The MAXQ3210 microcontroller is a low-power, 16-bit
RISC device that incorporates a driver for a high-output
piezoelectric horn/transducer, an analog comparator,
and a high-current I/O pin that directly drives an LED.
The device is uniquely suited for cost-conscious applications
such as chemical detectors, alarm systems,
and white goods, but can be used in any application
that requires high-performance and low-power operation.
The high-performance 16-bit RISC core and 8-bit
accumulators are complemented by standard amenities
such as timers and digital I/O. The power consumption
per MIPS ratio is among the best in the 16-bit
microcontroller industry.
The MAXQ3210 is powered directly from a 6V to 9.5V
source, such as a battery, but an internal voltage regulator
operates the core at 5V. The microcontroller also
provides a flag if the input voltage supply falls below
the low-batttery detection threshold (VBF), which can be
used to signal a low-voltage condition of the 9V battery.
The MAXQ3212 is a general-purpose version of the
MAXQ3210 that is powered directly from an external
5.0V supply.
A 1kWord EEPROM program memory stores customer
application code and software algorithms. Software is
programmable in-system by the ROM-based bootloader
and also in-application programmable under
user software control. The device provides 64 bytes of
volatile SRAM and 128 bytes of EEPROM in the data
memory space. Contact Dallas Semiconductor concerning
the availability of ROM-based devices for high-volume,
low-cost applications.
Key Features
Applications/Uses
High-Performance, Low-Power, 16-Bit RISC Core
DC to 3.58MHz Operation, Approaching 1MIPS per MHz
Low-Cost Operation from "Colorburst" Crystal or RC Oscillator
6V to 9.5V External Voltage Supply Operates from Single 9V Battery
5.0V Nominal Internal Operation
Up to 15 General-Purpose I/O Pins
33 Instructions, Most Single-Cycle
Three Independent Data Pointers Accelerate Data Movement with Automatic Increment/Decrement
Two Loop Counters
4-Level Hardware Stack
16-Bit Instruction Word, 16-Bit Data Bus
16 x 8-Bit Accumulators
JTAG Debug/Visibility Port
Program and Data Memory
1kWord EEPROM Program Memory, Mask ROM for High-Volume Applications
128 Bytes EEPROM Data Memory
60,000 EEPROM Write/Erase Cycles
64 Bytes SRAM Data Memory
In-System Programming
Peripheral Features
Piezoelectric Horn Driver
16-Bit Programmable Timer/Counter with Prescaler
High-Current I/O Pin Suitable for LED Drive
Programmable Watchdog Timer
Selectable Power-Fail Reset
Power-On Reset (POR)
Wake-Up Timer
Internal 8kHz Ring Oscillator
Flexible Programming Interface
Integrated Bootloader
In-System/In-Application Programming of EEPROM Through JTAG
Ultra-Low-Power Consumption
< 6mA at 3.58MHz
5.5µA Standby Current (typ)
Low-Power Divide-by-256 Mode
Analog Features
Analog Comparator Uses Internal or External Voltage Reference
+2.5V Reference Output Available
On-Chip Voltage Regulator Supports Up to 9.5V as Power Supply
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