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LC723482W 数据表(PDF) 8 Page - Sanyo Semicon Device

部件名 LC723482W
功能描述  Low-Voltage ETR-Controller
Download  15 Pages
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制造商  SANYO [Sanyo Semicon Device]
网页  https://www.sanyo-av.com/us/
标志 SANYO - Sanyo Semicon Device

LC723482W 数据表(HTML) 8 Page - Sanyo Semicon Device

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No. 7253-8/15
LC723481W/2W/3W
Continued from preceding page.
Pin No.
Pin
I/O
Function
I/O circuit
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
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.
23
22
21
PF0/ADI0
PF1/ADI1
PF2/ADI3
I
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
The IOS (Pwn=8) instruction is used to set the general-purpose I/O port.
b0 to 3 = S17 to S20/PG0 to PG3
(0: Segment output, 1: PG0 to PG3)
The IOS (Pwn=9) instruction is used to set the general-purpose I/O port.
b0 to 3 = S13 to S16/PH0 to PH3
(0: Segment output, 1: PH0 to PH3)
• When used as general-purpose I/O ports
The IOS instruction (Pwn=6, 7) is used to switch the I/O direction. The directions
of these pins can be set individually in 1-bit units.
b0 = PG0
b0 = PH0
b1 = PG1
0: Input
b1 = PH1
0: Input
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.
25
26
27
28
29
30
31
32
PG3/S20
PG2/S19
PG1/S18
PG0/S17
PH3/S16
PH2/S15
PH1/S14
PH0/S13
*2
O
CMOS push-pull
Continued on next page.
LCD driver segment output pins.
A 1/4-duty 1/2-bias drive technique is used.
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.
33 to
44
S12 to S1
O
LCD driver common output pins.
A 1/4-duty 1/2-bias drive technique is used.
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.
45
46
47
48
COM4
COM3
COM2
COM1
O
LCD power supply step-up voltage inputs.
50
51
52
53
DBR4
DBR3
DBR2
DBR1
I
CMOS push-pull


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