Sony CXP81848A, CXP81840A Datasheet

CXP81840A/81848A

CMOS 8-bit Single Chip Microcomputer

Description

The CXP81840A/81848A is a CMOS 8-bit micro­computer which consists of A/D converter, serial
interface, timer/counter, time base timer, vector
interruption, high precision timing pattern generation
circuit, PWM generator, PWM for tuner, 32kHz
timer/event counter, remote control receiving circuit,
as well as basic configurations like 8-bit CPU, ROM,
RAM and I/O port. They are integrated into a single
chip.

Also CXP81840A/81848A provides sleep/stop
function which enables to lower power consumption
and ultra-low speed instruction mode in 32kHz
operation.

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

Structure

Silicon gate CMOS IC

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 (Supply voltage 3.0 to 5.5V)

During operation 250ns/16MHz (Supply voltage 4.5 to 5.5V)
During operation 122µs/32kHz

• Incorporated ROM capacity 40K bytes (CXP81840A)

48K bytes (CXP81848A)

• Incorporated RAM capacity 1344bytes

• Peripheral functions

— A/D converter 8-bit, 12-channel, successive approximation system

(Conversion time 20.0µs/16MHz)

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

(1 to 8 bytes auto transfer)
8-bit serial I/O, 1-channel

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

32kHz timer/counter

— High precision timing pattern generator PPG 19 pins 32-stage programmable

RTG 5-pins 2-channel
— PWM/DA gate output 12-bit, 2-channel (Repetitive frequency 62kHz/16MHz)
— FRC capture unit Incorporated 26-bit and 8-stage FIFO
— PWM output 14-bit, 1-channel
— Remote control receiving 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/evaluation chip CXP81800 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 –

E94Z12-ST

CXP81840A/81848A

Vss
V

DD

MP
RST

XTAL
EXTAL

TX
TEX

PE1/INT2
PI4/INT1/NMI

PE0/INT0

PA0 to PA7

PB0 to PB7

8

PORT A8PORT B8PORT C

CLOCK

GENERATOR/

SYSTEM CONTROL

SPC700

CPU CORE

NMI

2

PC0 to PC7

PD0 to PD7
8

PORT D

RAM

1344 BYTES

PROM

40K/48K BYTES

INTERRUPT CONTROLLER

PE0 to PE1

PE2 to PE7

2

6

PORT E

2

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

FRC

CAPTURE UNIT

2

PI1 to PI7

REALTIME

2

PJ0 to PJ7

8

PORT J

CH1

519

PULSE

CH0

GENERATOR

RAM

PATTERN

GENERATOR

PROGRAMMABLE

4

2

PC7/RTO7

to

PC3/RTO3

PC2/PPO18

to

PA0/PPO0

AVss

AV

REF

AV

DD

AN0 to AN3

Block Diagram

A/D CONVERTER

12

PF0/AN4

PF7/AN11

to

FIFO

(CH0)

SERIAL

INTERFACE UNIT

SI0

CS0

SO0

SCK0

(CH1)

8 BIT TIMER 1

SERIAL INTERFACE UNIT

PI7/SI1

PI6/SO1

PI5/SCK1

8 BIT TIMER/COUNTER 0

PI3/TO

PE1/EC

– 2 –

PG7/EXI1

PG6/EXI0

FIFO

REMOCON INPUT

PI1/RMC

14 BIT PWM GENERATOR

PI2/PWM

12 BIT PWM GENERATOR CH1

12 BIT PWM GENERATOR CH0

PI3/ADJ

PE7/DAB1

PE5/DAA1

PE6/DAB0

PE4/DAA0

PE3/PWM1

PE2/PWM0

Pin Configuration 1 (Top View) 100 pin QFP package

PA6/PPO6

PA5/PPO5

PA4/PPO4

PA3/PPO3

PA2/PPO2

PA1/PPO1

PA0/PPO0

PB7/PPO15

PB6/PPO14

DD

V

NC

PA7/PPO7

CXP81840A/81848A

SS

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

84

47

83

48

82

49

81

50

80
79
78
77
76
75

71

69
68
67
66
65
64
63
62
61
60
59
58
57
56
55

53
52
51

74
73
72

70

54

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
AV

DD

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 Configuration 2 (Top View) 100 pin LQFP package

PA7/PPO7

PA6/PPO6

PA5/PPO5

PA4/PPO4

PA3/PPO3

PA2/PPO2

PA1/PPO1

PA0/PPO0

PB7/PPO15

PB6/PPO14

PB5/PPO13

PB4/PPO12

NC

CXP81840A/81848A

SS

DD

V

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

20

23
24
25

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
PF3/AN7

DD

AV
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)

CXP81840A/81848A

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, 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)

(Port D)
8-bit I/O port. Enable to specify I/O by 4-bit unit.
Enables to drive 12mA sink current.
(8 pins)

Input pin to request external interruption.
Active when falling edge.

External event
input pin for

(Port E)

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

PWM output pins.

(2 pins)
(8 pins)

DA gate pulse output pins.

(4 pins)

Input pin to request
external interruption.
Active when 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 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)

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

– 5 –

Symbol I/O Description

CXP81840A/81848A

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

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

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

External input pin to FRC capture unit.

(Port H)
N-ch open drain output of middle tension proof (12V) and high current
(12mA).
(8 pins)

Remote control receiving circuit input pin.
14-bit PWM output pin.

(Port I)
7-bit I/O port.
I/O port can be
specified by the
bit unit.
(7 pins)

Timer/counter, 32kHz oscillation adjustment output
pin.

Input pin to request external interruption and
non maskable interruption. Active when falling edge.

Serial clock (CH1) I/O pin.
Serial data (CH1) output pin.
Serial data (CH1) input pin.

(Port J)
8-bit I/O port. Function as standby release input can be specified by

the bit unit. I/O can be specified by the bit unit.
EXTAL
XTAL
TEX
TX
RST

MP
AVDD
AVREF
AVss
VDD
Vss

Input
Output
Input
Output

Input
Input

Input

Connecting pin of 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.

Connecting pin of crystal oscillator for 32kHz timer clock. When used

as event counter, input to TEX pin and leave TX pin open.

(Feedback resistor is not removed.)

System reset pin of active "Low" level.

Microprocessor mode input pin. Always connect to GND.

Positive power supply pin of A/D converter.

Reference voltage input pin of A/D converter.

GND pin of A/D converter.

Positive power supply pin.

GND pin. Connect both Vss pins to GND.

– 6 –

Input/Output Circuit Formats for Pins

CXP81840A/81848A

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

Port A or Port B

RD

PPO, RTO data

Port C data

Port C direction

Circuit format

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

(Every bit)

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

RD (Port D)

(Every 4 bits)

PD0 to 3
PD4 to 7

IP

High
current
12mA

Hi-Z

– 7 –

CXP81840A/81848A

Pin

PE0/INT0
PE1/EC/INT2

2 pins

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

4 pins

Port E

Port E

Data bus

DA gate output
or PWM output

Hi-Z control

Port E data

Port/DA output
select

RD (Port E)

Schmitt input

IP

Circuit format

RD (Port E)

MPX

When reset

Hi-Z

Data bus

Hi-Z

PE6/DAB0
PE7/DAB1

2 pins

AN0

to

AN3

4 pins

PF0/AN4

to

PF3/AN7

Port E

Data bus

Port F

DA gate output

Hi-Z control

Port E data

Port/DA output
select

AA

RD (Port E)

Input multiplexer

IP

Input multiplexer

IP

MPX

A/D converter

A/D converter

H level

Hi-Z

Hi-Z

4 pins

Data bus

RD (Port F)

– 8 –