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LC723461W 데이터시트(PDF) 8 Page - Sanyo Semicon Device

부품명 LC723461W
상세설명  Ultralow-Voltage ETR Controller with On-Chip LCD Driver
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제조업체  SANYO [Sanyo Semicon Device]
홈페이지  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC723461W 데이터시트(HTML) 8 Page - Sanyo Semicon Device

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No. 7275-8/13
LC723461W, 723462W
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 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 in a units, 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 8-bit successive approximation type converter, and features a
conversion time of 0.64 ms. Note that the full-scale A/D converter voltage (FFH) is
VDC3/2.0 V.
22
21
20
PF0/ADI0
PF1/ADI1
PF2/ADI3
I
CMOS input/analog input
LCD driver segment output and general-purpose I/O shared function ports.
The IOS instruction is used for switching between the segment output and general-
purpose I/O functions and between input and output for the general-purpose I/O port
function.
• When used as segment output ports
The segment output port is selected with the IOS instruction (Pwn = 8).
b0 to b3 = S17 to 20/PG0 to 3 (0: Segment output, 1: PG0 to 3)
The segment output port is selected with the IOS instruction (Pwn = 9).
b0 to b3 = S13 to 16/PH0 to 3 (0: Segment output, 1: PH0 to 3)
• When used as general-purpose I/O ports
The IOS instruction is used to select input or output. Note that the mode can be
set in a bit units.
b0 = PG0
b0 = PH0
b1 = PG1
b1 = PH1
0: Input
b2 = PG2
b2 = PH2
1: Output
b3 = PG3
b3 = PH3
Note that there is a mask option that allows these pins to be used as n-channel open
drain ports.
In backup mode, these pins go to the input disabled high-impedance state if set up as
general-purpose outputs, and are fixed at the low level if set up as segment outputs.
These ports are set up as segment outputs after a reset.
Although the general-purpose port/LCD port setting is a mask option, the IOS
instruction must be used as described above to set up the port function.
31
32
33
34
35
36
37
38
PG3/S20
PG2/S19
PG1/S18
PG0/S17
PH3/S16
PH2/S15
PH1/S14
PH0/S13
*2
O
CMOS push-pull
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, these outputs are fixed at the low level.
After a reset, these outputs are fixed at the low level.
39 to
50
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, these outputs are fixed at the low level.
After a reset, these outputs are fixed at the low level.
51
52
53
54
COM4
COM3
COM2
COM1
O
CMOS push-pull
Continued on next page.


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