Rainbow-electronics MAXQ7670 User Manual download pdf

General Description

The MAXQ7670 is a highly integrated solution for mea-

suring multiple analog signals and outputting the results

on a control area network (CAN) bus. The device oper-

ates from a single 5V supply and incorporates a high-

performance, 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 sup-

ply 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 detec-

tion and power-on reset (POR) functions. The 16-bit RISC

microcontroller (µC) includes 64KB (32K x 16) of non-

volatile 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 program-

ming and debugging, an integrated 15MHz RC oscilla-

tor, 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 prod-

ucts 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, V

DVDD

= +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

MAXQ7670

Microcontroller with 10-Bit ADC,

PGA, 64KB Flash, and CAN Interface

________________________________________________________________

Maxim Integrated Products

19-4384; Rev 0; 11/08

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.

Typical Application Circuit and Pin Configuration appear at

end of data sheet.

SPI is a trademark of Motorola, Inc.

MAXQ is a registered trademark of Maxim Integrated Products, Inc.

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAXQ7670ATL+

-40°C to +125°C

40 TQFN-EP*

Denotes a lead-free/RoHS-compliant package.

EP = Exposed pad.

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:

http://www.maxim-ic.com/errata

1 2 3 4 5 6 ... 36 37

MAXQ7670 1

Summary of Contents

Page 1 - MAXQ7670

General DescriptionThe MAXQ7670 is a highly integrated solution for mea-suring multiple analog signals and outputting the resultson a control area net

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MAXQ7670Microcontroller with 10-Bit ADC,PGA, 64KB Flash, and CAN InterfaceMaxim cannot assume responsibility for use of any circuitry other than circu

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Rainbow-electronics MAXQ7670 User Manual

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