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參數(shù)資料
| 型號(hào)： | LC72349G |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Low-Voltage ETR Controller with On-Chip LCD Driver |
| 中文描述： | 低電壓東突控制器的片上LCD驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大小： | 119K |
| 代理商： | LC72349G |
No. 6472-8/14
LC72348G/W, 72349G/W
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
(63
.
96) V
DD
.
23
22
21
PF0/ADI0
PF1/ADI1
PF2/ADI3
I
CMOS input/analog input
LCD driver segment output, general-purpose I/O, and general-purpose n-channel
open-drain output shared function ports.
The IOS instruction is used for switching between the segment output and general-
purpose I/O functions.
When used as segment output ports
The general-purpose I/O port function is selected with the IOS instruction (Pwn = 8).
b0 = S17 to 20/PG0 to 3 (0: Segment output, 1: PG0 to 3)
The general-purpose I/O port function is selected with the IOS instruction (Pwn = 9).
b0 = S13 to 16/PH0 to 3 (0: Segment output, 1: PH0 to 3)
When used as general-purpose I/O ports
The IOS instruction (Pwn = 6,7) is used to select input or output. Note that the
mode can be set in individual by the bit.
b0 = PG0
b1 = PG1
b2 = PG2
b3 = PG3
b0 = PH0
b1 = PH1
b2 = PH2
b3 = PH3
0: Input
1: Output
0: Input
1: Output
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 I/O port/general-purpose n-channel open-drain
output/LCD port setting is a mask option, the IOS instruction must be used as
described above to set up the port function.
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
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, the outputs are fixed at the low level.
After a reset, the outputs are fixed at the low level.
33 to
44
S16 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.
49
50
51
52
DBR4
DBR3
DBR2
DBR1
I
CMOS push-pull
Continued on next page.
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