Rainbow Electronics MAXQ2010 User Manual

General Description

The MAXQ2010 microcontroller is a low-power, 16-bit device that incorporates a high-performance, 12-bit, multichannel ADC and a liquid-crystal display (LCD) interface. A combination of high performance, low power, and mixed-signal integration makes the MAXQ2010 ideal for a wide variety of applications.

The MAXQ2010 has 64KB of flash memory, 2KB of RAM, three 16-bit timers, and two universal synchronous/asynchronous receiver/transmitters (USARTs). Flash memory aids prototyping and is available for mass production. Mask ROM versions are available for large production volumes when cost is a critical factor. The microcontroller runs from a 2.7V to 3.6V operating supply. For the ultimate in low-power performance, the MAXQ2010 includes a low-power sleep mode, the ability to selectively disable peripherals, and multiple power-saving operating modes.

Applications

Features

o High-Performance, Low-Power, 16-Bit MAXQ

RISC Core

o DC to 10MHz Operation, Approaching 1MIPS per MHz

o 2.7V to 3.6V Operating Voltage

o 33 Instructions, Most Single Cycle

o Three Independent Data Pointers Accelerate Data

Movement with Automatic Increment/Decrement

o 16-Level Hardware Stack

o 16-Bit Instruction Word, 16-Bit Data Bus

o 16 x 16-Bit General-Purpose Working Registers

o Optimized for C-Compiler (High-Speed/Density

Code)

o On-Chip FLL Reduces External Clock Frequency o Memory Features

64KB Flash Memory (In-Application and In-System

Programmable) 2KB Internal Data RAM JTAG Bootloader for Programming and Debug

o Peripheral Features

12-Bit SAR ADC with Internal Reference and

Autoscan

Eight Single-Ended or Four Differential Inputs

Up to 312.5ksps Sample Rate Supply Voltage Monitor with Adjustable Threshold One-Cycle, 16 x 16 Hardware Multiply/Accumulate

with 48-Bit Accumulator

Three 16-Bit Programmable Timers/Counters with

PWM Outputs

32-Bit Binary Real-Time Clock with Digital Trim

Capability

Integrated LCD

160 Segments

No External Resistors Required Two USARTs, I

C Master/Slave, and SPI Master/

Slave Communications Ports On-Chip Power-On Reset/Brownout Reset Programmable Watchdog Timer

o Low Power Consumption

1mA (typ) at 1MHz Flash Operation at 2.7V 370nA (typ) in Stop Mode Low-Power Power-Management Mode (PMM)

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

________________________________________________________________

Maxim Integrated Products

Ordering Information

Rev 0; 7/08

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be

simultaneously available through various sales channels. For information about device errata, go to: www.maxim-ic.com/errata

Denotes a lead-free/RoHS-compliant package.

PART TEMP RANGE PIN-PACKAGE

MAXQ2010-RFX+ -40°C to +85°C 100 LQFP

Typical Application Circuit, Pin Configuration, and Selector Guide appear at end of data sheet.

MAXQ is a registered trademark of Maxim Integrated Products, Inc.

Battery-Powered and Portable Devices

Portable Medical Equipment

Blood Glucose Meters

Electrochemical and Optical Sensors

Industrial Control

Data-Acquisition Systems and Data Loggers

Home Appliances

Consumer Electronics

Thermostats/Humidity Sensors

Security Sensors

Gas and Chemical Sensors

HVAC

Smart Transmitters

Medical Instrumentation

Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Recommended DC Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

I2C Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

C Bus Controller Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

I2C Bus Controller Timing (Acting as I2C Master) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

I2C Bus Controller Timing (Acting as I2C Slave) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

MAXQ Core Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Instruction Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Memory Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Stack Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Utility ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

(Bootloader) In-System Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

In-Application Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

System Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

I/O Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Supply Voltage Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Serial Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

USART Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Real-Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Programmable Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Hardware Multiplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Analog-to-Digital Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

LCD Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

In-Circuit Debug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Grounds and Bypassing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Additional Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Development and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

2 _______________________________________________________________________________________

TABLE OF CONTENTS

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

_______________________________________________________________________________________ 3

Figure 1. SPI Master Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 2. SPI Slave Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 3. Series Resistors (R

) for Protecting Against High-Voltage Spikes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Figure 4. I2C Bus Controller Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Figure 5. MAXQ2010 Default Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Figure 6. Type C/D Port Pin Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Figure 7. ADC Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Figure 8. Two-Character, 1/2 Duty, LCD Interface Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Figure 9. In-Circuit Debugger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Table 1. Serial Port Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

LIST OF FIGURES

LIST OF TABLES

Typical Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Selector Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

TABLE OF CONTENTS (continued)

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

4 _______________________________________________________________________________________

RECOMMENDED DC OPERATING CONDITIONS

DVDD

= V

AVDD

= 2.7V to 3.6V, TA= -40°C to +85°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Voltage Range on All Pins (including AVDD,

DVDD) Relative to Ground .................................-0.5V to +3.6V

Voltage Range on Any Pin Relative to

Ground Except AVDD, DVDD .............-0.5V to (V

DVDD

+ 0.5V)

Operating Temperature Range ...........................-40°C to +85°C

Continuous Output Current

Any Single I/O Pin ............................................................20mA

All I/O Pins Combined....................................................100mA

Storage Temperature Range .............................-65°C to +150°C

Soldering Temperature...........................Refer to the IPC/JEDEC

J-STD-020 Specification.

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Digital Supply Voltage V

Digital Supply Voltage Output V

Analog Supply Voltage V

2.7 3.6 V

DVDD

REGOUT

(Note 2) 1.8 V

AVDD

= V

2.7 3.6 V

DVDD

Ground GND AGND = DGND 0 0 V

Digital Power-Fail Reset Voltage V

Active Current, FLL Disabled (Note 3)

Active Current, FLL Enabled (Note 5)

Stop-Mode Current (Note 6)

Stop-Mode Resume Time (Note 4)

Input Low Voltage on HFXIN and 32KIN

Input Low Voltage on All Other Pins

Monitors V

RST

= 10MH z, V

DD_HFX1

DD_HFX2

DD1_FLL

DD2_FLL

DD3_FLL

DD4_FLL

DD5_FLL

STOP_1

(Note 7)

STOP_2

(Note 8)

STOP_3

(Note 9)

STOP_1

STOP_2

STOP_3

IL1

IL2

FREQMD = 0

= 10MH z, V

FREQMD = 0 (Note 4)

Divide-by-1 mode, FREQMD = 0 3.15 4

Divide-by-2 mode, FREQMD = 0 (Note 4) 2.9 3.6

Divide-by-4 mode, FREQMD = 1 (Note 4) 2.25 3

Divide-by-8 mode, FREQMD = 1 (Note 4) 1.4 2

PMM mode, FREQMD = 1 (Note 4) 0.5 0.7

TA = +25°C 0.37 4

= +85°C 0.68 6.5

TA = +25°C 0.94 5

= +85°C 1.3 6.5

TA = +25°C 195 295

= +85°C 225 335

Internal regulator on 4t

Internal regulator off, brownout or SVM on, SVMSTOP = 1

Internal regulator, brownout, and SVM off 30 320

DGND

2.55 2.6 2.65 V

DVDD

= V

AVDD

= 2.7V,

= 3.6V,

3.1 3.75

3.2 4.0

30 160

CLCL

0.20 x V

DVDD

0.30 x V

DVDD

μA

μs

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

_______________________________________________________________________________________ 5

RECOMMENDED DC OPERATING CONDITIONS (continued)

DVDD

= V

AVDD

= 2.7V to 3.6V, TA= -40°C to +85°C.) (Note 1)

Note 1: Specifications to -40°C are guaranteed by design and are not production tested. Note 2: Typical value presented for reference only. Do not draw current from this pin. Note 3: FLL disabled. Crystal connected across HFXIN and HFXOUT. Operating in divide-by-1 mode. Measured on the DVDD pin

and part executing program code from flash. All inputs are connected to GND or DVDD. Outputs do not source/sink any current. Timer B enabled.

Note 4: This parameter is guaranteed by design and is not production tested. Note 5: FLL enabled. f

32KIN

= 32.768kHz, HFXIN = disconnected, FLL = 8.39MHz, measured on the DVDD pin, part executing program code from flash. All inputs are connected to GND or DVDD. Outputs do not source/sink any current. Timer B enabled.

Note 6: I

STOP

is the total current into the device when the device is in stop mode. This includes both the digital and analog current

(current into DVDD and AVDD).

Note 7: Regulator, brownout monitor, LCD, and RTC disabled. Note 8: Regulator, brownout monitor, and LCD disabled; RTC enabled. Note 9: Regulator enabled, brownout monitor enabled, and LCD and RTC disabled. Note 10: I

OH(MAX)

+ I

OL(MAX)

for all outputs combined should not exceed 35mA to meet the specification.

Note 11: When DVDD is switched off, SDA and SCL may obstruct the line.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input High Voltage on HFXIN and 32KIN

Input High Voltage on A ll Other Pins

Input Hystere sis (Schmitt) V

Output Low Voltage for All Port Pins (Note 10)

Output High Voltage for A ll Port Pins (Note 10)

IH1

IH2

0.18 V

IHYS

IOL = +4mA DGND 0.4 V

IOH = -4mA

0.75 x V

DVDD

0.70

DVDD

- 0.4

DVDD

I/O Pin Capacitance CIO Guaranteed by design 15 pF

I/O Pin Capacitance SCL, SDA (Note 11)

RST Pul lup Resistance R Input Low Current for RST Pin I

Input Low Current for All Other Pins

Guaranteed by design 10 pF

IO_I2C

30 85 k

RST

VIN = 0.4V -85 -30 μA

IL1

VIN = 0.4V -85 -30 μA

IL2

Input Leakage Current IL Internal pullup disab led -150 +150 nA

Input Pullup Resistor RPU 30 85 k

CLOCK SOURCE

External Clock Frequency f

External Clock Period t

External Clock Duty Cycle t

DC 10 MHz

HFIN

100 ns

CLCL

XCLK_DUTY

40 60 %

System Clock Frequency fCK DC 10 MHz

FREQUENCY-LOCKED LOOP (FLL)

FLL Output Frequency f

FLL Output Frequency Delta f

FLL

= 32.768kHz 8.4 MHz

32KIN

= 32.768kHz 1.5 ±5 %

32KIN

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

6 _______________________________________________________________________________________

RECOMMENDED DC OPERATING CONDITIONS (continued)

DVDD

= V

AVDD

= 2.7V to 3.6V, TA= -40°C to +85°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

FLASH PROGRAMMING

System Clock During Flash Programm ing/Erase

Flash Erase Time

Flash Programming Time per Word (Note 12)

2 MHz

Mas s era se 24

Page erase 24

66 μs

Write/Erase Cycles 20,000 Cycles

Data Retention TA = +25°C 100 Years

ANALOG-TO-DIGITAL CONVERTER (Note 13)

Serial Clock Frequency f

Input Voltage Range V

Analog Input Capacitance C

Current Consumption (Note 4)

ANALOG-TO-DIGITAL CONVERTER PERFORMANCE (V

0.1 5 MHz

SCLK

AIN

AVDD1

AVDD2

Unipolar (single-ended) 0 V

Bipo lar (differential) (Note 14) -V

/2 +V

REF

16 pF

= 5MHz, internal reference 1.9 2.5 mA

SCLK

= 5MHz, external reference (internal

SCLK

reference di sabled)

= V

REF

AVDD

, 0.1μF capacitor on V

1.1 1.3 μA

, f

SCLK

= 5MHz)

REF

Resolution 12 Bits

Integral Nonlinearity INL ±1 ±2 LSB

Differentia l Non linearity DNL No mi ssing codes over temperature ±1 LSB

Offset Error VOS ±2 LSB

Offset Temperature Coefficient ±0.5 ppm/°C

Gain Error ±1 %

Gain Temperature Coefficient ±0.5 ppm/°C

Signal-to-Noise Plus Distortion SINAD fIN = 1kHz 65 dB

Spurious-Free Dynamic Range SFDR fIN = 1kHz 68 dB

Throughput 16 SCLK samples 312.5 ksp s

Conversion Time t

ADC Setup Time

ADC_SETUP

Input Leakage Current I

Autoscan Throughput All channels active 39

Not including t

CONV

(Note 15)

ILA

2.6 μs

ACQ

4 μs

Shutdown or conversion stopped, ANx and V

AEREF

±1 μA

ksps per

channel

ANALOG-TO-DIGITAL CONVERTER REFERENCE

Internal Reference Voltage V

Internal Reference Voltage Startup Time

1.47 1.5 1.53 V

AIREF

50 μs

AIREF

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

_______________________________________________________________________________________ 7

RECOMMENDED DC OPERATING CONDITIONS (continued)

DVDD

= V

AVDD

= 2.7V to 3.6V, TA= -40°C to +85°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

External Reference Voltage Input

Internal Reference Voltage Drift V

Reference Settle Time (Switching ADC Reference from Either Internal or External Reference to AV

) (Note 16)

AEREF

ADRIFT

AAVDD_

SETUP

(Note 17)

0.9

Guaranteed by design ±50 ppm/°C

4 Sample s

AVDD

+ 0.05

SUPPLY VOLTAGE MONITOR

Supply Voltage Set Point V

Supply Voltage Increment Resolution (Note 18)

2.7 3.5 V

SVM

0.08 0.1 0.12 V

INC

Supply Voltage Default Set Point 2.7 μA

Supply Voltage Monitor Current Consumption

20 μs

SVM

Supply Voltage Monitor Setup Time (Time from Supply Voltage Monitor Enabled to SVMRDY Is

SVM_SU

15 25 μs

Set to 1) (Note 18)

REAL-TIME CLOCK

RTC Input Frequency f

RTC Operating Current I

32kHz watch cry stal 32,768 Hz

32KIN

= 2.7V, guaranteed by design 0.45 0.7

RTC

DVDD

= 3.6V 0.5 0.8

DVDD

LCD

LCD Reference Voltage V

LCD Bias Voltage 1 V

LCD Bias Voltage 2 V

LCD Adjustment Voltage V

LCD Bia s Re sistor R

LCD Adjustment Resistor R

LCD Segment and COM Voltage (Note 18)

LCD Output Rise Time t

LCD

1/3 bias

LCD1

1/3 bias

LCD2

Guaranteed by design 0

ADJ

40 k

LCD

LRA[3:0] = 15 80 k

LADJ

SEGxx

LCD_RI SE

Pin is driven at V

COM output load = 5000pF, SEG output load = 200pF, V

LCD

LCD1

LCD2

ADJ

LCD

= 3V, I

= 2V, I

= 1V, I

= 0V, I

= 3.3V

= -3μA

SEGxx

= -3μA

SEGxx

= -3μA

SEGxx

= -3μA -0.1 +0.1

SEGxx

3.6 V

DVDD

ADJ

LCD

0.02

LCD1

2/3 (V

- V

LCD

ADJ

- V

LCD

ADJ

0.02

LCD2

0.02

200 μs

)

0.4 x V

LCD1

0.02

LCD2

0.02

)

LCD

μA

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

8 _______________________________________________________________________________________

Note 12: Programming time does not include overhead associated with the utility ROM interface. Note 13: V

REF

= AVDD.

Note 14: The operational input voltage range for each individual input of a differentially configured pair is from GND to AVDD. The

operational input voltage difference is from -V

REF

/2 to +V

REF

/2.

Note 15: The typical value is applied when a conversion is requested with ADPMO = 0. Under these conditions, the minimum delay

is met. If ADPMO = 1, the user is responsible for ensuring the 4µs delay time is met.

Note 16: Switching ADC reference from either internal or external reference to AVDD. Sample accuracy is not guaranteed prior to

ADC reference settlement.

Note 17: Total on-board decoupling capacitance on the AVDD pin < 100nF. The output impedance of the regulator driving the

AVDD pin < 10Ω.

Note 18: This parameter is guaranteed by design and is not production tested.

RECOMMENDED DC OPERATING CONDITIONS (continued)

DVDD

= V

AVDD

= 2.7V to 3.6V, TA= -40°C to +85°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SPI (See Figures 1 and 2)

SPI Master Operating Frequency 1/t

SPI Slave Operating Frequency 1/t

SCLK Output Pulse-Width High/Low

SCLK Input Pulse-Width High/Low

MCH

SCH

MOSI Outp ut Hold T i me After SCLK Sample Edge

MOSI Output Valid to Sample Edge

MISO Input Valid to SCLK Sample Edge Rise/Fall Setup

MISO Input to SCLK Sample Edge Rise/ Fal l Ho ld

SCLK Inactive to MOSI Inactive t

SSEL Active to First Shift Edge t

MOSI Input to SCLK Sample Edge Rise/Fall Setup

MOSI Input from SCLK Sample Edge Transit ion Hold

MISO Output Valid After SCLK Shift Edge Transit ion

SSEL Inactive t

SCLK Inactive to SSEL Rising t

MISO Output Di sabled After SSEL Edge Rise

MCK

SCK

/2)

, t

MCL

, t

SCL

CL = 50pF

MOH

MOV

25 ns

MIS

0 ns

MIH

MLH

4tCK ns

SSE

20 ns

SIS

SIH

SOV

SSH

SLH

MCK

- 25

MCK

- 25

MCK

- 25

MCK

- 25

tCK +

/2)

fCK/2 MHz

/2 ns

SCK

/8 MHz

MAXQ2010

SSEL

SHIFT SHIFTSAMPLE SAMPLE

MOSI

MISO

SCLK

CKPOL/CKPHA

0/1 OR 1/0

SCLK

CKPOL/CKPHA

0/0 OR 1/1

SCH

SCL

SIS

SOV

SLH

SSH

SIH

SSE

SCK

MSB MSB-1

LSB

MSB LSBMSB-1

SSEL

SHIFT SHIFTSAMPLE SAMPLE

MOSI

MISO

SCLK

CKPOL/CKPHA

0/1 OR 1/0

SCLK

CKPOL/CKPHA

0/0 OR 1/1

MCK

MCH

MCL

MOH

MOV

MIS

MIH

MLH

MSB MSB-1

LSB

16-Bit Mixed-Signal Microcontroller with LCD

_______________________________________________________________________________________ 9

Figure 2. SPI Slave Timing

Figure 1. SPI Master Timing

MAXQ2010

16-Bit Mixed-Signal Microcontroller with LCD

10 ______________________________________________________________________________________

I2C ELECTRICAL CHARACTERISTICS

DVDD

= V

AVDD

= 2.7V to 3.6V, TA= -40°C to +85°C.)

Note 19: Devices that use nonstandard supply voltages that do not conform to the intended I

C bus system levels must relate their

input levels to the voltage to which the pullup resistors R

are connected. See Figure 3.

Note 20: C

—Capacitance of one bus line in pF.

Note 21: The maximum fall time of 300ns for the SDA and SCL bus lines shown in the

I2C Bus Controller Timing

table is longer than

the specified maximum t

OF_I2C

of 250ns for the output stages. This allows series protection resistors (RS) to be connected

between the SDA/SCL pins and the SDA/SCL bus lines as shown in the

I2C Bus Controller Timing (Acting as I2C Slave)

table without exceeding the maximum specified fall time. See Figure 3.

SDA

P6.7

SCL

P6.6

RSR

I2C

DEVICE

RSR

I2C

DEVICE

RPR

DVDD

MAXQ2010

Figure 3. Series Resistors (RS) for Protecting Against High-Voltage Spikes

PARAMETER S YMBOL TEST CONDITIONS

Input Low Voltage (Note 19) V

Input High Voltage (Note 19) V

Input Hystere sis (Schmitt) V

Output Logic-Low (Open Drain or Open Collector)

-0.5 0.3 x V

IL_I2C

0.7 x V

IH_I2C

IHYS_I2C VDVDD

OL_I2C

> 2V 0.05 x V

> 2V, 3mA s in k

DVDD

current

Output Fall Time from

to V

IH_MIN

Capacitance from 10pF to

IL_MAX

with Bus

250 20 + 0.1CB 250 ns

OF_I2C

400pF (Notes 20, 21)

Pulse Width of Spike Filtering That Mu st Be

0 50 ns

SP_I2C

Suppressed by Input Filter

STANDARD MODE FAST MODE

MIN MAX MIN MAX

-0.5 0.3 x V

DVDD

0.7 x V

DVDD

DVDD VDVDD

DVDD

0 0.4 0 0.4 V

UNITS

DVDD

+ 0.5V V

Input Current on I/O I

I/O Capacitance C

IN_I2C

IO_I2C

Input voltage from 0.1 x V

to 0.9 x V

DVDD

-10 +10 -10 +10 μA

10 10 pF

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