Datasheet ST72T752J6B1, ST72E752J6D1, ST72752J6, ST72752J5, ST72752J4 Datasheet (SGS Thomson Microelectronics)

R

ST72752

8-BIT MCU FOR MONITORS WITH UP T O 32K ROM, 1K RAM, ADC,

2

TIMER, SYNC, PWM/BRM, DDC/DMA & I

■

User ROM/OTP/EPROM: up to 32 Kbytes

■

Data RAM: up to 1 Kbytes (256 bytes stack)

■

8 MHz Maximum Internal Clock Frequency in
fast mode, 4 MHz in normal mode

■

Run, Wait and Halt CPU modes

■

Sync Processor for Mode Recognition, power
management and composite video blanking,
clamping and free-running frequency
generation.

– Corrector mode
– Analyzer mode

■

Fast I2C Multi Master Interface

■

DDC Bus Interface fully compliant with DDC1,
2B, 2B+, 2AB, 2Bi standards

■

23 I/O lines
– 1 high current I/O (10 mA)
– Up to 5 high voltage outputs (9V)

■

16-bit timer with 2 in put captures an d 2 output
compare functions (with 1 output pin)

■

8-bit Analog to Digital Converter with 4
channels on port B

■

8 10-bit PWM/BRM Digital to Analog outputs

■

One 12-bit PWM/BRM Digital to Analog output

■

Master Reset and Power on/off reset1

■

Programmable Watchdog for system reliability

■

42-pin Shrink Dual In line Plastic package

■

Fully static operation

■

0 to + 70 oC Operating Temperature Range

■

4.0V to 5.5V supply operating range

■

24 MHz Quartz Oscillator

■

63 basic instructions/17 main address modes

■

8x8 unsigned multiply instruction

■

True bit manipulation

■

Versatile Development Tools (DOS and
Windows) including assembler, linker, C­compiler, archiver, source level debugger,
programmer, and hardware emulator

BRIEF DATA

PSDIP42

See Ordering Information at the end of the Document

Device Summary

Features ST72752J6 ST72752J5 ST72752J4

ROM
(bytes)

RAM
(bytes)

ADC 4 channels
Timer 1

2

I

C Bus one multimaster
DDC/DMA yes
Sync yes
PWM 9
I/O 23
EPROM

Device
OTP

Device

32K 24K 16K

1K 768 512

ST72E752J6D1

ST72T752J6B1

C

Note 1

: Power On/Off reset not implemented in

this revision.

April 1998 1/3

This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without noti ce.

1

ST72752

1 GENERAL DESCRIPTION

1.1 INTRODUCTION

The ST72752 is a HCMOS microcontroller unit
(MCU) from the ST7 family with dedicated periph­erals for Monitor applications.
It is based around an indu stry standard 8-bi t core
and offers an enhanced i nstruction set. The proc­essor runs with an external clock at 24 MHz with
a 5V supply. Due to the fully static de sign of this
device, operation down to DC is possible. Under
software control the ST72752 can be placed in
WAIT or HALT mode thus reducing power con­sumption. The enhanced instruction set and ad­dressing modes afford real programming potential.

Figure 1. .ST72752 Block Diagram

PORT A

1K Bytes

A

Y

X

C
C

INTERNAL

CLOCK

PORT B

S
E
S
U
B

A
T
A
D

/
S

S
E
R
D
D
A

PORT C

PORT C

TIMER

WATCHDOG

SYNC

PROCES SOR

PORT D

PWM/BRM

Up to

CONTROL

8-BIT CORE

POWER ON/OFF

POWER

SUPPLY

32K Bytes

ROM/

EPROM/OTP

Up to

RAM

DDC DMA

ALU

L

H

C

C

P

P

P

S

OSC /3 or 6

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,
Sync Processor for video timing & Vfbac k analy­sis, up to 32K ROM, up to 1K RAM, I/O, a timer
with 2 input captures and 2 o utput compares , a 4­channel Analog to Digital Converter, DDC/DMA,

2

C multi Master, Watchdog Reset, and one 12-bit

I
and eight 10-bit PWM/BRM outputs for analog DC
control of external functions.

PA1(HV)
PA3..6(HV)
PA7/BLANKOUT

V

DDA

V

SSA

ADC

I²C

DDC

AIN 0..2, AIN7

SCLD

SDAD

OCMP

C
N

C

Y

N

S

Y

C

/

S
V

H

I
C
N
Y
S
C

PB7/AIN7

PB1..2/ AI N1 ..2
PB0

/

VFBACK/AIN0

VFBACK

I

I

A

L
D
S

O

O

C

C

N

N

Y

Y

S

S
V

H

PC6 (HC)

C

S

PC5/SDAI
PC4/SCLI
PC3/SDAD
PC2/RX/SCLD
PC0/OCMP/HFBACK

RESET

K

C

A

B

F

H

VSYNCI
HSYNCI

T
U

PD6/CLAMPOUT

O

PD5/ITA

P
M

PD4/ITB

A
L

PD3/ITC

C

PD2/VSYNCO
PD1/HSYNCO
PD0/CSYNCI

DA0
DA1,DA8

2/3

V

V

DD

SS

OSCOUTOSCIN

VR01735R

Notes:

ST72752

Information fu rnishe d is be lieved to be acc urate an d re liable . H oweve r, S GS-T HOM SON Mic roelec tronic s a ssum es no
responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights
of SGS-THOMS ON Micro electr onics . Sp ecifica tions mentione d in this pub licatio n are sub ject to c hang e wit hout notic e.
This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products
are not authorized for use as critical components in life support devices or systems without the express written approval
of SGS-THOMSON Microelectronics.



2

Purchase of I

components in an I

Australi a - Brazil - Ca nada - China - France - Germ any - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherla nds - Singapore

C Components by SGS-THOMSON Microelectronics conveys a license under the Philips I2C Patent. Rights to use these

2

C system is granted pr ovided that the system c onforms to th e I2C Standard Specification as defined by Philips.

1998 SGS-THOMSON Microe l e ctronics - All Ri ghts Reserved.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

Spain - Sweden - Swi t zerland - Tai wan - Thail and - Unite d Kingdom - U. S.A.

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