HT49C30-1(2012) 데이터 시트보기 (PDF) - Holtek Semiconductor
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HT49C30-1 Datasheet PDF : 41 Pages
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HT49R30A-1/HT49C30-1/HT49C30L
A.C. Characteristics
VDD=1.5V for HT49C30L, VDD=3V & VDD=5V for HT49R30A-1 and HT49C30-1
Ta=25°C
Symbol
Parameter
Test Conditions
VDD
Conditions
Min. Typ. Max. Unit
¾ 1.2V~2.2V (for HT49C30L)
400 ¾ 500 kHz
fSYS1 System Clock (Crystal OSC)
¾ 2.2V~5.5V
400
4000 kHz
¾ 3.3V~5.5V
400 ¾ 8000 kHz
¾ 1.2V~2.2V (for HT49C30L)
400 ¾ 500 kHz
fSYS2 System Clock (RC OSC)
¾ 2.2V~5.5V
400 ¾ 4000 kHz
¾ 3.3V~5.5V
400 ¾ 8000 kHz
fSYS3
System Clock
(32768Hz Crystal OSC)
¾
¾
¾ 32768 ¾ Hz
fRTCOSC RTC Frequency
¾
¾
¾ 32768 ¾ Hz
¾ 1.2V~2.2V (for HT49C30L)
0
¾ 500 kHz
fTIMER Timer I/P Frequency
¾ 2.2V~5.5V
0
¾ 4000 kHz
¾ 3.3V~5.5V
0
¾ 8000 kHz
1.5V
35 70 140 ms
tWDTOSC Watchdog Oscillator Period
3V
¾
45 90 180 ms
5V
32 65 130 ms
For HT49C30L
10 ¾ ¾ ms
tRES
External Reset Low Pulse Width ¾
For HT49R30A-1/HT49C30-1 1
¾ ¾ ms
tSST
System Start-up Timer Period
¾ Wake-up from HALT
¾ 1024 ¾ *tSYS
tLVR
Low Voltage Width to Reset
¾
¾
0.25 1
2 ms
tINT
Interrupt Pulse Width
For HT49C30L
10 ¾ ¾ ms
¾
For HT49R30A-1/HT49C30-1 1
¾ ¾ ms
Note: *tSYS= 1/fSYS1, 1/fSYS2 or 1/fSYS3
Rev. 2.10
7
July 30, 2012
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