MAX7  -  系列元器件数据手册
MAXQ7670ATL/V  -  Microcontroller with 10-Bit ADC,PGA, 64KB Flash, and CAN Interface  -  Maxim Integrated Products  -  RISC 16Bit

General Description
The MAXQ7670 is a highly integrated solution for measuring multiple analog signals and outputting the results on a control area network (CAN) bus. The device operates from a single 5V supply and incorporates a highperformance, 16-bit reduced instruction set computing (RISC) core, a SAR ADC, and a CAN 2.0B controller, supporting transfer rates up to 1Mbps. The 10-bit SAR ADC includes an amplifier with programmable gains of 1V/V or 16V/V, 8 input channels, and conversion rates up to 250ksps. The eight single-ended ADC inputs can be configured as four unipolar or bipolar, fully differential inputs. For single-supply operation, the external 5V supply powers the digital I/Os and two separate integrated linear regulators that supply the 2.5V digital core and the 3.3V analog circuitry. Each supply rail has a dedicated power-supply supervisor that provides brownout detection and power-on reset (POR) functions. The 16-bit RISC microcontroller (μC) includes 64KB (32K x 16) of nonvolatile program/data flash and 2KB (1K x 16) of data RAM. Other features of the MAXQ7670 include a 4-wire SPI™ interface, a JTAG interface for in-system programming and debugging, an integrated 15MHz RC oscillator, external crystal oscillator support, a timer/counter with pulse-width modulation (PWM) capability, and seven GPIO pins with interrupt and wake-up capability.
The system-on-a-chip (SoC) MAXQ7670 is a μC-based, smart data acquisition system. As a member of the MAXQ® family of 16-bit, RISC μCs, the MAXQ7670 is ideal for low-cost, low-power, embedded-applications such as automotive, industrial controls, and building automation. The flexible, modular architecture used in the MAXQ μCs allows development of targeted products for specific applications with minimal effort. The MAXQ7670 is available in a 40-pin, 5mm x 5mm TQFN package, and is specified to operate over the -40°C to +125°C automotive temperature range.

Applications
Automotive Steering Angle and Torque Sensors
CAN-Based Automotive Sensor Applications
Industrial Control
Building Automation

Features
 High-Performance, Low-Power, 16-Bit RISC Core
0.166MHz to 16MHz Operation, Approaching
1MIPs/MHz
Low Power (< 1mA/MIPS, VDVDD = +2.5V)
16-Bit Instruction Word, 16-Bit Data Bus
33 Instructions, Most Require Only One Clock
Cycle
16-Level Hardware Stack
16 x 16-Bit, General-Purpose Working Registers
Three Independent Data Pointers with Auto-
Increment/Decrement
Low-Power, Divide-by-256, Power-Management
Modes (PMM) and Stop Mode
 Program and Data Memory
64KB Internal Nonvolatile Program/Data Flash
2KB Internal Data RAM
 SAR ADC
8 Single-Ended/4 Differential Channels,
10-Bit Resolution with No Missing Codes
PGA Gain = 1V/V or 16V/V
250ksps (150.9ksps with PGA Gain = 16V/V)
 Timer/Digital I/O Peripherals
CAN 2.0B Controller (15 Message Centers)
Serial Peripheral Interface (SPI)
JTAG Interface (Extensive Debug and Emulation
Support)
Single 16-Bit/Dual 8-Bit Timer/PWM
Seven General-Purpose, Digital I/O Pins with
External Interrupt/Wake-Up Features
 Oscillator/Clock Module
Internal Oscillator Supports External Crystal
(8MHz or 16MHz)
Integrated 15MHz RC Oscillator
External Clock Source Operation
Programmable Watchdog Timer
 Power-Management Module
Power-On Reset
Power-Supply Supervisor/Brownout Detection
Integrated +2.5V and +3.3V Linear Regulators