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PDF CXP87452 Data sheet ( Hoja de datos )
| Número de pieza | CXP87452 | |
| Descripción | CMOS 8-bit Single Chip Microcomputer | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXP87452/87460
CMOS 8-bit Single Chip Microcomputer
Description
The CXP87452/87460 is a CMOS 8-bit micro-
computer which consists of A/D converter, serial
interface (2ch independently), timer/counter, time
base timer, vector interruption, high precision timing
pattern generation circuit (PPG 2ch independently,
RTG 2ch independently), PWM generator, general
purpose prescaler, PWM for tuner, VCR vertical
sync separation circuit and the measuring circuit
which measure signals of capstan FG and drum
FG/PG and other servo systems, as well as basic
configurations like 8-bit CPU, ROM, RAM and I/O
port. They are integrated into a single chip.
Also CXP87452/87460 provides power on reset
function, sleep/stop function which enables to lower
power consumption .
100 pin QFP (PIastic)
Structure
Silicon gate CMOS IC
100 pin LQFP (PIastic)
Features
• A wide instruction set (213 instructions) which cover various types of data
— 16-bit arithmetic instruction/multiplication and division instructions/boolean bit operation instruction
• Minimum instruction cycle
During operation 333ns/12MHz (3.0 to 5.5V)
During operation 250ns/16MHz (4.5 to 5.5V)
• Incorporated ROM capacity 52K bytes (CXP87452)
60K bytes (CXP87460)
• Incorporated RAM capacity 1568 bytes
• Peripheral functions
— A/D converter
8-bit, 12-channel, successive approximation system
(Conversion time: 20µs/16MHz)
— Serial interface
Incorporated buffer RAM (1 to 32 bytes auto transfer) 1-channel
Incorporated 8-bit and 8-stage FIFO
(1 to 8 bytes auto transfer) 1-channel
— Timer
8-bit timer, 8-bit timer/counter, 19-bit time base timer
— High precision timing pattern generator PPG 19 pins 32-stage programmable
PPG 10 pins 21-stage programmable
RTG 5 pins 2-channel
— PWM/DA gate output
PWM 12-bit, 2-channel (Repetitive frequency 62.5kHz/16MHz)
DA gate pulse 12-bit, 4-channel
— Servo input control
Capstan FG, Drum FG/PG, CTL input
— VSYNC separator
— FRC capture unit
Incorporated 26-bit and 8-stage FIFO
— PWM output
14-bit, 1-channel
— General purpose prescaler
10-bit (System clock asynchronous)
— Pulse cycle measurement circuit
• Interruption
18 factors, 14 vectors, multi-interruption possible
• Standby mode
SLEEP/STOP
• Package
100-pin plastic QFP/LQFP
• Piggyback/evaluation chip
CXP87400 100-pin ceramic QFP/LQFP
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E95111-PS
1 page  
CXP87452/87460
Pin Description
Symbol
I/O
Description
PA0/PPO000
/PPO100
to
PA7/PPO007
/PPO107
Output/
Real time
output
PB0/PPO008
to
PB7/PPO015
Output/
Real time
output
(Port A)
8-bit output port. Data is gated
with PPO0 and PPO1 contents
by OR-gate and they are output.
(8 pins)
Programmable pattern generator
(Port B)
(PPG0, PPG1) output.
8-bit output port. Data is gated Functions as high precision real time
with PPO0 and PPO1 contents pulse output port.
( )by OR-gate and they are output.
(8 pins)
PPG0 19 pins
PPG1 10 pins
PC0/PPO016 I/O/
to Real time
PC2/PPO018 output
PC3/RTO3
to
PC7/RTO7
I/O/
Real time
output
(Port C)
8-bit I/O port. Enables to
specify I/O by bit unit.
Data is gated with PPO or
RTO contents by OR-gate
and they are output.
(8 pins)
Real time pulse generator (RTG) output.
Functions as high precision real time
pulse output port. (5 pins)
PD0 to PD7 I/O
(Port D)
8-bit I/O port. Enable to specify I/O by 4-bit unit.
Enables to drive 12mA sinc current. (During 5V ± 0.5V operation)
(8 pins)
PE0/INT0
/XOUT
Input/input/output
Input pin to request
1/2 dividing clock
external interruption. output of XTAL
Active when falling edge. or OSCO.
PE1/EC/INT2 Input/input/input
PE2/PWM0
PE3/PWM1
PE4/DAA0
Output/output
Output/output
Output/output
(Port E)
8-bit port. Lower 2 bits are
input port and upper 6 bits
are output port.
(8 pins)
External event Input pin to request
input pin for external interruption.
timer/counter. Active when falling edge.
PWM output pins.
(2 pins)
PE5/DAA1
PE6/DAB0
PE7/DAB1
Output/output
Output/output
Output/output
DA gate pulse output pins.
(4 pins)
AN0 to AN3
PF0/AN4
to
PF3/AN7
PF4/AN8
to
PF7/AN11
Input
Input/input
Output/input
Analog input pins to A/D converter. (12 pins)
(Port F)
Lower 4 bits are input port and upper 4 bits are output port.
Lower 4 bits also serve as standby release input pin.
(8 pins)
SCK0
SO0
SI0
CS0
I/O
Ouput
Input
Input
Serial clock (CH0) I/O pin.
Serial data (CH0) output pin.
Serial data (CH0) input pin.
Serial chip select (CH0) input pin.
–5–
5 Page 
CXP87452/87460
Pin
PI1/PO
PI2/PWM
PI3/TO
3 pins
Circuit format
Port I
Port I
function select
PI1: From general purpose prescaler
PI2: From 14-bit PWM
PI3: From timer/counter
Port I data
MPX
Port I direction
Data bus
Port I
RD (Port I)
Port I data
IP
PI4/INT1
PI7/SI1
2 pins
PI5/SCK1
PI6/SO1
2 pins
PJ0
to
PJ7
8 pins
Port I direction
Data bus
RD (Port I)
PI4: To interruption circuit
PI7: To serial CH1
IP
Schmitt input
Port I
Port I
function select
From serial CH1
Port I data
Port I direction
Data bus
RD (Port I)
MPX
MPX
Note)
PI5 is schmitt input
PI6 is inverter input
To serial CH1
IP
Port J
Port J data
Port J direction
Data bus
RD
(Port J)
Standby release
Edge detection
IP
When reset
Hi-Z
Hi-Z
Hi-Z
Hi-Z
– 11 –
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CXP87452.PDF ] | |
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