H49R50A-1 Datasheet, PDF (7/45 Pages) Holtek Semiconductor Inc – LCD Type 8-Bit MCU

HT49R50A-1/HT49C50-1/HT49C50L
A.C. Characteristics
V_DD=1.5V for HT49C50L, V_DD=3V & V_DD=5V for HT49R50A-1 and HT49C50-1
Ta=25°C
Symbol
Parameter
f_SYS1
System Clock
(Crystal OSC)
f_SYS2
System Clock
(RC OSC)
f_SYS3
System Clock
(32768Hz Crystal OSC)
f_RTCOSC RTC Frequency
f_TIMER Timer I/P Frequency
t_WDTOSC Watchdog Oscillator Period
t_RES
External Reset Low Pulse Width
t_SST
System Start-up Timer Period
t_LVR
Low Voltage Width to Reset
t_INT
Interrupt Pulse Width
Test Conditions
V_DD
Conditions
¾ 1.2V~2.2V (for HT49C50L)
¾ 2.2V~5.5V
¾ 3.3V~5.5V
¾ 1.2V~2.2V (for HT49C50L)
¾ 2.2V~5.5V
¾ 3.3V~5.5V
¾
¾
¾
¾
¾ 1.2V~2.2V (for HT49C50L)
¾ 2.2V~5.5V
¾ 3.3V~5.5V
1.5V
3V
¾
5V
For HT49C50L
¾
For HT49R50A-1/HT49C50-1
¾ Wake-up from HALT
¾
¾
For HT49C50L
¾
For HT49R50A-1/HT49C50-1
Min. Typ. Max.
400 ¾ 500
400 ¾ 4000
400 ¾ 8000
400 ¾ 500
400 ¾ 4000
400 ¾ 8000
¾ 32768 ¾
¾ 32768 ¾
0
¾ 500
0
¾ 4000
0
¾ 8000
35 70 140
45 90 180
32 65 130
10 ¾ ¾
1
¾¾
¾ 1024 ¾
1
¾¾
10 ¾ ¾
1
¾¾
Unit
kHz
kHz
kHz
kHz
kHz
kHz
Hz
Hz
kHz
kHz
kHz
ms
ms
ms
ms
ms
*t_SYS
ms
ms
ms
Note: *t_SYS= 1/f_SYS1, 1/f_SYS2 or 1/f_SYS3
Rev. 2.00
7
November 29, 2005