MAXQ610 Maxim, MAXQ610 Datasheet - Page 11

• Manufacturer Part Number: MAXQ610
• Description: The MAXQ610 is a low-power, 16-bit MAXQ® microcontroller designed for low-power applications including universal remote controls, consumer electronics, and white goods
• Manufacturer: Maxim

The MAXQ610 microcontroller provides integrated, low-
cost solutions that simplify the design of IR communica-
tions equipment such as universal remote controls.
Standard features include the highly optimized, single-
cycle, MAXQ 16-bit RISC core, 64KB of flash memory,
2KB data RAM, a soft stack, 16 general-purpose regis-
ters, and three data pointers. The MAXQ core offers the
industry’s best MIPS/mA rating, allowing developers to
achieve the same performance as competing micro-
controllers at substantially lower clock rates. Combining
lower active-mode current with the MAXQ610 stop-
mode current (0.2µA typical) results in increased bat-
tery life. Application-specific peripherals include
flexible timers for generating IR carrier frequencies and
modulation, a high-current IR drive pin capable of sink-
ing up to 25mA current, and output pins capable of
sinking up to 5mA ideal for IR applications, general-
purpose I/O pins ideal for keypad matrix input, and a
power-fail-detection circuit to notify the application
when the supply voltage is nearing the minimum oper-
ating voltage of the microcontroller.
At the heart of the MAXQ610 is the MAXQ 16-bit RISC
core. The MAXQ610 operates from DC to 12MHz and
almost all instructions execute in a single clock cycle
(83.3ns at 12MHz), enabling nearly 12MIPS true code
operation. When active device operation is not
required, an ultra-low-power stop mode can be invoked
from software resulting in quiescent current consump-
tion of less than 0.2µA typical and 2.0µA maximum. The
combination of high-performance instructions and ultra-
low stop-mode current increases battery life over com-
16-BIT TIMER
REGULATOR
MONITOR
VOLTAGE
GPIO
16-Bit Microcontroller with Infrared Module
______________________________________________________________________________________
16-BIT TIMER
WATCHDOG
4KB ROM
CLOCK
Detailed Description
16-BIT MAXQ
MAXQ610
RISC CPU
SECURE MMU
64KB FLASH
8kHz NANO
2KB SRAM
RING
Block Diagram
IR DRIVER
IR TIMER
USART0
USART1
SPI
peting microcontrollers. An integrated POR circuit with
brownout support resets the device to a known condi-
tion following a power-up cycle or brownout condition.
Additionally, a power-fail warning flag is set and a
power-fail interrupt can be generated when the system
voltage falls below the power-fail warning voltage,
V
cation to notify the user that the system supply is low
and appropriate action should be taken.
The MAXQ610 is based on Maxim’s MAXQ core. The
MAXQ is a low-power implementation of the new 16-bit
MAXQ family of RISC cores. The core supports the
Harvard memory architecture with separate 16-bit pro-
gram and data address buses. A fixed 16-bit instruction
word is standard, but data can be arranged in 8 or 16
bits. The MAXQ core in the MAXQ610 family is imple-
mented as a pipelined processor with performance
approaching 1MIPS per MHz. The 16-bit data path is
implemented around register modules, and each regis-
ter module contributes specific functions to the core.
The accumulator module consists of sixteen 16-bit regis-
ters and is tightly coupled with the arithmetic logic unit
(ALU). A configurable soft stack supports program flow.
Execution of instructions is triggered by data transfer
between functional register modules or between a func-
tional register module and memory. Because data
movement involves only source and destination mod-
ules, circuit-switching activities are limited to active
modules only. For power-conscious applications, this
approach localizes power dissipation and minimizes
switching noise. The modular architecture also provides
a maximum of flexibility and reusability that is important
for a microprocessor used in embedded applications.
The MAXQ instruction set is highly orthogonal. All arith-
metical and logical operations can use any register in
conjunction with the accumulator. Data movement is
supported from any register to any other register.
Memory is accessed through specific data-pointer reg-
isters with automatic increment/decrement support.
The MAXQ610 incorporates several memory types that
include the following:
• 64KB program flash
• 2KB SRAM data memory
• 5.25KB utility ROM
• Soft stack
PFW
. The power-fail warning feature allows the appli-
Microprocessor
Memory
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