lc72323 Sanyo Semiconductor Corporation, lc72323 Datasheet - Page 7

• Manufacturer Part Number: lc72323
• Description: Single-chip Microcontroller With Pll And Lcd Driver
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
PA0
PA1
PA2
PA3
PB0
PB1
PB2
PB3
PC0
PC1
PC2
PC3
PD0
PD1
PD2
PD3
PE0
PE1
PE2
PE3
PG0
PG1
PG2
PG3
PF0
PF1
PF2
PF3
Pin
Pin No.
35
34
33
32
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
6
5
4
3
Low-threshold type dedicated input port
These pins can be used, for example, for key data acquisition.
Built-in pull-down resistors can be specified as an option. This
option is in 4-pin units, and cannot be specified for individual
pins.
Input through these pins is disabled in BACKUP mode.
Dedicated output ports
Since the output transistor impedances are unbalanced
CMOS, these pins can be effectively used for functions such
as key scan timing. These pins go to the output high-
impedance state in BACKUP mode.
These pins go to the low level during a reset, i.e., when the
RES pin is low.
Dedicated output ports
These are normal CMOS outputs. These pins go to the output
high-impedance state in BACKUP mode.
These pins go to the low level during a reset, i.e., when the
RES pin is low.
I/O port
These pins are switched between input and output as follows:
Once an input instruction (IN, TPT, or TPF) is executed, these
pins latch in the input mode. Once an output instruction (OUT,
SPB, or RPB) is executed, they latch in the output mode.
These pins go to the input mode during a reset, i.e., when the
RES pin is low.
In BACKUP mode these pins go to the input mode with input
disabled.
I/O port
These pins are switched between input and output by the
FPC instruction.
The I/O states of this port can be specified for individual pins.
These pins go to the input mode during a reset, i.e., when the
RES pin is low.
In BACKUP mode these pins go to the input mode with input
disabled.
Dedicated input port
Input through these pins is disabled in BACKUP mode.
Function
LC72323
Output
Input
Input
I/O
I/O
I/O circuit type
Continued on next page.
No. 4950-7/13