HT47C20 Holtek Semiconductor Inc, HT47C20 Datasheet - Page 6

• Manufacturer Part Number: HT47C20
• Description: 8-Bit Microcontroller
• Manufacturer: Holtek Semiconductor Inc

Absolute Maximum Ratings
Supply Voltage..............................-0.3V to 5.5V
Storage Temperature.................-50°C to 125°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-
D.C. Characteristics
Symbol
54
55
56
Pad No.
V
I
I
I
I
I
I
I
DD1
DD2
STB1
STB2
STB3
STB4
STB5
DD
mum Ratings² may cause substantial damage to the device. Functional operation of this de-
vice at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.
Operating Voltage
Operating Current
(Crystal OSC)
Operating Current (RC OSC)
Standby Current
(32.768kHz Crystal Oscillator
Enable, LCD Off)
Standby Current
(32.768kHz Crystal Oscillator
Enable, LCD On)
Standby Current
(Watchdog RC Oscillator
Enable, LCD Off)
Standby Current
(Watchdog RC Oscillator
Enable, LCD On)
Standby Current
(32.768kHz Crystal and
Watchdog RC Oscillator Both
Disabled, LCD Off)
VDD
OSC2
OSC1
Pad Name
Parameter
I/O
¾
O
I
Crystal or
Option
Mask
RC
¾
V
3V
3V
3V No load, system Halt
3V No load, system Halt
3V No load, system Halt
3V No load, system Halt
3V No load, system Halt
¾
DD
Positive power supply
OSC1 and OSC2 are connected to an RC network or a
crystal (by mask option) for the internal system clock.
A/D Off
No load, f
A/D Off
Test Conditions
No load, f
6
Input Voltage.................V
Operating Temperature ..............-40°C to 85°C
Conditions
SYS
SYS
¾
=455kHz
=455kHz
Function
Min. Typ. Max. Unit
2.4
¾
¾
¾
¾
¾
¾
¾
SS
-0.3V to V
0.2
0.2
¾
¾
¾
¾
¾
3
January 18, 2000
HT47C20
3.6
0.4
0.4
10
3
5
7
1
Ta=25°C
DD
+0.3V
mA
mA
mA
mA
mA
mA
mA
V