The CXP82432A/82440A 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, fluorescent display
tube controller/driver, remote control reception circuit,
CTL duty detection circuit, 14-bit PWM output and
high-speed output circuit besides the basic
configurations of 8-bit CPU, ROM, RAM, and I/O
port.
The CXP82432A/82440A also provides 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
— Serial interface8-bit, 8-stage FIFO incorporated
(Auto transfer for 1 to 8 bytes), 1 channel
8-bit clock synchronized type, 1 channel
— Timers8-bit timer, 8-bit timer/counter, 19-bit time base timer
16-bit capture timer/counter, 32kHz timer/counter
— Fluorescent display tube controller/driverMaximum of 384 segments display possible
1 to 16-digit dynamic display
Dimmer function
High voltage drive output (40V)
Incorporated pull-down resistor (Mask option)
Hardware key scan function
Maximum of 16 x 8 key matrix compatible
— Remote control reception circuitIncorporated noise elimination circuit
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.
(Port B)
8-bit I/O port. I/O for
lower 7 bits can be set
in a unit of single bits.
Uppermost bit (PB7) is
for output only.
(8 pins)
(Port C)
8-bit I/O port. I/O can
be set in a unit of single
bits. Capable of driving
12mA sync current.
(Port D)
8-bit output port.
(8 pins)
(Port E)
8-bit port. Lower 6 bits
are for inputs; upper
2 bits are for outputs.
(8 pins)
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).
Serves as key return inputs when operating
key scan with FDP segment signal.
FDP segment signal outputs.
External event inputs for
Inputs for
external
timer/counter.
(2 pins)
interruption
request.
(4 pins)
Non-maskable interruption
request input.
Remote control reception circuit input.
Input for CTL duty direction circuit.
PE6/PWM
PE7/TO/
DDO/ADJ
PF0/S8
to
PF7/S15
PG0/RTO0
to
PG3/RTO3
PG4 to PG7
Output/Output
Output/Output/
Output/Output
Output/Output
I/O/Output
I/O
14-bit PWM output.
Output for the 16-bit timer/counter rectangular
waves, CTU duty detection, and 32kHz
oscillation frequency demultiplication.
(Port F)
8-bit output port.
FDP segment signal outputs.
(8pins)
(Port G)
8-bit I/O port. I/O can
be set in a unit of single
bits. Data for the lower
Outputs for real-time pulse generator (RTG).
Functions as high-precision, real-time pulse
output port.
(4 pins)
4 bits are gated with the
contents of RTO or OR-gate output. (8 pins)
– 4 –
Page 5
Pin codeI/OFunctions
(Port H)
I/OPH0 to PH7
8-bit I/O port. I/O can be set in a unit of single bits.
(8 pins)
CXP82432A/82440A
PI0/S16
to
PI7/S23
T8/S31
to
T15/S24
T0 to T7
VFDP
EXTAL
XTAL
TEX
TX
RST
NC
AVREF
AVSS
VDD
Output/Output
Output/Output
Output
Input
Output
Input
Output
Input
Input
(Port I)
8-bit output ports.
FDP segment signal outputs.
(8 pins)
Outputs for FDP timing (digit) signals/segment signals.
FDP timing signal outputs.
FDP voltage supply when incorporated resistor is set by mask option.
Crystal connectors system clock oscillation. When the clock is supplied
externally, input to EXTAL; opposite phase clock should be input to
XTAL.
Crystal connectors for 32kHz timer/counter clock oscillation. Set 32kHz
crystal oscillator between TEX and TX. For usage as event input, attach
clock source to TEX, and open TX.
Low-level active, system reset.
NC. Under normal operation, connect to VDD.
Reference voltage input for A/D converter.
A/D converter GND.
Vcc supply.
ADJ signal is a frequency demultiplication
output for 32kHz oscillation frequency
adjustment.
ADJ2 can be used for buzzer output.
When reset
High level
High level
PC0/RTO0
to
PG3/RTO3
4 pins
PG4 to PG7
PH0 to PH7
12 pins
Port G
Port G
Port H
Data bus
Data bus
RTO data
“0” when reset
Port G data
Port G direction
“0” when reset
RD (Port G)
Port G or Port H data
Port G or Port H direction
“0” when reset
RD (Port G or Port H)
Hi-Z
IP
IP
Hi-Z
– 8 –
Page 9
CXP82432A/82440A
Pin
PD0/S0
to
PD7/S7
PF0/S8
to
PF7/S15
PI0/S16
to
PI7/S23
24 pins
T15/S24
to
T8/S31
T0 to T7
16 pins
Port D
Port F
Port I
Output selection control signal
Data bus
Output selection control signal
Segment output data
(“0” when reset)
Data for Port D, F, or I
“0” when reset
RD (Port D, F, or I)
Segment output data
(“0” when reset)
Circuit format
Pull-down resistor
∗
Pull-down resistor
∗
High voltage drive transistor
∗
OP
Mask option
High voltage drive transistor
∗
OP
Mask option
V
FDP
When reset
Hi-Z or
Low level
(when PD
resistance is
added)
V
FDP
Hi-Z or
Low level
(when PD
resistance is
added)
EXTAL
XTAL
2 pins
TEX
TX
2 pins
RST
1 pin
EXTAL
XTAL
TEX
TX
• Diagram shows circuit
IP
IP
IP
IP
composition during
oscillation.
• Feedback resistor is
removed during stop.
• Diagram shows circuit
composition during
oscillation.
Oscillation
Oscillation
• When the operation of the oscillation
circuit is stopped by the software, the
feedback resistor is removed, and TEX
and TX become “Low” level and “High”
level respectively.
Pull-up resistor
OP
Mask option
IP
Schmitt input
Low level
– 9 –
Page 10
CXP82432A/82440A
Absolute Maximum Ratings(Vss = 0V reference)
ItemSymbolRatingUnitRemarks
Supply voltage
Input voltage
Output voltage
Display output voltage
High level output current
High level total output
current
Low level output current
Low level total output current
Operating temperature
Storage temperature
VDD
AVss
VIN
VOUT
VOD
IOH
IODH1
IODH2
∑IOH
∑IODH
IOL
IOLC∑IOL
Topr
Tstg
–0.3 to +7.0
–0.3 to +0.3
–0.3 to +7.0
–0.3 to +7.0
∗1
∗1
VDD–40 to VDD+0.3
–5
–15
–35
–40
–100
15
20
100
–20 to +75
–55 to +150
V
V
V
V
As P channel transistor is open drain,
V
VDD is reference.
mA
All pins excluding outputs∗2(value per pin)
mA
Display outputs S0 to S23 (value per pin)
Display outputs T0 to T7, and T8/S31 to
mA
T15/S24 (value per pin)
mA
Total for all pins excluding display outputs
mA
Total for all display outputs
mA
Port 1
mA
High current Port 1
mA
Total for all output pins
∗3
°C
°C
Allowable power dissipation
∗
1) VIN and VOUT must not exceed VDD + 0.3V.
∗
2) Specifies output current of general-purpose I/O ports.
∗
3) The high current drive transistor is the N-CH transistor of Port C (PC).
PD
600
mW
Note) Usage exceeding absolute maximum ratings may permanently impair the LSI. Normal operation should be
conducted under the recommended operating conditions. Exceeding these conditions may adversely affect
the reliability of the LSI.
Clock 1MHz
0V for all pins excluding
measured pins
1020
pF
AVSS, VFDP,
VDD, VSS
∗
1) RST specifies the input current when pull-up resistance has been selected; leakage current when no
resistance has been selected. PB7 does not specify the leakage current because it’s only for output.
∗
2) When incorporated pull-down resistance has been selected through mask option.
∗
3) When all pins are open.
– 13 –
Page 14
A
A
A
AC Characteristics
(1) Clock timing
CXP82432A/82440A
(Ta = –20 to +75°C, VDD = 4.5 to 5.5V, Vss = 0V reference)
ItemSymbolPinConditionsMin.Unit
System clock frequency
System clock input pulse width
System clock input rise time,
fall time
Event count input clock
pulse width
Event count input clock
rise time, fall time
System clock frequency
Event count input
pulse width
Event count input rise time,
fall time
∗
tsys indicates the three values below according to the upper two bits (CPU clock selection) of the control
clock registor (address: 00FEH).
fC
tXL
tXH
tCR
tCF
tEH
tEL
tER
tEF
fC
tTL
tTH
tTR
tTF
XTAL
EXTAL
EXTAL
EXTAL
EC0,
EC1
EC0,
EC1
TEX
TX
TEX
TEX
Fig. 1, Fig. 2
Fig. 1, Fig. 2
External clock drive
Fig. 1, Fig. 2
External clock drive
Fig. 3
Fig. 3
VDD = 2.7 to 5.5V
Fig. 2 (32kHz clock
application condition)
Fig. 3
Fig. 3
1
37.5
tsys + 50
10
∗
32.768
Typ.
Max.
10
200
20
20
MHz
ns
ns
ns
ms
kHz
µs
ms
tsys (ns)=2000/fc (upper two bits="00"), 4000/fc (upper two bits="01"), 16000/fc (upper two bits="11")
Fig. 1. Clock timing
EXTAL
Fig. 2. Clock application conditions
Crystal oscillation
Ceramic oscillation
EXTAL
AA
C1C2
Fig. 3. Event count clock timing
TEX
EC0
EC1
XTAL
1/fc
tXHtXLtCFtCR
32kHz clock application condition
External clock
EXTAL
AA
74HC04
XTAL
Crystal oscillation
TEX
AA
1C2
C
DD–0.4V
V
0.4V
TX
0.8VDD
0.2VDD
t
EHtELtEFtER
tTHtTLtTFtTR
– 14 –
Page 15
CXP82432A/82440A
(2) Serial transfer (CH0)(Ta = –20 to +75°C, VDD = 4.5 to 5.5V, Vss = 0V reference)
Item
CS0 ↓ → SCK0
delay time
CS0 ↑ → SCK0
float delay time
CS0 ↓ → SO0
delay time
CS0 ↑ → SO0
float delay time
CS0 High level width
SCK0 cycle time
SCK0
High, Low level width
SI0 input set-up time
(for SCK0 ↑)
SI0 input hold time
(for SCK0 ↑)
SCK0 ↓ → SO0
delay time
SymbolPinMin.
tDCSK
tDCSKF
tDCSO
tDCSOF
tWHCS
tKCY
tKH
tKL
tSIK
tKSI
tKSO
SCK0
SCK0
SO0
SO0
CS0
SCK0
SCK0
SI0
SI0
SO0
Chip select transfer mode
(SCK0 = output mode)
Chip select transfer mode
(SCK0 = output mode)
Chip select transfer mode
Chip select transfer mode
Chip select transfer mode