參數(shù)資料
型號: UPD4990AC-A
元件分類: 時鐘/數(shù)據(jù)恢復(fù)及定時提取
英文描述: 0 TIMER(S), REAL TIME CLOCK, PDIP14
封裝: DIP-14
文件頁數(shù): 24/51頁
文件大小: 211K
代理商: UPD4990AC-A
25
CHAPTER 4 EXPLANATION OF ELECTRICAL CHARACTERISTICS
4.3.2 Supply Voltage Characteristics
f/f
(ppm)
–4
Ta
CG
= 25°C
= 20 pF
–2
2
4
6
8
10
Supply Voltage (V)
6
2
4
CD = 10 pF
CD = 20 pF
CD = 30 pF
4.4 SUPPLY CURRENT CHARACTERISTICS
Measurement circuit of supply current and characteristics are shown Fig. 4-5 and Fig. 4-6.
Fig. 4-5 Measurement Circuit
VDD
XTAL
CG
XTAL
CD
X: 32.768 kHz
C1 = 20 k
(Crystal Impedance)
X
C0
C1
C2
OUT ENBL
Outputs are open.
CS
VSS
CLK
STB
DATA IN
A
V
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