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參數(shù)資料
| 型號： | ST72T85A5Q6 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES |
| 中文描述： | 8位微控制器48,000鐵路發(fā)展策略光盤，3K內(nèi)存，ADC，兩個定時器，2個SPI，I2C和脊髓損傷接口 |
| 文件頁數(shù)： | 5/117頁 |
| 文件大?。?/td> | 748K |
| 代理商： | ST72T85A5Q6 |
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ST7285C
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST7285C HCMOS Microcontroller Unit is a
member of the ST7 family of Microcontrollers ded-
icated to car radio applications with RDS capabili-
ty. The device is based on an industry-standard 8-
bit core and features an enhanced instruction set.
The device is normally operated at an 8.664MHz
oscillator frequency for RDS compatibility but,
thanks to the fully static design, operation is possi-
ble down to DC, when RDS functionality is not re-
quired. Under software control, theST7285C may
be placed in either WAIT, SLOW or HALT modes,
thus reducing power consumption. The enhanced
instruction set and addressing modes afford real
programming potential. In addition to standard 8-
bit data management, theST7285C features true
bit manipulation, 8x8 unsigned multiplication and
indirect addressing modes.
The device includes an on-chip oscillator, CPU,
ROM, RAM, 62 I/O lines and the following on-chip
peripherals: Analog-to-Digital converter (ADC),
two industry standard SPI serial interfaces, a Seri-
al Communications Interface, an I
2
C interface, a
digital Watchdog Timer, two independent 16-bit
Timers, one featuring an External Clock Input, and
both featuring Pulse Generator capabilities, 2 In-
put Captures and 2 Output Compares. RDS Filter,
Demodulator and GBS circuitry for car radio appli-
cations is also included.
NOTE
: FOR THIS DEVICE, SGS-THOMSON
CAN ONLY RECEIVE MOTOROLAS19 FORMAT
FOR ROM CODES.
Figure 1. ST7285C Block Diagram
*On EPROM or OTP versions only.
Power on Reset
PA0 - PA7
Pin 65..72
PB0 - PB7
Pin 73..80
OSCin
OSCout
RESET
V
PP
/ TEST
OSC
8 -BIT CORE
ALU
VR01735P
Internal
CLOCK
A
Timer A
PORT A
PORT B
A/D Converter
8
4
SPI B
PORT C
PC0 - PC7
Pin 5..12
SPI A
PORT D
I
2
C
SCI
8
RAM
3k
RDS
FILTER,DEMOD,GBS
8
8
8
Timer B
4
4
2
PD0 - PD7
Pin 13..20
2
PORT E
PE0 - PE7
Pin 25..32
PF0 - PF7
Pin 33..40
8
PORT F
8
PORT H
PORT G
PH0 - PH5
Pin 53..58
PG0 - PG7
Pin 45..52
6
8
ROM or EPROM*
48k
Watchdog
RDScomp
RDS fil
RDS ref
MPX
ARS
AINT
V
DD
V
SS
V
DDP
V
SSP
V
DDA
V
SSA
2
2
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