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參數(shù)資料
| 型號(hào)： | UPD16454AP |
| 廠商： | NEC Corp. |
| 英文描述： | MOS INTEGRATED CIRCUIT |
| 中文描述： | 馬鞍山集成電路 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 113K |
| 代理商： | UPD16454AP |
3
μ
PD16454A
PIN FUNCTION
Symbol
Pin No.
Input/Output
Connect to
Function
RS
138
Input
CPU
Register selection signal
‘0’ instruction register (IR)
‘1’ data register (DR)
E
139
Input
CPU
Data reading signal
Reads data at the falling edge.
TEST
140
Input
Test pin
‘1’ = test mode
‘0’ or open = normal operation
BF
145
Output
CPU
When busy flag is ‘1’, indicates that internal part of
LCD is currently operating.
In test mode, functions as test output.
DB
0 to 3
141 to 144
Input/Output
CPU
Data input signals
In test mode, function as output pin.
RESET
137
Input
CPU
Reset is performed with reset signal ‘0’
CLK
146
Input
CPU
LCD-driving clock
COM
1 to 14
128 to 134, 7 to 1
Output
LCD
Common signals
SEG
1 to 120
127 to 68, 8 to 67
Output
LCD
Segment signal outputs
V
1 to 5
153 to 157
Power supply
LCD-driving supply voltages
V
CC1
148
Power supply
Power supply for logic circuits
V
CC2
136
Power supply
Power supply for logic circuits
V
DD
135
Power supply
Boosted power supply
GND1
147
Power supply
Ground for logic circuit
GND2
158
Power supply
Ground for high-voltage circuit
V
IN
(+)
151
Power supply
Reference voltage supply
V
IN
(
)
152
LCD-driving supply voltage adjustment input
C (+)
149
Capacitor
Capacitor connection pin for booster
C (
)
150
Capaditor
Capacitor connection pin for booster
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