19-5231; Rev 2; 1/11
16-Bit Microcontroller with Infrared Module
General Description
Features
S High-Performance, Low-Power, 16-Bit RISC Core
S DC to 12MHz Operation Across Entire Operating Range
S 1.70V to 3.6V Operating Voltage
®
The MAXQ61C is a low-power, 16-bit MAXQ micro-
controller designed for low-power applications including
universal remote controls, consumer electronics, and
white goods. The device combines a powerful 16-bit
RISC microcontroller and integrated peripherals includ-
ing two universal synchronous/asynchronous receiver-
transmitters (USARTs) and an SPI™ master/slave com-
munications port, along with an IR module with carrier
frequency generation and flexible port I/O capable of
multiplexed keypad control.
S 33 Total Instructions for Simplified Programming
S Three Independent Data Pointers Accelerate Data
Movement with Automatic Increment/Decrement
S Dedicated Pointer for Direct Read from Code Space
S 16-Bit Instruction Word, 16-Bit Data Bus
S 16 x 16-Bit General-Purpose Working Registers
The device includes 80KB of ROM memory and 2KB of
data SRAM.
S Memory Features
80KB Application ROM
2KB Data SRAM
For the ultimate in low-power battery-operated perfor-
mance, the device includes an ultra-low-power stop
mode (0.2µA typ). In this mode, the minimum amount of
circuitry is powered. Wake-up sources include external
interrupts, the power-fail interrupt, and a timer interrupt.
The microcontroller runs from a wide 1.70V to 3.6V oper-
ating voltage.
S Additional Peripherals
Power-Fail Warning
Power-On Reset (POR)/Brownout Reset
Automatic IR Carrier Frequency Generation and
Modulation
Two 16-Bit Programmable Timers/Counters with
Prescaler and Capture/Compare
One SPI Port and Two USART Ports
Programmable Watchdog Timer
8kHz Nanopower Ring Oscillator Wake-Up Timer
Up to 32 General-Purpose I/Os (J and X
Versions Only)
Applications
Remote Controls
Battery-Powered Portable Equipment
Consumer Electronics
S Low Power Consumption
Home Appliances
White Goods
0.2µA (typ), 2.0µA (max) in Stop Mode,
T
A
= +25NC, Power-Fail Monitor Disabled
2.0mA (typ) at 12MHz in Active Mode
Ordering Information/Selector Guide
OPERATING
VOLTAGE (V) MEMORY (KB) MEMORY (KB)
PROGRAM
DATA
PART
TEMP RANGE
GPIO
PIN-PACKAGE
MAXQ61CA-xxxx+
MAXQ61CJ-xxxx+
MAXQ61CX-xxxx+
0NC to +70NC
0NC to +70NC
0NC to +70NC
1.7 to 3.6
1.7 to 3.6
1.7 to 3.6
80 ROM
80 ROM
80 ROM
2
2
2
20
32
32
32 TQFN-EP*
44 TQFN-EP*
Bare die
Note: Contact the factory for information about masked ROM devices.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
MAXQ is a registered trademark of Maxim Integrated Products, Inc.
SPI is a trademark of Motorola, Inc.
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.
_______________________________________________________________ Maxim Integrated Products
1
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.