Datasheet

2 Maxim Integrated
16-Bit Microcontrollers with
Infrared Module and Optional USB
MAXQ612/MAXQ622
TABLE OF CONTENTS
Absolute Maximum Ratings ...................................................................... 4
Recommended Operating Conditions
.............................................................. 4
I
2
C Electrical Characteristics ..................................................................... 8
I
2
C Bus Controller Timing ....................................................................... 9
Pin Configurations
............................................................................ 11
Pin Descriptions—TQFN, LQFP
.................................................................. 13
Pin Descriptions—Bare Die
..................................................................... 18
Detailed Description
........................................................................... 21
Microprocessor
............................................................................... 22
Memory
.................................................................................... 22
Memory Protection
..........................................................................22
Stack Memory
..............................................................................22
Utility ROM
................................................................................22
Watchdog Timer
.............................................................................. 23
IR Carrier Generation and Modulation Timer
........................................................ 23
Carrier Generation Module
....................................................................24
IR Transmission
.............................................................................24
IR Transmit—Independent External Carrier and Modulator Outputs
....................................24
IR Receive
.................................................................................24
Carrier Burst-Count Mode
.....................................................................25
16-Bit Timers/Counters
......................................................................... 25
General-Purpose I/O
.......................................................................... 25
Serial Peripherals
............................................................................. 25
USART
....................................................................................25
Serial Peripheral Interface (SPI)
................................................................26
I
2
C Bus ...................................................................................26
USB Controller (MAXQ622 Only)
................................................................. 26
On-Chip Oscillator
............................................................................ 26
ROM Loader
................................................................................. 27
Loading Flash Memory
......................................................................... 27
In-Application Flash Programming
................................................................ 27
In-Circuit Debug and JTAG Interface
............................................................. 27
Operating Modes
............................................................................. 28
Power-Supply Selection
......................................................................28
Stop Mode
.................................................................................28
Power-Fail Warning
..........................................................................29