LC87F7932B Datasheet, PDF (12/29 Pages) Sanyo Semicon Device – 32K-byte FROM and 2048-byte RAM integrated 8-bit 1-chip Microcontroller

LC87F7932B
Continued from preceding page.
Pin name
I/O
Function description
S00/LPA0 to
S07/LPA7
S08/LPB0 to
S15/LPB7
S16/LPC0 to
S23/LPC7
COM0/LPL0 to
COM3/LPL3
V1 to V3
RES
I/O • Segment output for LCD
• Can be used as general purpose input/output port (LPA)
I/O • Segment output for LCD
• Can be used as general purpose input/output port (LPB)
I/O • Segment output for LCD
• Can be used as general purpose input/output port (LPC)
I/O • Common output for LCD
• Can be used as general purpose input/output port (LPL)
I/O • LCD output bias power supply
I • Reset terminal
XT1
I/O • Input for 32.768kHz crystal oscillation
• When not in use, connect to VDD1
XT2
I/O • Output for 32.768kHz crystal oscillation
• When not in use, set to oscillation mode and leave open
CF1
I • Input terminal for ceramic oscillator
• When not in use, connect to VDD1
CF2
O • Output terminal for ceramic oscillator
• When not in use, leave open
Port Configuration
Port form and pull-up resistor options are shown in the following table.
Port status can be read even when port is set to output mode.
Terminal
Option applies to:
Options
Output Form
P00 to P07
each bit
1
CMOS
2
Nch-open drain
P10 to P17
each bit
1
CMOS
2
Nch-open drain
P30
-
1
CMOS
2
Nch-open drain
P70
-
None
Nch-open drain
P71 to P73
-
None
CMOS
S00(LPA0) to
S23(LPC7)
-
None
CMOS
P-ch Open Drain
N-ch Open Drain
COM0(LPL0) to
COM3(LPL3)
-
None
CMOS
P-ch Open Drain
N-ch Open Drain
XT1
-
None
Input only
XT2
-
None
32.768kHz crystal oscillator output
Nch-open drain when selected as normal port
Option
No
No
No
No
No
No
No
No
No
No
Pull-up resistor
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
None
None
None
None
No.A1841-12/29