• 1.8-V or 3.3-V LVCMOS I/Os (Except for USB and
DDR2 Interfaces)
• Two External Memory Interfaces:
– EMIFA
•NOR (8- or 16-Bit-Wide Data)
•NAND (8- or 16-Bit-Wide Data)
•16-Bit SDRAM with 128-MB Address Space
– DDR2/Mobile DDR Memory Controller with one
of the following:
•16-Bit DDR2 SDRAM with 256-MB Address
Space
•16-Bit mDDR SDRAM with 256-MB Address
Space
• Three Configurable 16550-Type UART Modules:
– With Modem Control Signals
– 16-Byte FIFO
– 16x or 13x Oversampling Option
• LCD Controller
• Two Serial Peripheral Interfaces (SPIs) Each with
Multiple Chip Selects
• Two Multimedia Card (MMC)/Secure Digital (SD)
Card Interfaces with Secure Data I/O (SDIO)
Interfaces
• Two Master and Slave Inter-Integrated Circuits
( I2C Bus™)
• One Host-Port Interface (HPI) with 16-Bit-Wide
Muxed Address and Data Bus For High Bandwidth
• Programmable Real-Time Unit Subsystem
(PRUSS)
– Two Independent Programmable Real-Time Unit
(PRU) Cores
•32-Bit Load-Store RISC Architecture
•4KB of Instruction RAM per Core
•512 Bytes of Data RAM per Core
•PRUSS can be Disabled via Software to
Save Power
•Register 30 of Each PRU is Exported from
1
the Subsystem in Addition to the Normal R31
AM1806
SPRS658F –FEBRUARY 2010–REVISED MARCH 2014
Output of the PRU Cores.
– Standard Power-Management Mechanism
•Clock Gating
•Entire Subsystem Under a Single PSC Clock
Gating Domain
– Dedicated Interrupt Controller
– Dedicated Switched Central Resource
• USB 2.0 OTG Port with Integrated PHY (USB0)
– USB 2.0 High- and Full-Speed Client
– USB 2.0 High-, Full-, and Low-Speed Host
– End Point 0 (Control)
– End Points 1,2,3,4 (Control, Bulk, Interrupt or
ISOC) RX and TX
• One Multichannel Audio Serial Port (McASP):
– Transmit and Receive Clocks
– Two Clock Zones and 16 Serial Data Pins
– Supports TDM, I2S, and Similar Formats
– DIT-Capable
– FIFO Buffers for Transmit and Receive
• Two Multichannel Buffered Serial Ports (McBSPs):
– Transmit and Receive Clocks
– Supports TDM, I2S, and Similar Formats
– AC97 Audio Codec Interface
– Telecom Interfaces (ST-Bus, H100)
– 128-Channel TDM
– FIFO Buffers for Transmit and Receive
• Video Port Interface (VPIF):
– Two 8-Bit SD (BT.656), Single 16-Bit or Single
Raw (8-, 10-, and 12-Bit) Video Capture
Channels
– Two 8-Bit SD (BT.656), Single 16-Bit Video
Display Channels
• Universal Parallel Port (uPP):
– High-Speed Parallel Interface to FPGAs and
Data Converters
– Data Width on Both Channels is 8- to 16-Bit
Inclusive
– Single-Data Rate or Dual-Data Rate Transfers
– Supports Multiple Interfaces with START,
ENABLE, and WAIT Controls
• Real-Time Clock (RTC) with 32-kHz Oscillator and
Separate Power Rail
• Three 64-Bit General-Purpose Timers (Each
Configurable as Two 32-Bit Timers)
• One 64-Bit General-Purpose or Watchdog Timer
(Configurable as Two 32-Bit General-Purpose
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
AM1806
SPRS658F –FEBRUARY 2010–REVISED MARCH 2014
www.ti.com
Timers)• Three 32-Bit Enhanced Capture (eCAP) Modules:
• Two Enhanced High-Resolution Pulse Width– Configurable as 3 Capture Inputs or 3 Auxiliary
Modulators (eHRPWMs):Pulse Width Modulator (APWM) Outputs
– Dedicated 16-Bit Time-Base Counter with– Single-Shot Capture of up to Four Event Time-
The AM1806 ARM Microprocessor is a low-power applications processor based on ARM926EJ-S.
The device enables original-equipment manufacturers (OEMs) and original-design manufacturers (ODMs)
to quickly bring to market devices featuring robust operating systems support, rich user interfaces, and
high processing performance life through the maximum flexibility of a fully integrated mixed processor
solution.
The ARM926EJ-S is a 32-bit RISC processor core that performs 32-bit or 16-bit instructions and
processes 32-bit, 16-bit, or 8-bit data. The core uses pipelining so that all parts of the processor and
memory system can operate continuously.
The ARM core has a coprocessor 15 (CP15), protection module, and data and program memory
management units (MMUs) with table look-aside buffers. The ARM core processor has separate 16-KB
instruction and 16-KB data caches. Both are four-way associative with virtual index virtual tag (VIVT). The
ARM core also has 8KB of RAM (Vector Table) and 64KB of ROM.
The peripheral set includes: one USB2.0 OTG interface; two inter-integrated circuit (I2C Bus) interfaces;
one multichannel audio serial port (McASP) with 16 serializers and FIFO buffers; two multichannel
buffered serial ports (McBSPs) with FIFO buffers; two serial peripheral interfaces (SPIs) with multiple chip
selects; four 64-bit general-purpose timers each configurable (one configurable as watchdog); a
configurable 16-bit host-port interface (HPI); up to 9 banks of general-purpose input/output (GPIO) pins,
with each bank containing 16 pins with programmable interrupt and event generation modes, multiplexed
with other peripherals; three UART interfaces (each with RTS and CTS); two enhanced high-resolution
pulse width modulator (eHRPWM) peripherals; three 32-bit enhanced capture (eCAP) module peripherals
which can be configured as 3 capture inputs or 3 auxiliary pulse width modulator (APWM) outputs; two
external memory interfaces; an asynchronous and SDRAM external memory interface (EMIFA) for slower
memories or peripherals; and a higher speed DDR2/Mobile DDR controller.
AM1806
SPRS658F –FEBRUARY 2010–REVISED MARCH 2014
The universal parallel port (uPP) provides a high-speed interface to many types of data converters,
FPGAs or other parallel devices. The uPP supports programmable data widths between 8- to 16-bits on
both channels. Single-data rate and double-data rate transfers are supported as well as START, ENABLE,
and WAIT signals to provide control for a variety of data converters.
A video port interface (VPIF) is included providing a flexible video I/O port.
The rich peripheral set provides the ability to control external peripheral devices and communicate with
external processors. For details on each of the peripherals, see the related sections in this document and
the associated peripheral reference guides.
The device has a complete set of development tools for the ARM processor. These tools include C
compilers, and scheduling, and a Windows®debugger interface for visibility into source code execution.
Device Information
PART NUMBERPACKAGEBODY SIZE
AM1806ZCENFBGA (361)13,00 mm x 13,00 mm
AM1806ZWTNFBGA (361)16,00 mm x 16,00 mm
Table 3-1 provides an overview of the device. The table shows significant features of the device, including
the capacity of on-chip RAM, peripherals, and the package type with pin count.
Table 3-1. Characteristics of the Device
HARDWARE FEATURESAM1806
DDR2/mDDR Controller
EMIFA
Flash Card InterfaceMMC and SD cards supported
EDMA3
Timers
Peripherals
Not all peripherals pins
are available at the
same time (for more
detail, see the Device
Configurations section).
On-Chip Memory
JTAG BSDL_IDDEVIDR0 Register0x0B7D_102F
CPU FrequencyMHzARM926 375 MHz (1.2V) or 456 MHz (1.3V)
Voltage
Packages
Product Status
(1) PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
(1)
UART3 (each with RTS and CTS flow control)
SPI2 (Each with one hardware chip select)
I2C2 (both Master/Slave)
Multichannel Audio Serial Port [McASP]1 (each with transmit/receive, FIFO buffer, 16 serializers)
Multichannel Buffered Serial Port [McBSP]2 (each with transmit/receive, FIFO buffer, 16)
eHRPWM
USB 2.0 (USB0)High-Speed OTG Controller with on-chip OTG PHY
General-Purpose Input/Output Port9 banks of 16-bit
LCD Controller1
Universal Parallel Port (uPP)1
Video Port Interface (VPIF)1 (video in and video out)
PRU Subsystem (PRUSS)2 Programmable PRU Cores
Size (Bytes)168KB RAM
Organization8KB RAM (Vector Table)
Core (V)
I/O (V)1.8V or 3.3 V
Product Preview (PP),
Advance Information (AI),
or Production Data (PD)
4 64-Bit General Purpose (each configurable as 2 separate
DDR2, 16-bit bus width, up to 156 MHz
Mobile DDR, 16-bit bus width, up to 150 MHz
Asynchronous (8/16-bit bus width) RAM, Flash,
16-bit SDRAM, NOR, NAND
64 independent channels, 16 QDMA channels,
2 channel controllers, 3 transfer controllers
32-bit timers, one configurable as Watch Dog)
4 Single Edge, 4 Dual Edge Symmetric, or
2 Dual Edge Asymmetric Outputs
ARM
16KB I-Cache
16KB D-Cache
64KB ROM
ADDITIONAL MEMORY
128KB RAM
1.2 V nominal for 375 MHz version
1.3 V nominal for 456 MHz version
13 mm x 13 mm, 361-Ball 0.65 mm pitch, PBGA (ZCE)
16 mm x 16 mm, 361-Ball 0.80 mm pitch, PBGA (ZWT)
The ARM926EJ-S RISC CPU is compatible with other ARM9 CPUs from ARM Holdings plc.
3.3ARM Subsystem
The ARM Subsystem includes the following features:
•ARM926EJ-S RISC processor
•ARMv5TEJ (32/16-bit) instruction set
•Little endian
•System Control Co-Processor 15 (CP15)
•MMU
•16KB Instruction cache
•16KB Data cache
•Write Buffer
•Embedded Trace Module and Embedded Trace Buffer (ETM/ETB)
•ARM Interrupt controller
3.3.1ARM926EJ-S RISC CPU
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The ARM Subsystem integrates the ARM926EJ-S processor. The ARM926EJ-S processor is a member of
ARM9 family of general-purpose microprocessors. This processor is targeted at multi-tasking applications
where full memory management, high performance, low die size, and low power are all important. The
ARM926EJ-S processor supports the 32-bit ARM and 16 bit THUMB instruction sets, enabling the user to
trade off between high performance and high code density. Specifically, the ARM926EJ-S processor
supports the ARMv5TEJ instruction set, which includes features for efficient execution of Java byte codes,
providing Java performance similar to Just in Time (JIT) Java interpreter, but without associated code
overhead.
The ARM926EJ-S processor supports the ARM debug architecture and includes logic to assist in both
hardware and software debug. The ARM926EJ-S processor has a Harvard architecture and provides a
complete high performance subsystem, including:
•ARM926EJ -S integer core
•CP15 system control coprocessor
•Memory Management Unit (MMU)
•Separate instruction and data caches
•Write buffer
•Separate instruction and data (internal RAM) interfaces
•Separate instruction and data AHB bus interfaces
•Embedded Trace Module and Embedded Trace Buffer (ETM/ETB)
For more complete details on the ARM9, refer to the ARM926EJ-S Technical Reference Manual, available
at http://www.arm.com
3.3.2CP15
The ARM926EJ-S system control coprocessor (CP15) is used to configure and control instruction and
data caches, Memory Management Unit (MMU), and other ARM subsystem functions. The CP15 registers
are programmed using the MRC and MCR ARM instructions, when the ARM in a privileged mode such as
supervisor or system mode.
A single set of two level page tables stored in main memory is used to control the address translation,
permission checks and memory region attributes for both data and instruction accesses. The MMU uses a
single unified Translation Lookaside Buffer (TLB) to cache the information held in the page tables. The
MMU features are:
•Standard ARM architecture v4 and v5 MMU mapping sizes, domains and access protection scheme.
•Access permissions for large pages and small pages can be specified separately for each quarter of
the page (subpage permissions)
•Hardware page table walks
•Invalidate entire TLB, using CP15 register 8
•Invalidate TLB entry, selected by MVA, using CP15 register 8
•Lockdown of TLB entries, using CP15 register 10
3.3.4Caches and Write Buffer
AM1806
SPRS658F –FEBRUARY 2010–REVISED MARCH 2014
The size of the Instruction cache is 16KB, Data cache is 16KB. Additionally, the caches have the following
features:
•Virtual index, virtual tag, and addressed using the Modified Virtual Address (MVA)
•Four-way set associative, with a cache line length of eight words per line (32-bytes per line) and with
two dirty bits in the Dcache
•Dcache supports write-through and write-back (or copy back) cache operation, selected by memory
region using the C and B bits in the MMU translation tables
•Critical-word first cache refilling
•Cache lockdown registers enable control over which cache ways are used for allocation on a line fill,
providing a mechanism for both lockdown, and controlling cache corruption
•Dcache stores the Physical Address TAG (PA TAG) corresponding to each Dcache entry in the TAG
RAM for use during the cache line write-backs, in addition to the Virtual Address TAG stored in the
TAG RAM. This means that the MMU is not involved in Dcache write-back operations, removing the
possibility of TLB misses related to the write-back address.
•Cache maintenance operations provide efficient invalidation of, the entire Dcache or Icache, regions of
the Dcache or Icache, and regions of virtual memory.
The write buffer is used for all writes to a noncachable bufferable region, write-through region and write
misses to a write-back region. A separate buffer is incorporated in the Dcache for holding write-back for
cache line evictions or cleaning of dirty cache lines. The main write buffer has 16-word data buffer and a
four-address buffer. The Dcache write-back has eight data word entries and a single address entry.
3.3.5Advanced High-Performance Bus (AHB)
The ARM Subsystem uses the AHB port of the ARM926EJ-S to connect the ARM to the Config bus and
the external memories. Arbiters are employed to arbitrate access to the separate D-AHB and I-AHB by the
Config Bus and the external memories bus.
3.3.6Embedded Trace Macrocell (ETM) and Embedded Trace Buffer (ETB)
To support real-time trace, the ARM926EJ-S processor provides an interface to enable connection of an
Embedded Trace Macrocell (ETM). The ARM926ES-J Subsystem in the device also includes the
Embedded Trace Buffer (ETB). The ETM consists of two parts:
•Trace Port provides real-time trace capability for the ARM9.
•Triggering facilities provide trigger resources, which include address and data comparators, counter,
and sequencers.
The device trace port is not pinned out and is instead only connected to the Embedded Trace Buffer. The
ETB has a 4KB buffer memory. ETB enabled debug tools are required to read/interpret the captured trace
data.
3.3.7ARM Memory Mapping
By default the ARM has access to most on and off chip memory areas, including EMIFA, DDR2, and the
additional 128K byte on chip SRAM. Likewise almost all of the on chip peripherals are accessible to the
ARM by default.
To improve security and/or robustness, the device has extensive memory and peripheral protection units
which can be configured to limit access rights to the various on/off chip resources to specific hosts;
including the ARM as well as other master peripherals. This allows the system tasks to be partitioned
between the ARM and DSP as best suites the particular application; while enhancing the overall
robustness of the solution.
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See Table 3-2 for a detailed top level device memory map that includes the ARM memory space.
Extensive use of pin multiplexing is used to accommodate the largest number of peripheral functions in
the smallest possible package. Pin multiplexing is controlled using a combination of hardware
configuration at device reset and software programmable register settings.
3.5.1Pin Map (Bottom View)
The following graphics show the bottom view of the ZCE and ZWT packages pin assignments in four
quadrants (A, B, C, and D). The pin assignments for both packages are identical.
Device level pin multiplexing is controlled by registers PINMUX0 - PINMUX19 in the SYSCFG module.
For the device family, pin multiplexing can be controlled on a pin-by-pin basis. Each pin that is multiplexed
with several different functions has a corresponding 4-bit field in one of the PINMUX registers.
Pin multiplexing selects which of several peripheral pin functions controls the pin's IO buffer output data
and output enable values only. The default pin multiplexing control for almost every pin is to select 'none'
of the peripheral functions in which case the pin's IO buffer is held tri-stated.
Note that the input from each pin is always routed to all of the peripherals that share the pin; the PINMUX
registers have no effect on input from a pin.
Table 3-3 to Table 3-27 identify the external signal names, the associated pin/ball numbers along with the
mechanical package designator, the pin type (I, O, IO, OZ, or PWR), whether the pin/ball has any internal
pullup/pulldown resistors, whether the pin/ball is configurable as an IO in GPIO mode, and a functional pin
description.
TMSL16IIPUBJTAG test mode select
TDIM16IIPUBJTAG test data input
TDOJ18OIPUBJTAG test data output
TCKJ15IIPUBJTAG test clock
TRSTL17IIPDBJTAG test reset
EMU0J16I/OIPUBEmulation pin
EMU1K16I/OIPUBEmulation pin
RTCK/ GP8[0]
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: For multiplexed pins where functions have different types (ie., input versus output), the table reflects the pin function direction for
that particular peripheral.
(2) IPD = Internal Pulldown resistor, IPU = Internal Pullup resistor. CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. For more detailed information on pullup/pulldown resistors and situations
where external pullup/pulldown resistors are required, see the Device Configuration section. For electrical specifications on pullup and
internal pulldown circuits, see the Device Operating Conditions section.
(3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can
be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of
power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power
supply DVDD3318_C.
(4) Open drain mode for RESETOUT function.
(5) GP8[0] is initially configured as a reserved function after reset and will not be in a predictable state. This signal will only be stable after
the GPIO configuration for this pin has been completed. Users should carefully consider the system implications of this pin being in an
PLL0_VDDAL15PWR——PLL analog VDD(1.2-V filtered supply)
PLL0_VSSAM17GND——PLL analog VSS(for filter)
1.2-V PLL1
PLL1_VDDAN15PWR——PLL analog VDD(1.2-V filtered supply)
PLL1_VSSAM15GND——PLL analog VSS(for filter)
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: For multiplexed pins where functions have different types (ie., input versus output), the table reflects the pin function direction for
that particular peripheral.
(2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. For more detailed information on pullup/pulldown resistors and situations
where external pullup/pulldown resistors are required, see the Device Configuration section. For electrical specifications on pullup and
internal pulldown circuits, see the Device Operating Conditions section.
(3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can
be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of
power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: For multiplexed pins where functions have different types (ie., input versus output), the table reflects the pin function direction for
that particular peripheral.
(2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. The pull-up and pull-down control of these pins is not active until the
device is out of reset. During reset, all of the pins associated with these registers are pulled down. If the application requires a pull-up,
an external pull-up can be used. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see the Device Configuration section. For electrical specifications on pullup and internal pulldown
circuits, see the Device Operating Conditions section.
(3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can
be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of
power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power
supply DVDD3318_C.
3.7.4DEEPSLEEP Power Control
Table 3-6. DEEPSLEEP Power Control Terminal Functions
SIGNAL
NAMENO.
TYPE
(1)
PULL
RTC_ALARM / UART2_CTS / GP0[8] / DEEPSLEEPF4ICP[0]ADEEPSLEEP power control output
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: For multiplexed pins where functions have different types (ie., input versus output), the table reflects the pin function direction for
that particular peripheral.
(2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. The pull-up and pull-down control of these pins is not active until the
device is out of reset. During reset, all of the pins associated with these registers are pulled down. If the application requires a pull-up,
an external pull-up can be used. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see the Device Configuration section. For electrical specifications on pullup and internal pulldown
circuits, see the Device Operating Conditions section.
(3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can
be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of
power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: The pin type shown refers to the input, output or high-impedance state of the pin function when configured as the signal name
highlighted in bold. All multiplexed signals may enter a high-impedance state when the configured function is input-only or the configured
function supports high-Z operation. All GPIO signals can be used as input or output. For multiplexed pins where functions have different
types (ie., input versus output), the table reflects the pin function direction for that particular peripheral.
(2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. The pull-up and pull-down control of these pins is not active until the
device is out of reset. During reset, all of the pins associated with these registers are pulled down. If the application requires a pull-up,
an external pull-up can be used. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see the Device Configuration section. For electrical specifications on pullup and internal pulldown
circuits, see the Device Operating Conditions section.
(3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can
be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of
power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: The pin type shown refers to the input, output or high-impedance state of the pin function when configured as the signal name
highlighted in bold. All multiplexed signals may enter a high-impedance state when the configured function is input-only or the configured
function supports high-Z operation. All GPIO signals can be used as input or output. For multiplexed pins where functions have different
types (ie., input versus output), the table reflects the pin function direction for that particular peripheral.
(2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. For more detailed information on pullup/pulldown resistors and situations
where external pullup/pulldown resistors are required, see the Device Configuration section. For electrical specifications on pullup and
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: The pin type shown refers to the input, output or high-impedance state of the pin function when configured as the signal name
highlighted in bold. All multiplexed signals may enter a high-impedance state when the configured function is input-only or the configured
function supports high-Z operation. All GPIO signals can be used as input or output. For multiplexed pins where functions have different
types (ie., input versus output), the table reflects the pin function direction for that particular peripheral.
(2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. The pull-up and pull-down control of these pins is not active until the
device is out of reset. During reset, all of the pins associated with these registers are pulled down. If the application requires a pull-up,
an external pull-up can be used. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see the Device Configuration section. For electrical specifications on pullup and internal pulldown
circuits, see the Device Operating Conditions section.
(3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can
be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of
power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: The pin type shown refers to the input, output or high-impedance state of the pin function when configured as the signal name
highlighted in bold. All multiplexed signals may enter a high-impedance state when the configured function is input-only or the configured
function supports high-Z operation. All GPIO signals can be used as input or output. For multiplexed pins where functions have different
types (ie., input versus output), the table reflects the pin function direction for that particular peripheral.
(2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. The pull-up and pull-down control of these pins is not active until the
device is out of reset. During reset, all of the pins associated with these registers are pulled down. If the application requires a pull-up,
an external pull-up can be used. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see the Device Configuration section. For electrical specifications on pullup and internal pulldown
circuits, see the Device Operating Conditions section.
(3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can
be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of
power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power