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參數(shù)資料
| 型號： | TC93P27F |
| 廠商： | Toshiba Corporation |
| 英文描述： | TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic |
| 中文描述： | 東芝的CMOS數(shù)字集成電路硅單片 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 206K |
| 代理商： | TC93P27F |
TC93P27F
2002-11-18
5
Description of Pin Function
Pin No.
Symbol
Pin Name
Function and Operation
Remarks
1
COM1
2
COM2
3
COM3
4
COM4
LCD common output
Output common signals to LCD panels. Through a
matrix with pins S1 to S25, a maximum 100
segments can be displayed.
Three levels, V
LCD
, V
EE
, and GND, are output at
62.5 Hz every 2 ms.
V
EE
is output after system reset and CLOCK STOP
are released, and a common signal is output after
the DISP OFF bit is set to “0”.
5~20
S1 to S16
LCD segment output
21~25
S17/P7-0
S21/P8-0
LCD segment
output/I/O port
26~29
S22/P8-1
/KR3
S25/P9-0/
KR0
LCD segment
output/I/O port/key
return timing output
Segment signal output terminals for LCD panel.
Together with COM1 to COM4, a matrix is formed
that can display a maximum of 100 segments.
S17 to S25 are usable as I/O port by program.
Signals for key matrix and the segment signals from
pins S22/KR3 to S25/KR0 are output on a time
sharing basis.
4 4 16 key matrix can be created in conjunction
with key inport ports K0 to K3.
30~32
P9-1~P9-3
I/O port 9
3-bit I/O port, capable of input/output setup for each
bit via software.
33
IN2
Input port 2
1-bit input port
34~37
K0~K3
Key input port
4-bit input port for key matrix input, capable of
inputting a maximum of 4 4 16 key data in
combination with the key return timing outputs (KR0
to KR3) of an LCD segment pin.
Comprises an A/D comparator making it possible to
select high impedance with pull-down and pull-up
pins for inputs, and to perform programming with a
3-bit input threshold. This allows various key
matrices to be formed.
Also usable as a 4-channel 3-bit A/D converter with
a successive comparison formula via software.
When an “H” level is applied in key input ports set
to pull-down mode, WAIT mode is canceled.
V
LCD
V
LCD
V
EE
V
LCD
n
instructio
Input
n
instructio
Input
n
instructio
Input
R
IN1
R
IN1
Comparator
Reference
voltage
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