MAXQ305 Datasheet, PDF (1/29 Pages) Maxim Integrated Products – Low-Voltage Microcontroller with Infrared Module

MAXQ305
Low-Voltage Microcontroller with Infrared Module
General Description
The MAXQ305 is a reduced supply voltage, low-power,
16-bit MAXQ^M microcontroller designed for low-power
applications including universal remote controls,
consumer electronics, and white goods. The MAXQ305
combines a powerful 16-bit RISC microcontroller and
integrated peripherals including two USART ports and
a SPI master/slave communications port, along with an
IR module with carrier frequency generation and flexible
port I/O capable of multiplexed keypad control. The
MAXQ305 includes 80KB of flash program memory and
2KB of data SRAM.
The MAXQ305 can run from a low supply input voltage
of 0.9V, allowing the microcontroller to be powered by a
single alkaline AA battery. Code execution can run at up
to a 12MHz rate, or the execution speed may optionally
be decreased to 4MHz (Green Mode) to reduce power
consumption. In this mode, the IR timer and modulator
continue to run at 12MHz for maximum compatibility with
existing IR application code.
For the ultimate in low-power battery-operated
performance, the MAXQ305 includes an ultra-low-power
stop mode (0.4FA, typ). In this mode, the minimum
amount of circuitry is powered. Wake-up sources include
external interrupts, the power-fail interrupt, and the wake-
up timer interrupt.
Applications
Remote Controls
Battery-Powered Portable Equipment
Consumer Electronics
Home Appliances
White Goods
Ordering Information/Selector Guide appears at end of data
sheet.
MAXQ is a registered trademark of Maxim Integrated
Products, Inc.
Features
S High-Performance, Low-Power 16-Bit RISC Core
S 0.9V to 3.6V Operating Voltage Range
S DC to 12MHz for Code Execution in Performance Mode
S 16-Bit Instruction Word, 16-Bit Data Bus
S 16 x 16-Bit General-Purpose Working Registers
S Secure MMU for Application Partitioning and IP
Protection
S Memory Features
 80KB Program Flash Memory
 2KB Data SRAM
S Additional Peripherals
 Power-Fail Warning
 Power-On Reset/Brownout Reset
 Automatic IR Carrier Frequency Generation and
Modulation
 One IR Diode Direct Drive Pin
 Two High Current Visual LED Direct Drive Pins
 Two 16-Bit, Programmable Timers/Counters
 One SPI Port and Two USART Ports
 Programmable Watchdog Timer
 8kHz Nanopower Ring Oscillator Wake-Up Timer
 Up to 32 General-Purpose I/Os
S Low Power Consumption
 0.4µA (typ), 2.0µA (max) in Stop Mode, T_A = +25°C
 1.36mA (typ) in Green Mode (Code Execution at 4MHz)
Block Diagram
MAXQ305
REGULATOR
VOLTAGE
MONITOR
GPIO
16-BIT TIMER
X2
16-BIT MAXQ
RISC CPU
CLOCK
80KB FLASH
MEMORY
WATCHDOG
6KB
UTILITY ROM
8kHz NANO
RING
2KB
DATA SRAM
IR DRIVER
IR TIMER
SPI
USART
x2
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.maximintegrated.com/errata.
For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAXQ305.related
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-6488; Rev 0; 10/12