The CXP83232A/83240A is a CMOS 8-bit single
chip microcomputer integrating on a single chip an
A/D converter, serial interface, timer/counter, time
base timer, 32kHz timer/counter, capture timer
counter, LCD controller/driver, remote control
reception circuit and 14-bit PWM output besides the
basic configurations of 8-bit CPU, ROM, RAM, and
I/O port.
The CXP83232A/83240A also provides a sleep/stop
function that enables lower power consumption.
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 cycle400ns at 10MHz operation
8µs at 500kHz
122µs at 32kHz operation
• Incorporated ROM capacity32Kbytes (CXP83232A)
40Kbytes (CXP83240A)
• Incorporated RAM capacity1120bytes (includes LCD display data area)
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.
8-bit I/O port. I/O can
be set in a single bit
unit.
Serial clock I/O (CH0).
Serial data input (CH0).
Incorporation of pull-up
resistor can be set
through the software in
Serial data output (CH0).
Serial clock I/O (CH1).
a unit of 4 bits.
(8 pins)
Serial data input (CH1).
Serial data output (CH1).
(Port C)
8-bit I/O port. I/O can be set in a single bit unit. Capable of driving 12mA
sync current. Incorporation of pull-up resistor can be set through the
software in a unit of 4 bits.
(8 pins)
External event inputs for
timer/counter.
(2 pins)
(Port E)
7-bit port. lower 5 bits
are for inputs; upper 2
bits are for outputs.
(7 pins)
External interruption request inputs.
(4 pins)
Non-maskable interruption request
input.
Remote control reception circuit input.
PE5/PWM
PE6/TO/
ADJ
PH0 to PH7
Output/Output
Output/Output/
Output
I/O
14-bit PWM output.
Rectangular wave output
for 16-bit timer/counter
(duty output 50%).
Output for 32kHz
oscillation
frequency division.
(Port H)
8-bit I/O port. I/O can be set in a single bit unit. Incorporation of pull-up
resistor can be set through the software in a unit of 4 bits.
(8 pins)
– 5 –
SymbolI/OFunctions
PD0/SEG16
to
PD7/SEG23
Output/Output
(Port D)
8-bit output port.
(8 pins)
CXP83232A/83240A
PF0/SEG24
to
PF7/SEG31
PG0/SEG32
to
PG7/SEG39
SEG0 to SEG15
COM0 to COM3
Output/Output
Output/Output
Output
Output
(Port F)
8-bit output port.
(8 pins)
(port G)
8-bit output port.
(8 pins)
LCD segment signal output.
LCD common signal output.
VLC1 to VLC3LCD bias power supply.
VL
EXTAL1
Output
Input
Control pin to cut off the current flowing to external LCD bias resistor
during standby.
Crystal connectors for system clock oscillation. When the clock is supplied
externally, input to EXTAL1; opposite phase clock should be input to XTAL1.
System clock oscillation of EXTAL1 and XTAL1 is used for normal operation
XTAL1
EXTAL2
Input
mode (Max. 10MHz).
Crystal connectors for system clock oscillation. When the clock is supplied
externally, input to EXTAL2; opposite phase clock should be input to XTAL2.
System clock oscillation of EXTAL2 and XTAL2 is used for sub clock mode
XTAL2
(Typ. 500kHz).
LCD segment signal output.
TEX
RST
NC
AVREF
AVSS
VDD
VSS
Input
OutputTX
Input
Input
Crystal connectors for 32kHz timer/counter clock generation circuit.
Connect a 32.768kHz crystal oscillator between TEX and TX. For usage
as event input, connect clock oscillation source to TEX, and leave TX
open.
Low-level active system reset.
NC. Under normal operating conditions, connect to VDD.
Reference voltage input for A/D converter.
A/D converter GND.
Positive power supply.
GND. Two VSS are connected to GND.