Sony CXP81724B, CXP81720B Datasheet

CXP81720B/81724B

CMOS 8-bit Single Chip Microcomputer

Description

The CXP81720B/81724B is a CMOS 8-bit micro­computer which consists of A/D converter, serial
interface, timer/counter, time-base timer, high­precision timing pattern generation circuit, PWM
output, 32kHz timer/counter, remote control reception
circuit, as well as basic configurations like 8-bit CPU,
ROM, RAM and I/O port. They are integrated into a
single chip.

Also CXP81720B/81724B provides sleep/stop
functions which enables to lower power consumption.

Features

• A wide instruction set (213 instructions) which covers various types of data

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

• Minimum instruction cycle 250ns at 16MHz operation (4.5 to 5.5V)

122µs at 32kHz operation (2.7 to 5.5V)

• Incorporated ROM capacity 20K bytes (CXP81720B)

24K bytes (CXP81724B)

• Incorporated RAM capacity 800 bytes

• Peripheral functions

— A/D converter 8 bits, 12 channels, successive approximation method

(Conversion time of 20.0µs at 16MHz)

— Serial interface Incorporated 8-bit and 8-stage FIFO, 1 channel

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

— Timer 8-bit timer, 8-bit timer/counter, 19-bit time-base timer

32kHz timer/counter

— High-precision timing pattern generator PPG: maximum of 19 pins, 32 stages programmable

RTG: 5 pins, 2 channels

— PWM/DA gate output PWM: 12 bits, 2 channels (Repetitive frequency 62kHz/16MHz)

DA gate pulse output: 12 bits, 4 channels
— FRC capture unit Incorporated 26-bit and 8-stage FIFO
— PWM output 14 bits, 1 channel
— Remote control reception circuit 8-bit pulse measuring counter, 6-stage FIFO

• Interruption 20 factors, 15 vectors, multi-interruption possible

• Standby mode Sleep/stop

• Package 100-pin plastic QFP/LQFP

• Piggyback/evaluator CXP81800

100 pin QFP (PIastic) 100 pin LQFP (PIastic)

Structure

Silicon gate CMOS IC

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 –

E97737-PS

CXP81720B/81724B

Vss
V

DD

MP
RST

XTAL
EXTAL

TX
TEX

PA0 to PA7

PB0 to PB7

PC0 to PC7

8

PORT A8PORT B8PORT C

CLOCK

GENERATOR/

SYSTEM CONTROL

SPC700

CPU CORE

PD0 to PD7
8

PORT D

RAM

800 BYTES

ROM

20K/24K BYTES

PE0 to PE1

PE2 to PE7

2

6

PORT E

PF4 to PF7

PF0 to PF3

4

PG0 to PG7

PH0 to PH7

4

PORT F8PORT G8PORT H7PORT I

32kHz

PRESCALER/

TIME BASE TIMER

TIMER/COUNTER

FIFO

2

PI1 to PI7

PULSE

REALTIME

GENERATOR

RAM

PJ0 to PJ7

8

PORT J

CH1

5

CH0

19

RTO3/RTO7

PPO0/PPO18

INT2
INT1/NMI
INT0

AVss

AV

REF

AV

DD

NMI

2

A/D CONVERTER

12

CS0

FIFO

(CH0)

SERIAL

INTERFACE UNIT

SI0

SO0

SCK0

INTERRUPT CONTROLLER

2

(CH1)

8 BIT TIMER 1

SERIAL INTERFACE UNIT

SI1

SO1

SCK1

8 BIT TIMER/COUNTER 0

EC

TO

EXI0

FRC

CAPTURE UNIT

2

FIFO

REMOCON INPUT

EXI1

RMC

PATTERN

GENERATOR

PROGRAMMABLE

4

2

14 BIT PWM GENERATOR

PWM

PWM0

12 BIT PWM GENERATOR CH1

12 BIT PWM GENERATOR CH0

DAA1

DAB0

DAA0

PWM1

DAB1

ADJ

Block Diagram

AN0 to AN11

– 2 –

Pin Assignment (Top View) 100-pin QFP package

PA5/PPO5

PA4/PPO4

PA3/PPO3

PA2/PPO2

PA1/PPO1

PA0/PPO0

PB7/PPO15

PB6/PPO14

NC

PA7/PPO7

PA6/PPO6

CXP81720B/81724B

SS

DD

V

TX

V

TEX

PI2/PWM

PI1/RMC

PI5/SCK1

PI4/INT1/NMI

PI3/TO/ADJ

PB5/PPO13
PB4/PPO12
PB3/PPO11
PB2/PPO10

PB1/PPO9
PB0/PPO8
PC7/RTO7
PC6/RTO6
PC5/RTO5
PC4/RTO4

PC3/RTO3
PC2/PPO18
PC1/PPO17
PC0/PPO16

PJ7
PJ6
PJ5
PJ4
PJ3
PJ2
PJ1

PJ0
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0

10

12
13
14
15
16
17

19

25

29
30

11

18

20
21
22
23
24

26
27
28

100

99

98

1

2
3
4

5
6
7
8
9

32

31

33

97

34

96

35

95

36

94

37

93

38

92

39

91

40

90

41

89

42

88

43

87

44

45

86

85

46

47

84

83

48

82

49

81

50

80
79
78
77
76
75

71

69
68
67
66
65
64
63
62

60
59
58
57

55

74
73
72

70

61

56

54
53
52
51

PI6/SO1
PI7/SI1
PE0/INT0
PE1/EC/INT2
PE2/PWM0
PE3/PWM1
PE4/DAA0
PE5/DAA1
PE6/DAB0
PE7/DAB1
PG0
PG1
PG2
PG3
PG4
PG5
PG6/EXI0
PG7/EXI1
AN0
AN1
AN2
AN3
PF0/AN4
PF1/AN5
PF2/AN6
PF3/AN7

DD

AV
AVREF
AVSS
PF4/AN8

PH7

PH6

PH5

PH4

PH3

PH2

PH1

PH0

MP

RST

SS

V

XTAL

CS0

EXTAL

SI0

SO0

SCK0

Note) 1. NC (Pin 90) is always connected to VDD.

2. Vss (Pins 41 and 88) are both connected to GND.

– 3 –

PF5/AN9

PF6/AN10

PF7/AN11

Pin Assignment (Top View) 100-pin LQFP package

PA6/PPO6

PA5/PPO5

PA4/PPO4

PA3/PPO3

PA2/PPO2

PA1/PPO1

PA0/PPO0

PB7/PPO15

PB6/PPO14

PB5/PPO13

PB4/PPO12

DD

V

NC

PA7/PPO7

CXP81720B/81724B

SS

TX

V

TEX

PI2/PWM

PI1/RMC

PI5/SCK1

PI4/INT1/NMI

PI3/TO/ADJ

PI7/SI1

PI6/SO1

PE0/INT0

PB3/PPO11
PB2/PPO10

PB1/PPO9
PB0/PPO8
PC7/RTO7
PC6/RTO6
PC5/RTO5
PC4/RTO4

PC3/RTO3
PC2/PPO18
PC1/PPO17
PC0/PPO16

PJ7
PJ6
PJ5
PJ4
PJ3
PJ2
PJ1

PJ0
PD7
PD6
PD5
PD4
PD3

10
11
12
13
14
15
16
17
18
19

21
22

25

20

23
24

100

99

98
1
2
3
4
5
6

7
8
9

27

28

26

97

29

96

30

95

31

94

32

93

33

92

34

91

35

90

36

89

37

88

38

87

39

86

40

85

41

84

42

83

43

82

44

81

45

80

46

79

47

78

48

77

49

76

50

75
74
73
72

70
69

67

65
64
63
62
61

59
58

56
55
54
53
52
51

71

68

66

60

57

PE1/EC/INT2
PE2/PWM0
PE3/PWM1
PE4/DAA0
PE5/DAA1
PE6/DAB0
PE7/DAB1
PG0
PG1
PG2
PG3
PG4
PG5
PG6/EXI0
PG7/EXI1
AN0
AN1
AN2
AN3
PF0/AN4
PF1/AN5
PF2/AN6
PF3AN7
AV

DD

AVREF

PD2

PD1

PD0

PH7

PH6

PH5

PH4

PH3

PH2

PH1

PH0

RST

V

XTAL

CS0

EXTAL

SS

MP

Note) 1. NC (Pin 88) is always connected to VDD.

2. Vss (Pins 39 and 86) are both connected to GND.

– 4 –

SI0

SO0

SCK0

PF7/AN11

PF4/AN8

PF5/AN9

PF6/AN10

SS

AV

Pin Description

Symbol I/O Description

(Port A)

PA0/PPO0

to

PA7/PPO7

Output/
Real time
output

8-bit output port. Data is
gated with PPO contents by
OR-gate and they are output.
(8 pins)

(Port B)

PB0/PPO8

to

PB7/PPO15

Output/
Real time
output

8-bit output port. Data is
gated with PPO contents by
OR-gate and they are output.
(8 pins)

CXP81720B/81724B

Programmable pattern generator (PPG)
output.
Functions as high-precision real-time
pulse output port.
(19 pins)

PC0/PPO16

to

PC2/PPO18
PC3/RTO3

to

PC7/RTO7

PD0 to PD7

PE0/INT0

PE1/EC/INT2

PE2/PWM0
PE3/PWM1
PE4/DAA0
PE5/DAA1
PE6/DAB0

I/O/
Real time
output

I/O/
Real time
output

I/O

Input/input

Input/input/input

Output/output
Output/output
Output/output
Output/output
Output/output

(Port C)
8-bit I/O port. I/O can be set
in a unit of single bits.
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)

(Port D)
8-bit I/O port. I/O can be set in a unit of 4 bits.
Can drive 12mA sink current.
(8 pins)

Input to request external interruption.
Active at the falling edge.

External event
input for

(Port E)

timer/counter.
8-bit port. Lower 2 bits are for
input; upper 6 bits are for
output.

PWM outputs.

(2 pins)
(8 pins)

DA gate pulse outputs.

(4 pins)

Input to request external
interruption.
Active at the falling edge.

PE7/DAB1
AN0 to AN3
PF0/AN4

to

PF3/AN7
PF4/AN8

to

PF7/AN11
SCK0
SO0
SI0
CS0

Output/output
Input

Input/input

Output/input

I/O
Ouput
Input
Input

Analog inputs to A/D converter. (12 pins)
(Port F)

8-bit port. Lower 4 bits are for input; upper 4 bits are for
output.
Lower 4 bits also serve as standby release input pin.
(8 pins)

Serial clock I/O (CH0).
Serial data output (CH0).
Serial data input (CH0).
Serial chip select input (CH0).

– 5 –

Symbol I/O Description

CXP81720B/81724B

PG0 to PG5
PG6/EXI0
PG7/EXI1

PH0 to PH7

PI1/RMC
PI2/PWM
PI3/TO/ADJ
PI4/INT1/

NMI
PI5/SCK1
PI6/SO1
PI7/SI1

PJ0 to PJ7

EXTAL
XTAL

Input
Input/input
Input/input

Output

I/O/input
I/O/output
I/O/output/output

I/O/input/input
I/O/I/O

I/O/output
I/O/input

I/O

Input
Output

(Port G)
8-bit input port.
(8 pins)

External input to FRC capture unit.
(2 pins)

(Port H)
N-ch open drain output of medium drive voltage (12V) and large current
(12mA).
(8 pins)

Remote control reception circuit input.

14-bit PWM output.
(Port I)
7-bit I/O port.
I/O port can be
set in a unit of
single bits.
(7 pins)

Timer/counter, 32kHz oscillation adjustment output.

Input to request external interruption and non

maskable interruption. Active at the falling edge.

Serial clock I/O (CH1).

Serial data output (CH1).

Serial data input (CH1).
(Port J)

8-bit I/O port. I/O and standby release input function can be set in a
unit of single bits.

Connnects a crystal oscillator for system clock. When supplying the
external clock, input the external clock to EXTAL pin and input
opposite phase clock to XTAL pin.

TEX
TX
RST
MP
AVDD
AVREF
AVss
VDD
Vss

Input
Output
Input
Input

Input

Connects a crystal oscillator for 32kHz timer/counter clock. When used
as event counter, input to TEX pin and leave TX pin open.

System reset; active at Low level.
Test mode pin. Always connect to GND.
Positive power supply of A/D converter.
Reference voltage input of A/D converter.
GND of A/D converter.
Positive power supply.
GND. Connect both Vss pins to GND.

– 6 –

Input/Output Circuit Formats for Pins

CXP81720B/81724B

Pin

PA0/PPO0

to

PA7/PPO7
PB0/PPO8

to

PB7/PPO15

16 pins

PC0/PPO16

to

PC2/PPO18
PC3/RTO3

to

PC7/RTO7

Port A
Port B

Data bus

Port C

PPO data

Ports A, B data

RD (Port A or B)

PPO, RTO data

Port C data

Port C direction

"0" when reset

Circuit format

Output becomes active from high
impedance by data writing to port register.

IP

Input
protection
circuit

When reset

Hi-Z

Hi-Z

8 pins

PD0

to

PD7

8 pins

Data bus

Port D

Data bus

RD (Port C)

Port D data

Port D direction

"0" when reset

RD (Port D)

IP

Large
current
12mA

Hi-Z

– 7 –