Maxim Integrated MAXQ7666 - Manual (Page 7)

SECTION 1: MAXQ7665/MAXQ7666 CORE ARCHITECTURE
1.1 Overview
The MAXQ7665/MAXQ7666 are low-power, high-performance, 16-bit RISC microcontrollers based on the MAXQ® architecture. They
include support for integrated, in-system-programmable flash memory and a wide range of peripherals including a 12-bit 500ksps SAR
ADC with a programmable gain amplifier (PGA) and a full CAN 2.0B controller supporting transfer rates up to 1Mbps. The
MAXQ7665/MAXQ7666 are ideally suited for low-cost, low-power embedded applications such as automotive, industrial controls, and
building automation. Except where explicitly noted, the MAXQ7665 and MAXQ7666 features are identical.
The MAXQ7665/MAXQ7666 key features include:
• 8MHz, 16-bit, single-cycle RISC CPU with Harvard Memory Architecture
• Up to 64k x 16 (128kB) on-chip program flash (16kB program flash and dedicated 256B data flash in MAXQ7666) and 512 bytes
internal RAM
• High-precision, low-power analog input/output module including a 12-bit, 500ksps SAR ADC, 1x–32x PGA, 12-bit DAC and
local/remote temperature sensor
• Full CAN 2.0B controller supporting transfer rates up to 1Mbps
• High-performance timer/digital I/O peripherals
• Flexible crystal/clock module
• Advanced power monitoring/management module
1.1.1 References
The online MAXQ7665 and MAXQ7666 QuickView pages contain additional information and links to the data sheet. Errata sheets for the
MAXQ products are available at
www.maxim-ic.com/errata . For more information on other MAXQ microcontrollers, development hard-
ware and software, frequently asked questions and software examples, visit the MAXQ home page at www.maxim-ic.com/MAXQ . For
general questions and discussion of the MAXQ platform, visit our discussion board at http://discuss.dalsemi.com .
MAXQ7665/MAXQ7666 User’s Guide
1-5
MAXQ is a registered trademark of Maxim Integrated Products, Inc.
Figure 1-1. MAXQ7665/MAXQ7666 Block Diagram
16-BIT HARVARD
MAXQ20 RISC CPU
• 8MHz OPERATION
• SINGLE-CYCLE EXECUTION
• HARVARD ARCHITECTURE
• INTERRUPT CONTROL
• 16-WORD HW STACK
• MMU
MEMORY MODULE
CLOCK/CRYSTAL
MODULE
• INTERNAL OSCILLATOR
• HF EXTERNAL XTAL OSC
• WATCHDOG TIMER
POWER MANAGEMENT
MODULE
• POWER-ON RESET
• I/0 SUPPLY BROWNOUT DETECTOR
• DIGITAL SUPPLY BROWNOUT DETECTOR
• +3.3V LINEAR REGULATOR
PERIPHERAL MODULES
TIMER/DIGITAL I/O
PERIPHERALS
• 3 16-BIT TIMER/PWMs
• 1 8-BIT I/O PORT
• UART AND OPTIONAL SPI
• CAN INTERFACE
• JTAG INTERFACE
• HARDWARE MULTIPLIER
MAXQ7665/MAXQ7666
ANALOG I/0 MODULE
• 8-CHANNEL TRUE-DIFFERENTIAL
MUX
• PGA 1X, 2X, 4X, 8X, 16X, 32X
• 12-BIT, 500ksps SAR ADC
• 12-BIT VDAC
• EXT VOLTAGE REF
• LOCAL TEMP SENSOR
• REMOTE TEMP SENSOR
DATA RAM
256 X 16
(512 BYTES)
PROGRAM FLASH
UP TO 64k X 16
(128kBYTES)
DATA FLASH
256 BYTES
(MAXQ7666 ONLY)
UTILITY ROM
4k X 16
(8kBYTES)
Maxim Integrated