HT45R38
Pin Name
VSS
VSSC
VDD
VDDB
OSC1
OSC2
I/O
¾
¾
¾
¾
I
O
Options
¾
¾
¾
¾
Description
Negative power supply, ground
Negative power supply for PC, ground
Positive power supply
Positive power supply PB
OSC1, OSC2 are connected to an RC network or Crystal determined by a
configuration option, for the internal system clock. In the case of the RC os-
cillator, OSC2 can be used to monitor the system clock. Its frequency is 1/4
system clock.
Crystal or RC
Note: *All pull-high resistors are controlled by an option bit.
Absolute Maximum Ratings
Supply Voltage ...........................V
SS
-0.3V
to V
SS
+6.0V
Input Voltage..............................V
SS
-0.3V
to V
DD
+0.3V
I
OL
Total ..............................................................300mA
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.
Storage Temperature ............................-50°C to 125°C
Operating Temperature...........................-40°C to 85°C
I
OH
Total............................................................-200mA
D.C. Characteristics
Symbol
Parameter
Test Conditions
V
DD
¾
3V
5V
5V
3V
Standby Current (WDT Enabled)
5V
I
STB2
V
IL1
V
IH1
V
IL2
V
IH2
V
LVR
I
OL1
3V
Standby Current (WDT Disabled)
5V
Input Low Voltage for I/O Ports,
TMR0, TMR1, INT0 and INT1
Input High Voltage for I/O Ports,
TMR0, TMR1, INT0 and INT1
Input Low Voltage (RES)
Input High Voltage (RES)
Low Voltage Reset
PA, PB, PE, RREF and CREF
Sink Current
PA, PC, PE, RREF and CREF
Source Current
¾
¾
¾
¾
¾
3V
5V
3V
5V
V
OH
=0.9V
DD
¾
¾
¾
¾
LVR enabled
V
OL
=0.1V
DD
No load, system HALT
No load, system HALT
No load, f
SYS
=8MHz
Conditions
f
SYS
=4MHz
f
SYS
=8MHz
No load, f
SYS
=4MHz
Min.
2.2
3.3
¾
¾
¾
¾
¾
¾
¾
0
0.7V
DD
0
0.9V
DD
2.7
4
10
-2
-5
Typ.
¾
¾
1
3
4
¾
¾
¾
¾
¾
¾
¾
¾
3.0
8
20
-4
-10
Max.
5.5
5.5
2
5
8
5
10
1
2
0.3V
DD
V
DD
0.4V
DD
V
DD
3.3
¾
¾
¾
¾
Ta=25°C
Unit
V
V
mA
mA
mA
mA
mA
mA
mA
V
V
V
V
V
mA
mA
mA
mA
V
DD
Operating Voltage
Operating Current
(Crystal OSC, RC OSC)
Operating Current
(Crystal OSC, RC OSC)
I
DD1
I
DD2
I
STB1
I
OH1
Rev. 1.00
4
December 13, 2006
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
