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ST7275-1 Datasheet(HTML) 2 Page - STMicroelectronics

Part No. ST7275-1
Description  8-BIT, 56-PIN MCU FOR MONITORS, WITH UP TO 60K ROM, 2K RAM, ADC, TIMER, IR, SYNC, PWM/BRM, DDC/DMA, I2C & SCI
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST7275-1 Datasheet(HTML) 2 Page - STMicroelectronics

   
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ST7275-1
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST7275 is a HCMOS microcontroller unit
(MCU) from the ST7 family with dedicated periph-
erals for Monitor applications.
It is based around an industry standard 8-bit core
and offers an enhanced instruction set. The proc-
essor runs with an external clock at 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 ST7275 can be placed in
WAIT or HALT mode thus reducing power con-
sumption. The enhanced instruction set and ad-
dressing modes afford real programming potential.
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 & Vfback analy-
sis, up to 60K ROM, up to 2K RAM, I/O, a timer
with 2 input captures and 2 output compares, an 8-
channel Analog to Digital Converter, DDC/DMA,
I
2C multi Master, SCI Serial Communications In-
terface, Watchdog Reset, an Infra Red Control
preprocessor, and one 12-bit and eight 10-bit
PWM/BRM outputs for analog DC control of exter-
nal functions.
Figure 1. ST7275-1 Block Diagram
SYNC
PROCESSOR
POWER
SU PPLY
OSC /3 or 6
VDD
POR T A
PORT C
DDC
TIM ER
WATCHDOG
PORT D
OCMP
PWM/BRM
PORT B
ADC
A IN 0-A IN7
DA0
60K Bytes
RAM
2K Bytes
CONTROL
8-BIT CORE
ALU
INTERNAL
CLOC K
VSS
OSCOUT
OSCIN
DA1,DA8
DDC DM A
PORT C
SCLD
SDAD
I²C
INFRA RED
SC I
(UART)
VR01735Q
PA0..6
PA7/BLANKOUT
VDD A
VSS A
PC3/SDAD
PC2/RX/SCLD
PC0/OCMP/HFBACK
RESET
HSYNCI1
VSYNCI1
PB1..7/AIN1..7
VFBACK/AIN0
PC1/HSYNCI2
PC4/SCLI
PC5/SDAI
PC6/RDI
PC7/TDO
IRIN
POWER ON/OFF
TDO
ROM/
Up to
Up to
PB0/
PD0/CSYNCI
PD1/HSYNCO
PD2/VSYNCO
PD3/ITC
PD4/ITB
PD5/ITA
PD6/CLAMPOUT
PD7/VSYNCI2/ITD
OTP/EPROM


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