LCD Type MCU
Symbol
Parameter
Test Conditions
V
DD
1.5V
t
WDTOSC
Watchdog Oscillator Period
3V
5V
External Reset Low Pulse
Width
System Start-up Timer Period
Low Voltage Width to Reset
(For HT49C30L, HT49C50L,
HT49C70L)
(Except HT49C30L,
HT49C50L, HT49C70L)
Wake-up from HALT
¾
(For HT49C30L, HT49C50L,
HT49C70L)
(Except HT49C30L,
HT49C50L, HT49C70L)
¾
Conditions
Min.
35
45
32
10
1
¾
0.25
10
1
Typ.
70
90
65
¾
¾
1024
1
¾
¾
Max.
140
180
130
¾
¾
¾
2
¾
¾
Unit
ms
ms
ms
ms
ms
*t
SYS
ms
ms
ms
t
RES
¾
t
SST
t
LVR
¾
¾
t
INT
Interrupt Pulse Width
¾
*t
SYS
= 1/f
SYS1
, 1/f
SYS2
or 1/f
SYS3
HT49RU80/HT49CU80
Symbol
Parameter
Test Conditions
V
DD
¾
¾
¾
¾
¾
¾
¾
¾
3V
5V
t
RES
t
SST
t
LVR
t
INT
External Reset Low Pulse
Width
System Start-up Timer Period
Low Voltage Width to Reset
Interrupt Pulse Width
¾
¾
¾
¾
2.2V~5.5V
3.3V~5.5V
¾
¾
¾
Wake-up from HALT
¾
¾
Conditions
2.2V~5.5V
3.3V~5.5V
2.2V~5.5V
3.3V~5.5V
¾
¾
Min.
400
400
400
400
¾
¾
0
0
45
32
1
¾
0.25
1
Typ.
¾
¾
¾
¾
32768
32768
¾
¾
90
65
¾
1024
1
¾
Ta=25°C
Max.
4000
8000
4000
8000
¾
¾
4000
8000
180
130
¾
¾
2
¾
Unit
kHz
kHz
kHz
kHz
Hz
Hz
kHz
kHz
ms
ms
ms
*t
SYS
ms
ms
f
SYS1
System Clock (Crystal OSC)
f
SYS2
f
SYS3
System Clock (RC OSC)
System Clock
(32768Hz Crystal OSC)
f
RTCOSC
RTC Frequency
f
TIMER
Timer I/P Frequency
(50% Duty)
t
WDTOSC
Watchdog Oscillator Period
*t
SYS
= 1/f
SYS1
, 1/f
SYS2
or 1/f
SYS3
20
Home Index Bookmark Pages Text
Previous Next
Pages: Home Index