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LC72314W 数据表(PDF) 8 Page - Sanyo Semicon Device

部件名 LC72314W
功能描述  Ultralow-Voltage ETR Controller with On-Chip LCD Driver
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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

LC72314W 数据表(HTML) 8 Page - Sanyo Semicon Device

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No. 6650-8/12
LC72314W, 72315W, 72316W
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 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 6-bit successive approximation type converter, and features a
conversion time of 1.28 ms. Note that the full-scale A/D converter voltage (3FH) is
(63
/96) VDD.
30
29
28
27
PF0/ADI0
PF1/ADI1
PF2
PF3/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 general-purpose I/O port function is selected with the IOS instruction (Pwn = 8).
b0 to b3 = S17 to 20/PG0 to 3
(0: segment output 1: general-purpose I/O)
The general-purpose I/O port function is selected with the IOS instruction (Pwn = 9).
b0 to b3 = S13 to 16/PH0 to 3
(0: segment output 1: general-purpose I/O)
The general-purpose I/O port function is selected with the IOS instruction
(Rwn = D)
b0 to b3 = S21 to 24/PI0 to 3
(0: segment output 1: general-purpose I/O)
The general-purpose I/O port function is selected with the IOS instruction
(Rwn = E)
b0 to b3 = S25 to 28/PJ0 to 3
(0: segment output 1: general-purpose I/O)
• When used as general-purpose I/O ports
The IOS instruction (Pwn = 6, 7, A, B) is used to select input or output. Note that
the mode can be set in a bit units.
b0 = PG0
b0 = PH0
b0 = PI0
b0 = PJ0
b1 = PG1
b1 = PH0
b1 = PI1
b1 = PJ1
0: Input
b2 = PG2
b2 = PH0
b2 = PI2
b2 = PJ2
1: Output
b3 = PG3
b3 = PH0
b3 = PI3
b3 = PJ3
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.
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
PJ3/S28
PJ2/S27
PJ1/S26
PJ0/S25
PI3/S24
PI2/S23
PI1/S22
PI0/S21
PG3/S20
PG2/S19
PG1/S18
PG0/S17
PH3/S16
PH2/S15
PH1/S14
PH0/S13
*2
I/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.
56 to
67
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.
68
69
70
71
COM4
COM3
COM2
COM1
O
CMOS push-pull
Continued on next page.


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