HT48RA0-3/HT48CA0-3
Pin Description
Configuration
Pin Name I/O
Description
Option
Bidirectional 8-bit input/output port with pull-high resistors. Software instructions
determine if the pin is an NMOS output or Schmitt Trigger input.
¾
PA0~PA7 I/O
Bidirectional 2-bit input/output lines with pull-high resistors. Each individual bit
can be configured as a wake-up input by a configuration option. Software in-
structions determine if the pin is an NMOS output or Schmitt Trigger input.
PB0, PB1 I/O
Wake-up
Wake-up
5-bit Schmitt Trigger input lines with pull-high resistors. Each individual bit can
be configured as a wake-up input by a configuration option.
PB2~PB6
PB7
I
I
1-bit Schmitt trigger input lines without pull-high resistor. This bit can be config-
ured as a wake-up input by a configuration option.
Wake-up
REM
OSC1
VDD
VSS
O
I
Carrier output pin.
¾
OSC1 is connected to an external resistor for the internal system clock.
Positive power supply
¾
¾
¾
¾
Negative power supply, ground
¾
Absolute Maximum Ratings
Supply Voltage...........................VSS-0.3V to VSS+4.0V
Input Voltage..............................VSS-0.3V to VDD+0.3V
Storage Temperature............................-50°C to 125°C
Operating Temperature...........................-40°C to 85°C
IOH Total............................................................-100mA
I
OL Total ..............................................................150mA
Total Power Dissipation .....................................500mW
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum 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 exposure to extreme conditions may affect device reliability.
D.C. Characteristics
Ta=25°C
Test Conditions
Conditions
¾
Symbol
Parameter
Min.
Typ.
Max.
Unit
VDD
¾
VDD
IDD
ISTB
VIL
Operating Voltage
2.0
¾
3.6
1.5
V
mA
mA
V
¾
0.7
¾
No load, fSYS=4MHz
Operating Current
3V
Standby Current
3V No load, system HALT
1
¾
0.2VDD
VDD
2.0
Input Low Voltage for I/O Ports
Input High Voltage for I/O Ports
Low Voltage Reset Voltage
I/O Ports Sink Current
REM Output Source Current
Pull-high Resistance
3V
3V
¾
0
¾
¾
¾
¾
VIH
0.8VDD
1.8
4
V
¾
VLVR
IOL
1.9
8
V
VOL=0.1VDD
3V
3V
3V
mA
mA
kW
¾
IOH
VOH=0.9VDD
-5
-7
150
¾
RPH
100
200
¾
VDD Start Voltage to ensure
Power-on Reset
VPOR
100
mV
¾
¾
¾
¾
¾
¾
¾
VDD Rise Rate to ensure
Power-on Reset
RPOR
0.035
V/ms
¾
Rev.1.10
3
October 12, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
