LC877424A Datasheet, PDF (9/22 Pages) Sanyo Semicon Device – 8 Bit Single Chip Microcontroller Incorporating 48K/40K/32K/24K Byte ROM and 1536 byte RAM on Chip

Continued from preceding page.
Pin name
I/O
S0 / PA0 to
I/O
S7 / PA7
S8 / PB0 to
I/O
S15 / PB7
S16 / PC0 to
I/O
S23 / PC7
S24 / PD0 to
I/O
S31 / PD7
S32 / PE0 to
I/O
S39 / PE7
S40 / PF0 to
I/O
S47 / PF7
COM0 / PL0 to
I/O
COM3 / PL3
V1 / PL4 to
I/O
V3 / PL6
RES
I
XT1
I
XT2
I/O
CF1
I
CF2
O
LC877448A/40A/32A/24A
Function
• Segment output for LCD
• Can be used as general purpose input / output port (PA)
• Segment output for LCD
• Can be used as general purpose input / output port (PB)
• Segment output for LCD
• Can be used as general purpose input / output port (PC)
• Segment output for LCD
• Can be used as general purpose input / output port (PD)
• Segment output for LCD
• Can be used as general purpose input / output port (PE)
• Segment output for LCD
• Can be used as general purpose input / output port (PF)
• 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)
• Other functions:
AD input ports: AN12 to AN14
Reset terminal
• Input for 32.768kHz crystal oscillation
• Other functions:
General purpose input port
AD input port: AN10
• When not in use, connect to VDD1
• Output for 32.768kHz crystal oscillation
• Other functions:
General purpose input port
AD input port: AN11
• When not in use, set to oscillation mode and leave open
Input terminal for ceramic oscillator
Output terminal for ceramic oscillator
Option
No
No
No
No
No
No
No
No
No
No
No
No
No
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
Pull-up resistor
P00 to P07
each bit
1
CMOS
Programmable (Note 1)
2
Nch-open drain
None
P10 to P17
each bit
1
CMOS
Programmable
2
Nch-open drain
Programmable
P30 to P35
each bit
1
CMOS
Programmable
2
Nch-open drain
None
P70
-
None
Nch-open drain
Programmable
P71 to P73
-
None
CMOS
Programmable
P80 to P87
-
None
Nch-open drain
None
S0 / PA0 to
S47 / PF7
COM0 / PL0 to
COM3 / PL3
V1 / PL4 to
V3 / PL6
XT1
-
None
CMOS
-
None
Input only
-
None
Input only
-
None
Input only
Programmable
None
None
None
XT2
-
None
Output for 32.768kHz crystal oscillation
None
Note 1 Attachment of Port 0 programmable pull-up resistors is controllable in nibble units (P00 to 03, P04 to 07).
No.7776-9/22