Sony CXP842P24 Datasheet

CMOS 8-bit Single Chip Microcomputer

Description

The CXP842P24 is a CMOS 8-bit single chip
microcomputer integrating on a single chip an A/D
converter, serial interface, timer/counter, time base
timer, capture timer/counter, and remote control
reception circuit besides the basic configurations of
8-bit CPU, ROM, RAM, and I/O port.

The CXP842P24 also provides a power-on reset
function and a sleep/stop function that enables lower
power consumption.

This IC is the PROM-incorporated version of the
CXP84224 with built-in mask ROM. This provides the
additional feature of being able to write directly into
the program. Thus, it is most suitable for evaluation
use during system development and for small-quantity
production.

Features

• Wide-range instruction system (213 instructions) to cover various types of data

— 16-bit arithmetic/multiplication and division/boolean bit operation instructions

• Minimum instruction cycle 400ns at 10MHz operation

• Incorporated PROM capacity 24K bytes

• Incorporated RAM capacity 624 bytes

• Peripheral functions

— A/D converter 8 bits, 8 channels, successive approximation method

(Conversion time of 32µs/10MHz)

— Serial interface Incorporated 8-bit, 8-stage FIFO

(Auto transfer for 1 to 8 bytes), 1 channel
8-bit clock synchronization, 1 channel

— Timer 8-bit timer

8-bit timer/counter
19-bit time base timer

16-bit capture timer/counter
— Remote control reception circuit 8-bit pulse measuring counter, 6-stage FIFO
— PWM output 14 bits, 1 channel

• Interruption 14 factors, 14 vectors, multi-interruption possible

• Standby mode Sleep/stop

• Package 64-pin plastic SDIP

– 1 –

E93839A7X-PS

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.

CXP842P24

64 pin SDIP (Plastic)

Structure

Silicon gate CMOS IC

– 2 –

CXP842P24

8

2

2

2

2

PA0/AN0

to

PA7/AN7

PE4/PWM

PE2/RMC

PB1/CS0

PB3/SI0

PB4/SO0

PB2/SCK0

PB6/SI1

PB7/SO1

PB5/SCK1

PE5/TO

PB0/CINT

PE1/EC1

PE0/EC0

A/D CONVERTER

AVss

AV

REF

14 BIT PWM GENERATOR

REMOCON

FIFO

SERIAL

INTERFACE

UNIT 0

FIFO

SERIAL INTERFACE UNIT 1

8 BIT TIMER/COUNTER 0

8 BIT TIMER 1

16 BIT CAPTURE

TIMER/COUNTER 2

INTERRUPT CONTROLLER

PI0/INT0

PI1/INT1

PI2/INT2

PI3/INT3

PE3/NMI

SPC700

CPU CORE

PROM

24K BYTES

CLOCK GEN./

SYSTEM CONTROL

RAM

624 BYTES

PRESCALER/

TIME BASE TIMER

EXTAL

XTAL

V

DD

Vss

PORT A

7

8

8

4

2

7

PA0 to PA7

PB0 to PB6

PB7

PC0 to PC7

PD0 to PD7

PE0 to PE3

PE4 to PE5

PF0 to PF7

PG0 to PG2

PI0 to PI6

RST

8

8

3

PORT B

PORT C

PORT D

PORT E

PORT F

PORT G

PORT I

Vpp

Block Diagram

– 3 –

CXP842P24

Pin Assignment (Top View)

2
3
4

5
6
7
8
9

10

11
12
13
14
15
16
17
18
19

20
21
22

23
24
25

26
27
28

29

30
31

32

1

40
39
38
37
36
35
34
33

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

63

64

61

62

Vpp
PG0
PG1
PG2

PF0

PF1

PF2

PF3

PF4

PF5

PF6

PF7
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
RST

XTAL

EXTAL

Vss

VDD
PI6
PI5
PI4
PI3/INT3

AV

REF

AVss

PI2/INT2
PI1/INT1
PI0/INT0
PE5/TO
PE4/PWM
PE3/NMI
PE2/RMC

PE1/EC1
PE0/EC0

PB7/SO1
PB6/SI1

PB5/SCK1
PB4/SO0
PB3/SI0
PB2/SCK0

PB1/CS0
PB0/CINT

PA7/AN7
PA6/AN6
PA5/AN5

PA4/AN4
PA3/AN3

PA2/AN2
PA1/AN1

PA0/AN0

Note) Vpp (Pin 1) is always connected to VDD.

– 4 –

CXP842P24

Pin Description

Symbol I/O Description

I/O/Analog input

PA0/AN0

to

PA7/AN7

(Port A)
8-bit I/O port. I/O can be
set in a unit of single bits.
Incorporation of the
pull-up resistance can be
set through the software
in a unit of 4 bits.
(8 pins)

Analog inputs to A/D converter.
(8 pins)

I/OPC0 to PC7

(Port C)
8-bit I/O port. I/O can be set in a unit of single bits. Capable of driving
12mA sink current. Incorporation of pull-up resistor can be set through
the software in a unit of 4 bits.
(8 pins)

I/OPD0 to PD7

(Port D)
8-bit I/O port. I/O can be set in a unit of single bits. Incorporation of pull­up resistor can be set through the software in a unit of 4 bits.
(8 pins)

I/OPF0 to PF7

(Port F)
8-bit I/O port. I/O can be set in a unit of single bits. Incorporation of
pull-up resistor can be set through the software in a unit of 4 bits.
(8 pins)

Input/Input
Input/Input
Input/Input
Input/Input
Output/Output

Output/Output

PE0/EC0
PE1/EC1
PE2/RMC
PE3/NMI
PE4/PWM

PE5/TO

(Port E)
6-bit port. Lower 4 bits
are for inputs; upper
2 bits are for outputs.
Incorporation of pull-up
resistor can be set
through the software.
(6 pins)

External event inputs for timer/counter.
(2 pins)

Remote control reception circuit input.
Non-maskable interruption request input.
14-bit PWM output.
Rectangular wave output for 16-bit

timer/counter (duty output 50%).

I/O/Input
I/O/Input
I/O/I/O
I/O/Input
I/O/Output
I/O/I/O
I/O/Input
Output/Output

PB0/CINT
PB1/CS0
PB2/SCK0
PB3/SI0
PB4/SO0
PB5/SCK1
PB6/SI1
PB7/SO1

(Port B)
Lower 7-bit I/O port in
which I/O can be set in a
unit of single bits. Also,
an uppermost bit (PB7)
exclusively for output.
Incorporation of pull-up
resistor can be set
through the software in a
unit of 4 bits.
(8 pins)

External capture input to 16-bit timer/counter.
Chip select input for serial interface (CH0).
Serial clock I/O (CH0).
Serial data input (CH0).
Serial data output (CH0).
Serial clock I/O (CH1).
Serial data input (CH1).
Serial data output (CH1).

– 5 –

CXP842P24

Symbol I/O Description

I/OPG0 to PG2

(Port G)
8-bit I/O port. I/O can be set in a unit of single bits. Incorporation of pull­up resistor can be set through the software in a unit of 4 bits.
(3 pins)

I/O/Input

PI0/INT0

to

PI3/INT3

I/O

PI4 to PI6

Input

Crystal connectors for system clock oscillation. When the clock is supplied
externally, input to EXTAL; opposite phase clock should be input to XTAL.

EXTAL

Output

XTAL

I/O Low-level active, system reset.

RST

Input Reference voltage input for A/D converter.

AVREF

A/D converter GND.

AVss

Positive power supply.

VDD

Positive power supply for incorporated PROM writing.
Connect to VDD during normal operation.

Vpp

GND

Vss

(Port I)
7-bit I/O ports. I/O can be set in a unit of single
bits. Incorporation of pull-up resistor can be set
through the software in a unit of 4 bits.
(7 pins)

External interruption
request inputs.

– 6 –

CXP842P24

Port B

Data bus

RD (Port B)

Port B direction

IP

Port B data

Pull-up resistance

"0" when reset

"0" when reset

∗

Pull-up transistors

approx. 10kΩ

∗

Schmitt input

CINT
CS0
SI0
SI1

8 pins

Hi-Z

Hi-Z

When reset

PA0/AN0

to

PA7/AN7

PB0/CINT
PB1/CS0
PB3/SI0
PB6/SI1

Port B

4 pins

2 pins

Hi-Z

PB2/SCK0
PB5/SCK1

Data bus

RD (Port A)

Port A direction

IP

Port A data

Pull-up resistance

Port A input
selection

Input protection
circuit

"0" when reset

"0" when reset

"0" when reset

Input multiplexer

A/D converter

∗

Pull-up transistors

approx. 10kΩ

∗

Input/Output Circuit Formats for Pins

Port A

Pin

Circuit format

Data bus

RD (Port B)

IP

Port B output
selection

"0" when reset

∗

Pull-up transistors

approx. 10kΩ

∗

Schmitt input

SCK in

Port B data

Port B direction

"0" when reset

Pull-up resistance

"0" when reset

SCK OUT

Output enable