HT49R50 Holtek Semiconductor Inc, HT49R50 Datasheet - Page 7

• Manufacturer Part Number: HT49R50
• Description: 8-Bit Microcontroller
• Manufacturer: Holtek Semiconductor Inc

Absolute Maximum Ratings
Supply Voltage........................V
Input Voltage .................V
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-
D.C. Characteristics
Symbol
V
I
I
I
I
V
V
V
V
I
DD1
DD2
STB1
STB2
OL
DD
IL
IH
IL1
IH1
mum 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 expo-
sure to extreme conditions may affect device reliability.
Standby Current
(RTC Disable, LCD OFF)
Operating Voltage
Operating Current
(Crystal OSC)
Operating Current (RC OSC)
Standby Current
(RTC Enable, LCD ON)
I/O Port Input Low Voltage
I/O Port Input High Voltage
Input Low Voltage
(RES, INT0, INT1, TMR0, TMR1)
Input High Voltage
(RES, INT0, INT1, TMR0, TMR1)
I/O Ports Sink Current
Parameter
SS
-0.3V to V
SS
-0.3V to 5.5V
DD
+0.3V
V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
¾
DD
Test Conditions
7
Storage Temperature.................-50°C to 125°C
Operating Temperature ..............-25°C to 70°C
No load,
f
No load,
f
No load,
system halt
No load,
system halt
RES=0.5V
INT0/1=0.3V
TMR0/1=0.3V
0.8V
V
V
V
V
SYS
SYS
DD
OL
DD
OL
Conditions
=4MHz
=2MHz
=0.3V
=0.5V
=3V,
=5V,
DD
¾
¾
¾
¾
¾
DD
DD
DD
Min.
2.2
2.1
3.5
2.4
4.0
1.5
¾
¾
¾
¾
¾
¾
¾
¾
0
0
0
0
4
Typ.
0.75
2.5
1.5
2.5
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
1
6
August 18, 1999
1.5/0.9
2.5/1.5
Max. Unit
HT49C50
5.2
1.5
0.9
1.5
10
¾
¾
2
5
3
5
1
2
3
5
3
5
Ta=25°C
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
V
V
V
V
V
V
V
V
V