LC723482W 查看數據表（PDF） - SANYO -> Panasonic
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LC723482W Datasheet PDF : 15 Pages
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LC723481W/2W/3W
Continued from preceding page.
Pin No.
Pin
23
PF0/ADI0
22
PF1/ADI1
21
PF2/ADI3
I/O
Function
General-purpose input and A/D converter input shared function ports. The IOS
instruction (Pwn = FH) is used to switch between the general-purpose input and A/D
converter port functions. The general-purpose input and A/D converter port functions
can be switched by the bit, with 0 specifying general-purpose input, and 1 specifying
the A/D converter input function. To select the A/D converter function, set up the A/D
converter pin with an IOS instruction with Pwn set to 1. The A/D converter is started
with the UCC instruction (b3 = 1, b2 = 1). The ADCE flag is set when the conversion
I completes. The INR instruction is used to read in the data.
*: If an input instruction is executed for one of these pins which is set up for analog
input, the read in data will be at the low level since CMOS input is disabled. In
backup mode these pins go to the input disabled high-impedance state. These
ports are set to their general-purpose input port function after a reset. The A/D
converter is a 5-bit successive approximation type converter, and features a
conversion time of 1.28 ms. Note that the full-scale A/D converter voltage (1FH) is
(62/96) VDD.
I/O circuit
CMOS input/analog input
Shared function ports that function either as LCD driver segment outputs or general-
purpose I/O ports.
The IOS instruction is used to switch between the segment output and the general-
purpose I/O port functions.
• When used as segment output ports
25
PG3/S20
The IOS (Pwn=8) instruction is used to set the general-purpose I/O port.
b0 to 3 = S17 to S20/PG0 to PG3
26
PG2/S19
(0: Segment output, 1: PG0 to PG3)
27
PG1/S18
The IOS (Pwn=9) instruction is used to set the general-purpose I/O port.
b0 to 3 = S13 to S16/PH0 to PH3
28
PG0/S17
(0: Segment output, 1: PH0 to PH3)
29
PH3/S16
O
• When used as general-purpose I/O ports
The IOS instruction (Pwn=6, 7) is used to switch the I/O direction. The directions
30
PH2/S15
of these pins can be set individually in 1-bit units.
31
PH1/S14
b0 = PG0
b0 = PH0
32
PH0/S13
b1 = PG1
0: Input
b1 = PH1
0: Input
*2
b2 = PG2
1: Output
b2 = PH2
1: Output
b3 = PG3
b3 = PH3
In backup mode, if used as general-purpose I/O ports, they will be in the input
disabled high-impedance state. If used as segment outputs, they will be held fixed at
the low level.
Although the general-purpose port/LCD port setting is a mask option, the setup with
the IOS instruction described above is also necessary.
CMOS push-pull
33 to
44
S12 to S1
LCD driver segment output pins.
A 1/4-duty 1/2-bias drive technique is used.
O The frame frequency is 75 Hz.
In backup mode, the outputs are fixed at the low level.
After a reset, the outputs are fixed at the low level.
CMOS push-pull
LCD driver common output pins.
45
COM4
A 1/4-duty 1/2-bias drive technique is used.
46
COM3
O The frame frequency is 75 Hz.
47
COM2
In backup mode, the outputs are fixed at the low level.
48
COM1
After a reset, the outputs are fixed at the low level.
50
DBR4
51
DBR3
52
DBR2
53
DBR1
I LCD power supply step-up voltage inputs.
Continued on next page.
No. 7253-8/15
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