UPD789304 Datasheet, PDF (11/64 Pages) NEC – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD789304, 789306, 789314, 789316
3.2 Non-Port Pins
Pin Name
I/O
INTP0
Input
INTP1
INTP2
INTP3
KR0 to KR3
Input
SCK10
I/O
SCK20
SI10
Input
SI20
SO10
Output
SO20
ASCK20
Input
RxD20
Input
TxD20
Output
TO20
Output
CPT20
Input
TO30
Output
TO40
Output
TMI40
Input
S0 to S23
Output
COM0 to COM3 Output
VLC0 to VLC2
–
CAPH
–
CAPL
X1^{Note 1}
X2^{Note 1}
CL1^{Note 2}
CL2^{Note 2}
–
Input
–
Input
–
XT1
Input
XT2
–
RESET
Input
VDD
–
VSS
–
IC
–
Function
External interrupt input for which the valid edge (rising edge,
falling edge, or both rising and falling edges) can be specified
Key return signal detection
Serial clock input/output for serial interface (SIO10)
Serial clock input/output for serial interface (SIO20)
Serial data input for SIO10 serial interface
Serial data input for SIO20 serial interface
Serial data output for SIO10 serial interface
Serial data output for SIO20 serial interface
Serial clock input for asynchronous serial interface
Serial data input for asynchronous serial interface
Serial data output for asynchronous serial interface
16-bit timer (TM20) output
Capture edge input
8-bit timer (TM30) output
8-bit timer (TM40) output
External count clock input to 8-bit timer (TM40)
Segment signal output for LCD controller/driver
Common signal output for LCD controller/driver
LCD drive voltage
Connection pin for LCD driver’s capacitor
Connecting crystal resonator for main system clock oscillation
Connections to resistor (R) and capacitor (C) for main system
clock oscillation
Connecting crystal resonator for subsystem clock oscillation
System reset input
Positive power supply
Ground potential
Internally connected. Connect directly to VSS.
After Reset
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output
Output
–
–
–
–
–
–
–
–
–
Input
–
–
–
Alternate Function
P30/CPT20
P31/TO30/TMI40
P32/TO40
P33
P00 to P03
P20
P23/ASCK20
P22
P25/RxD20
P21
P24/TxD20
P23/SCK20
P25/SI20
P24/SO20
P26
P30/INTP0
P31/INTP1/TMI40
P32/INTP2
P31/INTP1/TO30
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Notes 1. µPD789304, 789306 only
2. µPD789314, 789316 only
Data Sheet U14384EJ1V0DS
11