HT47C20-1 데이터 시트보기 (PDF) - Holtek Semiconductor
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HT47C20-1 Datasheet PDF : 41 Pages
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HT47R20A-1/HT47C20-1
Pad Name I/O Option
Function
OSC4
OSC3
O
I
RTC or
System
Clock
Real time clock oscillators
OSC3 and OSC4 are connected to a 32768Hz crystal oscillator for timing pur-
poses or to a system clock source (depending on the options).
RES
I
¾
Schmitt trigger reset input. Active low.
VSS
¾
¾
Negative power supply, ground
VDD
¾
¾
Positive power supply
TEST1~3
I
¾
Test mode input pin it disconnects in normal operation.
Absolute Maximum Ratings
Supply Voltage ...........................VSS-0.3V to VSS+6.0V
Input Voltage..............................VSS-0.3V to VDD+0.3V
Storage Temperature ............................-50°C to 125°C
Operating Temperature...........................-40°C to 85°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
D.C. Characteristics
Symbol
Parameter
VDD
Operating Voltage
IDD1
Operating Current
(Crystal OSC)
IDD2
IDD3
IDD4
ISTB1
ISTB2
ISTB3
Operating Current
(RC OSC)
Operating Current
(Crystal OSC, RC OSC)
Operating Current
(fSYS=32768Hz)
Standby Current
(*fS=T1)
Standby Current
(*fS=32.768kHz OSC)
Standby Current
(*fS=WDT RC OSC)
ISTB4
Standby Current
(*fS=32.768kHz OSC)
ISTB5
Standby Current
(*fS=32.768kHz OSC)
Test Conditions
VDD
Conditions
fSYS=4MHz
¾
fSYS=8MHz
3V
No load, fSYS=4MHz
5V
3V
No load, fSYS=4MHz
5V
5V No load, fSYS=8MHz
3V
No load
5V
3V No load, system HALT,
5V LCD off at HALT
3V No load, system HALT,
5V LCD On at HALT, C type
3V No load, system HALT
5V LCD On at HALT, C type
3V No load, system HALT,
LCD on at HALT, R type,
5V 1/2 bias
3V No load, system HALT,
LCD on at HALT, R type,
5V 1/3 bias
Min.
2.2
3.3
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
Ta=25°C
Typ. Max. Unit
¾
5.5
V
¾
5.5
V
0.7 1.5 mA
1.7
3
mA
0.7 1.5 mA
1.7
3
mA
4
8
mA
0.25 0.5 mA
0.8 1.5 mA
¾
1
mA
¾
2
mA
2.5
5
mA
10
20
mA
2
5
mA
6
10
mA
17
30
mA
34
60
mA
13
25
mA
28
50
mA
Rev. 1.80
4
June 23, 2008
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