IOUS BOARD FUNCTION S ALL POSISTION S MOUNTED BY DEF AULT

VDD_IO

0R

DNI

10%

C47

100N

J10

1

NFC_2_ CONNECTOR

NFC_2_ CORNER

NFC_2_ EDGE

NFC_1_ CONNECTOR

NFC_1_ CORNER

NFC_1_ EDGE

CURRENT MEASURE MENT

VDD_AN NA

R26

R23

R27

C24

0R

330 P

10%

0R

NFC_2

0R

DNI

R24

0R

330 P

R35

R36

10%

0R

NFC_1

C25

330 P

10%

VCC

DNI

R6

NFC ANTENNA CONNECTOR

R22

0R

DNI

4

3

2

1

R18

0R

DNI

POSSIBILI TY TO SEPARATE RESET

R4

0R

J22

1

21

43

5 6

65

IO_22

BI

J11C51

IO_21

BI

VCC_IO

2 43

VDD_IO

SWDIO_ I SWDCLK _I IO_16 RESET_ N_I

UART_D TR_I UART_D SR_I UART_R TS_I UART_C TS_I UART_T XD_I UART_R XD_I

R43

VCC

R67

RESET_ MODULE_N

10K

DNI

R68

0R

RESET_ N

10%

C19

100N

PRODUCT VARIANTS

BOM_ANT_C ORNER:ANNA-B1WITH INTERNAL ANTENNA MOUNTED IN A COR NER

TWO ANNA-B1 PLACEME NT OPTIONS FOR INT ERNAL ANTENNA

(ONLY ONE OPTION SETUP IS MOUNTED) BOM_ANT_E DGE:ANNA-B1WITH INTERNAL ANTENNA MOUNTED ON A EDG E SIDE BOM_ANT_C ONNECTOR:ANNA-B1WITH A COAX CONNECTOR

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RESET_ N SWDIO SWDCLK IO_31 IO_30 IO_29

IO_25 IO_26 UART_R TS UART_C TS UART_T XD UART_R XD

VDD_MC U

ti_txs0104epwr

8 2 13 3 4 5

1

14

10%

C48

100N

TXS0108

10

OE

1

A1

3

A2 B2

4

A3

5

A4

6

A5

7

A6

8 13

A7

9

A8

2

VCCA

19

VCCB GND

10%

C20

100N

OE

A1 B1

A2

A3

A4

VCCA

VCCB

U4

J19

1

2

3

4

5

6

7

8

9 10

9

10

11

12

11

J9

1

2

3

4

5

6

7

8

9

10

11

12

11

U9

SWDIO_ LVL

12

SWDCLK _LVL

B2

11

SWO_LV L

B3

10

RESET_ N_LVL

B4

TO INTERFACE MCU

20

UART_D TR_LVL

B1

18

UART_D SR_LVL

17

UART_R TS_LVL

B3

16

UART_C TS_LVL

B4

15

UART_T XD_LVL

B5

14

UART_R XD_LVL

B6

B7

12

B8

TO FTDI CHI P

11

LEVEL SHIFTERS

VERSION :PROJECT :

PCB_VER.:

ICM:

2

RESET_ N_I

4

SWDIO_ I

6

SWDCLK _I

8

BLUE GREEN

12

RED

2

UART_D TR_I

4

UART_D SR_I

6

UART_R TS_I

8

UART_C TS_I

109

UART_T XD_I

12

UART_R XD_I

02

B

BI

1

E

D

C

B

12345678

E

D

E

D

THIS PAGE IS INTENTIONALLY LEFT BLANK DUE TO LICENSE AGREEMENTS

C

B

A A

DESIGN BY :

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VERSION :PROJECT :

PCB_VER.:

ICM:

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B

1

B

12345678

E

VDD_MC UVDD_MC U VDD_MC UVDD_MC U

VBUS_M CU

R25

D

USB_HU B_DM

BI

USB_HU B_DP

C

C14

8P2

+/-0.5 P

R51

100K

X2

24.000MHZ

30PPM

+/-0.5 P

HUB_DE TECT

R52

100K 100N

XTAL1 XTAL2

C15

8P2

C53

U2

19

USBDM_UP OCS2_N

20

USBDP_UP

21

XTALOUT

XTALIN

PLLFILT

24

RBIAS

R53

12K

1%

VDD_MC U

C16

100N

B

10K

14

15

181716113

SMBCLK

RESET_N

SUSP_IND

VBUS_DET

microchip_usb2422

USBDP_DN2

USBDM_DN2

USBDP_DN1

USBDM_DN1

VDD33_1 VDD33_18

3

245

39R

NON_RE M0 NON_RE M1

SMBDATANC

PRTPWR2

PRTPWR1

6

R2

5%

R3

CFG_SE L

CRFILT

VDD33_9

OCS1_N

DHSD_P

DHSD_N

DFSD_P

DFSD_N

R55

100K

R54

100K

12 11 10 922 823 7

1U

BI

BOOT STRAPPING CONFIG

R56

100K

USB_FT DI_DM USB_FT DI_DP

VDD_MC U

4U7

C23C45C22C21

100N

10

9 8

11

C46

100N

U8

3V3OUT

USBDM

USBDP

RESET_N

12

VCC

ftdi_ft231x

GND_3

GND_13

3

13

20

17

TXD

RXD

VCCIO

RTS_N

CTS_N

DTR_N

DSR_N

DCD_N

RI_N

CBUS0

CBUS1

CBUS2

CBUS3

GND_21

UART_R XD_LVL

1

UART_T XD_LVL

19

UART_C TS_LVL

6

UART_R TS_LVL

18

UART_D SR_LVL

4

UART_D TR_LVL

5 2

15

CBUS0

14

CBUS1

7

CBUS2

16

CBUS3

BI

TP4

TP6

TP7

TP5

21

D

C

B

A A

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EVB-ANNA-B1

PAGE 3 OF 6

VERSION :PROJECT :

PCB_VER.:

ICM:

02

B

1

12345678

3V3

5V

J1

1

2

3

RESET_ N

3

4

E

5

6

7

8

VDD_IO

BI

VIN

J4

10

9 8 7 6 5 4 3 2

1

IO_15

10

IO_14

9 8 7

IO_45

6

IO_16

5

IO_37

4

IO_36

3

IO_38

2

IO_13

1

BI

I2C_SCL I2C_SDA

TRACE_CLK

TRACE_D0

TRACE_D3

TRACE_D1 TRACE_D2

BOOT JUMPER

J18

2

1

IO_30

DNI

RESET_ N

BI

TP24

1

3

C9

100N

SW0

RESET

2

4

IO_38

BI

VDD_MC U

TP26

C11

DNI

100N

SW2

1

3

2

4

E

SWITCH 2

J2

1

IO_24

1

2

IO_23

2

3

IO_28

3

4

IO_27

4

5

IO_26

5

6

IO_25

6

D

VDD_IO

J12

21

1

3

5 6

5

7 8

7

9

SWDIO

2

4

SWDCLK

4

IO_16

6

8

10

RESET_ N

109

BI

UART_D SR

BI

UART_D TR

ARDUINO INTERFA CE

BI

(SWO)

BI

VDD_IO

CORTEX DEBUG

C

CORTEX DEBUG + ETM

DEBUG CONNECT ORS RASPBERRY PI INT ERFACE

VDD_IO

B

GREEN

BI

wurth_150141m173100

1

1 7

3 5

RED

6

BLUE

VCC=VD D_IO;GND=G ND

DS9

A

74LVC3G07

1

2

B

3

R

4

G

2K7

U3

5%

2

J3

8 7 6 5 4 3 2

1

IO_21

8

IO_22

7

IO_31

6

IO_29

5

UART_R TS

4

UART_C TS

3

UART_T XD

2

UART_R XD

1

BI

NFC_1

BI

NFC_2 BLUE

BI

RED

BI

IO_30

BI

1

3

C10

DNI

100N

SWITCH 1

2

4

BI

IMCU_B OOT

SWITCHES

IO_14 IO_15 IO_27 IO_28

3V3_PI

IO_14

BI

IO_15

11

IO_13 IO_17

BI

IO_25

BI

IO_21 IO_23

BI

IO_27

BI

IO_29 IO_31

BI

UART_R TS UART_C TS

BI

IO_37

13 15 17 19 21 23 25 27 29 31 33 35 37 39

VDD_IO

J21

1

5 7 9

11

13 15 17 19

2

1

3

5

7

9

11

13

15

DNI

SWDIO

2

43

SWDCLK

4

6

IO_16

6

8

10

RESET_ N

10

12

IO_45

12

14

IO_16

14

16

IO_15

16

18

IO_14

181917

20

IO_13

20

BI

(SWO)

(TRACE_CLK)

BI

(TRACE_D0)

(TRACE_D1)

BI

(TRACE_D2) (TRACE_D3)

BI

3K9

R69

DNI

3K9

R70

R44

DNI

3K9

R50

DNI

I2C PULL UP S

R57

UART_T XD

BI

UART_R XD

BI

RASP_T XD

DNI

R58

RASP_R XD

0R

R59

RASP_T XD

0R

R60

RASP_R XD

DNI

RX/TX SELECTION

LEDS

R21R20R19

1K01K0 5%

UART_C TS_I

BI

UART_R TS_I

BI

UART_D TR_I

BI BI

74LVC3G07 74LVC3G07

1

3

1

6

1

VCC=VD D_IO;GND=G ND

7

5

2

DTR_LE D

VDD_IO

AC

DS1

GREEN

1K0

A

DS2

ORANGE

C

AC

DS5

ORANGE

1K0 1K0

BI

UART_R XD_ICTS_LE D

UART_T XD_I

UART_D SR_I

U7U5

11

3

VCC=VD D_IO;GND=G ND

7

1

5

1

26

1

RXD_LE D

TXD_LE DRTS_LE D

DSR_LE D

VDD_IO

A

DS7

GREEN

C

A

AC

DS6

DS8

GREEN

ORANGE

C

R8R40 R39R7R11R10

1K01K0 1 K0

R41

10K

TP27

DNI

C49

100N

1

3

DNI

MCU BOOT

SW3SW1

2

4

D

5V

J14

1 3 5 7 9

2

1

4

3

4

6

5

6

8

7

8

9

10

12

11

14

13

16

15

17

18

19

20

21

22

24

23

26

25

27

28

30

29

32

31

34

33

35

36

38

37

40

39

RASP_T XD

10

RASP_R XD

12

RESET_ N

14 16

IO_16

18

IO_18

20 22

IO_22

24

IO_24

26

IO_26

28

IO_28

30 32

IO_30

34 36

IO_36

38

IO_38

40

IO_45

BI

C

DNI

B

A A

U-BLOX AG

THALWIL

SWITZERLAND

DESIGN BY :

DATE :

GROUP :

mwe j Thu Feb 15 14: 40:35 2018

u-blox AG $Change: 6053 27

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DRAWING TITLE :

HEADERS & BUTTONS

A3

EVB-ANNA-B1

PAGE 4 OF 6

VERSION :PROJECT :

PCB_VER.:

ICM:

02

B

1

E

EXTERNAL SU PPLY

D

LOW CURRENT LEAKAGE CAP S FOR SUPPLY HIGH CURR ENT PE AKS

IF USED, THE 5V NET MUS T BE SUPPLIED BY AN EX TERNA L SOURCE, USB ETC.

5V

5-12 V

J5

CON_PWR_03_SWITCH

D2

A

VIN

2 3

J17

DCDC_I N

C

F1

FUSE

1

2

1

COIN CELL BAT TERY 3V

VBATVBAT

100U

C58

DNI

C59

100U

VBAT

3V

BT1

3.3V REGULATED

C7

R5

100K

22U4U7

BATTERY PRO TECTI ON: NFC CAN CAUSE REVERSE

SW_1

SW_2

SW_3

VOS

AGND

PGND_1

PGND_2

PG

U1

L2L1

2U22U2

1

2

3

14

4

5

FB

68

15

16

TPS6213X

11

PVIN_1

12

C50

D3

2

CATAN

D6 J7

CA1

C2C1C3

10U

100N

C5

3N3

PVIN_2

10

AVIN

13

EN

9

SS/TR

DEF

7

FSW

VBAT

3V3

D4

A

CURRENT FLO W

62132 3.3V VER SION

POWER SOURCE SEL ECTOR

12345678

E

3V3_PI

1

2

3

C

3

4

5

6

7

8

9

10

11

12

11

VDD_AN NA VDD _MCU

2 4 6 8 10 12

D

C

J8

VUSB

USB MICRO B

DM

DP

N.C.

GND

SGND=G NDA

SUSB_M ICRO_B_4TH GND

B

GNDA

1 2 3 4 5

10M

100N

R1

C6

VBUS_M CU

USB_DM _MCUCON USB_DP _MCUCON

TP38

TP35

TP8

TP9

USBLC6 2SC6

1

I/O1 I/O1

3

I/O2 I/O2

2

D1

VBUS_M CU

VCCGND

6 4

5

USB_HU B_DM

USB_HU B_DP

BI

100N

USB

'ZERO VOLT DIO DE' - PROTECTS FROM BACK C URREN T O N VBUS LINES

5V

P_CHANNEL _MOSFET

DMG2305UX

21

Q1

4

E2 C2

5

A A

BASE_1

R9

10K

B2

6

3

2

BASE_1

B1

1

E1C1

VBUS_M CU

3

D

Q2

G S

47K

R71

DESIGN BY :

DATE :

GROUP :

mwe j Fri Feb 16 12: 12:25 2018

u-blox AG $Change: 6053 27

U-BLOX AG

THALWIL

SWITZERLAND

345678 2

DRAWING TITLE :

POWER SUPPLY

A3

EVB-ANNA-B1

PAGE 5 OF 6

VERSION :PROJECT :

PCB_VER.:

ICM:

02

B

1

C

B

B Glossary

Name Definition

API Application Programming Interface

CTS Clear To Send

DSR Data Set Ready

DTR Data Terminal Ready

EVB Evaluation Board

EVK Evaluation Kit

GND Ground

IO General-Purpose Input/Output

LED Light-Emitting Diode

MCU Micro Controller Unit

MSD Mass Storage Device

NFC Near Field Communication

U.FL Coaxial RF connector

USB Universal Serial Bus

RTS Request To Send

RXD Receive Data

SDK Software Development Kit

SPA Serial Port Application

TXD Transmit Data

UART Universal Asynchronous Receiver/Transmitter

Table 14: Explanation of abbreviations used

EVK-ANNA-B112 - User guide

UBX-18018539 - R02 Appendix Page 29 of 31 C1-Public

EVK-ANNA-B112 - User guide

Revision history

Revision Date Name Comments

R01 5-Jun-2018 hekf, mwej, kgom Initial release.

R02 18-Dec-2020 mape, fbro, mhan Updated description for RGB LED in Table 12.

Added more info on the antennas delivered with the EVK. Clarified open CPU information.

Added information about module variant ANNA-B112-70B.

UBX-18018539 - R02 Related documents Page 30 of 31 C1-Public

Contact

For complete contact information, visit us at www.u-blox.com.

u-blox Offices

North, Central and South America

u-blox America, Inc.

Phone: +1 703 483 3180 E-mail: info_us@u-blox.com

Regional Office West Coast:

Phone: +1 408 573 3640 E-mail: info_us@u-blox.com

Technical Support:

Phone: +1 703 483 3185 E-mail: support@u-blox.com

Headquarters Europe, Middle East, Africa

u-blox AG

Phone: +41 44 722 74 44 E-mail: info@u-blox.com Support: support@u-blox.com

EVK-ANNA-B112 - User guide

Asia, Australia, Pacific

u-blox Singapore Pte. Ltd.

Phone: +65 6734 3811 E-mail: info_ap@u-blox.com Support: support_ap@u-blox.com

Regional Office Australia:

Phone: +61 2 8448 2016 E-mail: info_anz@u-blox.com Support: support_ap@u-blox.com

Regional Office China (Beijing):

Phone: +86 10 68 133 545 E-mail: info_cn@u-blox.com Support: support_cn@u-blox.com

Regional Office China (Chongqing):

Phone: +86 23 6815 1588 E-mail: info_cn@u-blox.com Support: support_cn@u-blox.com

Regional Office China (Shanghai):

Phone: +86 21 6090 4832 E-mail: info_cn@u-blox.com Support: support_cn@u-blox.com

Regional Office China (Shenzhen):

Phone: +86 755 8627 1083 E-mail: info_cn@u-blox.com Support: support_cn@u-blox.com

Regional Office India:

Phone: +91 80 405 092 00 E-mail: info_in@u-blox.com Support: support_in@u-blox.com

Regional Office Japan (Osaka):

Phone: +81 6 6941 3660 E-mail: info_jp@u-blox.com Support: support_jp@u-blox.com

Regional Office Japan (Tokyo):

Phone: +81 3 5775 3850 E-mail: info_jp@u-blox.com Support: support_jp@u-blox.com

Regional Office Korea:

Phone: +82 2 542 0861 E-mail: info_kr@u-blox.com Support: support_kr@u-blox.com

Regional Office Taiwan:

Phone: +886 2 2657 1090 E-mail: info_tw@u-blox.com Support: support_tw@u-blox.com

UBX-18018539 - R02 Contact Page 31 of 31 C1-Public

u-blox EVK-ANNA-B112 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Abstract

Document Information

Contents

1 Product description

1.1 Overview

1.2 Kit includes

1.3 Key features

1.4 EVK-ANNA-B112 block diagram

1.5 Connectors

1.6 Antennas

1.7 Powering options

1.7.1 Selecting the power configuration jumpers

1.7.2 Default power, 3.3 V

1.7.3 Battery powered, 3 V

1.7.4 Battery powered with protection diode, 2.7 V

1.7.5 External supply

1.7.6 Raspberry Pi HAT

1.8 Arduino interface

1.8.1 Arduino shield compatibility

1.9 Raspberry Pi compatible interface

1.9.1 Powering considerations

1.9.2 UART

1.9.3 EEPROM support

1.10 Buttons and LEDs

1.11 Disconnecting ANNA signals from board peripherals

1.12 Software debug options

2 Setting up the evaluation board

2.1 Evaluation board setup

2.2 Starting up

2.2.1 EVK-ANNA-B112

2.2.2 Getting the latest u-connectXpress software

2.2.3 Open CPU

Appendix

A Placement and schematics

ANNA MODULE

INTERFACE MCU

HUB, FTDI AND FLASH

POWER SUPPLY

B Glossary

Related documents

Revision history

Contact