ST72734 datasheet(6/144 Pages) STMICROELECTRONICS

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ST72774/ST727754/ST72734

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1 GENERAL DESCRIPTION

1.1 INTRODUCTION

The

ST72774,

ST72754

and

ST72734

are

HCMOS microcontroller units (MCU) from the

ST727x4 family with dedicated peripherals for

Monitor applications.

They are based around an industry standard 8-bit

core and offer an enhanced instruction set. The

processor runs with an external clock at 12 or 24

MHz with a 5V supply. Due to the fully static design

of this device, operation down to DC is possible.

Under software control the ST727x4 can be placed

in WAIT mode thus reducing power consumption.

The HALT mode is no longer available.

The enhanced instruction set and addressing

modes afford real programming potential. Illegal

opcodes are patched and lead to a reset.

In addition to standard 8-bit data management the

ST7 features true bit manipulation, 8x8 unsigned

multiplication and indirect addressing modes.

The device includes an on-chip oscillator, CPU,

System protection against illegal address jumps,

Sync Processor for video timing & Vfback analysis,

up to 60K Program Memory, up to 1K RAM, USB/

DMA, a Timing Measurement Unit, I/O, a timer with

2 input captures and 2 output compares, a 4-

channel Analog to Digital Converter, DDC, I2C

Single Master, Watchdog Reset, and eight 10-bit

PWM/BRM outputs for analog DC control of

external functions.

Figure 1. ST727x4 Block Diagram

VSS

OSCIN

OSCOUT

RESET

ADC

DDC

PORT C

PORT D

DAC (PWM)

OSC

VDD

RAM

PORT B

PORT A

PA1

PB6-PB7/AIN2-AIN3/PWM1-PWM2

PB3/SDAI

PB2/SCLI

PB1/SDAD

PB0/SCLD

PC1/AV

PD6/CLAMPOUT

POWER SUPPLY

PB4-PB5/AIN0-AIN1

8-BIT CORE

ALU

CONTROL

WATCHDOG

Mode

Selection

ROM/OTP/EPROM

Up to 60K Bytes

Up to 1K Bytes

HSYNCI

VSYNCI

I2C

USBVCC

SYNC

PROCESSOR

PC0/HSYNCDIV

PC2-PC7/PWM3-PWM8

PA2/VSYNCI2

TIMER

PA0/OCMP1

TMU

PD1/HSYNCO

PD3/ITA/VFBACK

PD4/ITB

PD5/HFBACK

PD0/VSYNCO

PD2/CSYNCI

USB

USBDP

USBDM

PA3-PA6

PA7/BLANKOUT

ST72734 数据表(PDF) 6 Page - STMicroelectronics

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