LC87F7NC8A Datasheet, PDF (13/28 Pages) ON Semiconductor – 8-bit Microcontroller

LC87F7NC8A
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Pin Name
I/O
Description
Port 7
P70 to P73
I/O
• 4-bit I/O port
• I/O specifiable in 1-bit units
• Pull-up resistors can be turned on and off in 1-bit units.
• Shared pins
P70: INT0 input/HOLD release input/timer 0L capture input/watchdog timer output
P71: INT1 input/HOLD release input/timer 0H capture input
P72: INT2 input/HOLD release input/timer 0 event input/timer 0L capture input/
high speed clock counter input
P73: INT3 input (with noise filter)/timer 0 event input/timer 0H capture input/
remote control receiver input
AD converter input ports: AN8 (P70), AN9 (P71)
Interrupt acknowledge type
Rising
Falling
Rising &
Falling
H level
L level
INT0
enable
enable
disable
enable
enable
INT1
enable
enable
disable
enable
enable
INT2
enable
enable
enable
disable
disable
INT3
enable
enable
enable
disable
disable
Port 8
P80 to P87
S0/PA0 to
S7/PA7
S8/PB0 to
S15/PB7
S16/PC0 to
S23/PC7
S24/PD0 to
S31/PD7
S32/PE0 to
S39/PE7
S40/PF0 to
S47/PF7
COM0/PL0 to
COM3/PL3
V1/PL4 to
V3/PL6
RES
XT1
XT2
CF1
CF2
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Input
Input
I/O
Input
Output
• 8-bit I/O port
• I/O specifiable in 1-bit units
• Shared pins
AD converter input ports: AN0 to AN7
Small signal detector input port: MICIN (P87)
• Segment output for LCD
• Can be used as general-purpose I/O port (PA)
• Segment output for LCD
• Can be used as general-purpose I/O port (PB)
• Segment output for LCD
• Can be used as general-purpose I/O port (PC)
• Segment output for LCD
• Can be used as general-purpose I/O port (PD)
• Segment output for LCD
• Can be used as general-purpose I/O port (PE)
• Segment output for LCD
• Can be used as general-purpose I/O port (PF)
PF6: INT6 input
PF7: INT7 input
• Common output for LCD
• Can be used as general-purpose input port (PL)
• LCD output bias power supply
• Can be used as general-purpose input port (PL)
• Shared pins
AD converter input ports: AN12 (V1) to AN14 (V3)
On-chip debugger pins: DBGP0 (V1) to DBGP2 (V3)
Reset pin
• 32.768kHz crystal oscillator input pin
• Shared pins
General-purpose input port
Must be connected to VDD1 if not to be used.
AD converter input port: AN10
• 32.768kHz crystal oscillator output pin
• Shared pins
General-purpose I/O port
Must be set for oscillation and kept open if not to be used.
AD converter input port: AN11
Ceramic resonator input pin
Ceramic resonator output pin
Option
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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