參數(shù)資料
型號(hào): UPD4990AG
廠商: NEC Corp.
英文描述: SERIAL I/O CALENDAR & CLOCK CMOS LSI
中文描述: 串行I / O日歷
文件頁數(shù): 14/20頁
文件大?。?/td> 129K
代理商: UPD4990AG
μ
PD4990A
14
POWER SUPPLY CIRCUIT
μ
PD4990A
2SC945
1SS53
1SS53
Ni
Cd
TP
D
OUT
510
CS
OE
DIN
CLK
STB
X
TAL
X
TAL
3.6 V
V
DD
V
SS
C
0
C
1
C
2
32.768 kHz
C
G
= 20 pF
C
D
= 5 to 30 pF
1 k
10 k
10 k
15 k
+5 V
+5 V
GND
4.7 k
2SA733
Power
Fail
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