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HT1381 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

No. de pieza HT1381
Descripción Electrónicos  Serial Timekeeper Chip
PDF  10 Pages
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Fabricante Electrónico  HOLTEK [Holtek Semiconductor Inc]
Página de inicio  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT1381 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc

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D.C. Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VDD
Conditions
VDD
Operating Voltage
¾¾
2
¾
5.5
V
ISTB
Standby Current
2V
¾
¾¾
100
nA
5V
¾¾
100
nA
IDD
Operating Current
2V
No load
¾
0.7
1.0
mA
5V
¾
0.7
1.2
mA
IOH
Source Current
2V
VOH=1.8V
-0.2
-0.4
¾
mA
5V
VOH=4.5V
-0.5
-1.0
¾
mA
IOL
Sink Current
2V
VOL=0.2V
0.7
1.5
¾
mA
5V
VOL=0.5V
2.0
4.0
¾
mA
VIH
²H² Input Voltage
5V
¾
2
¾¾
V
VIL
²L² Input Voltage
5V
¾¾
¾
0.8
V
fOSC
System Frequency
5V
32768Hz X¢TAL
¾
32768
¾
Hz
fSCLK
Serial Clock
2V
¾
¾¾
0.5
MHz
5V
¾¾
2
MHz
* ISTB is specified with SCLK, I/O, REST open. The clock halt bit must be set to logic 1 (oscillator
disabled).
A.C. Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions
Min.
Max.
Unit
VDD
Conditions
tDC
Data to Clock Setup
2V
¾
200
¾
ns
5V
¾
50
¾
tCDH
Clock to Data Hold
2V
¾
280
¾
ns
5V
¾
70
¾
tCDD
Clock to Data Delay
2V
¾¾
800
ns
5V
¾¾
200
tCL
Clock Low Time
2V
¾
1000
¾
ns
5V
¾
250
¾
tCH
Clock High Time
2V
¾
1000
¾
ns
5V
¾
250
¾
fCLK
Clock Frequency
2V
¾¾
0.5
MHz
5V
¾
D.C.
2.0
HT1380/HT1381
3
October 2, 1999



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