Pad Name
I/O
Option
Description
PD0/PWM0
PD1/PWM1
I/O
Pull-high
I/O or PWM
Bidirectional 2-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without a pull-high resistor (de-
termined by pull-high option: port option). The PWM0/PWM1 output func-
tion are pin-shared with PD0/PD1 (dependent on PWM options).
RES
I
Schmitt trigger reset input. Active low.
VDD
Positive power supply
VSS
Negative power supply, ground.
OSC1
OSC2
I
O
Crystal
or RC
OSC1, OSC2 are connected to an RC network or a Crystal (determined by
options) for the internal system clock. In the case of RC operation, OSC2 is
the output terminal for 1/4 system clock.
TEST1
TEST2
TEST3
I
TEST mode input pin.
It disconnects in normal operation.
Absolute Maximum Ratings
Supply Voltage...........................V
SS
0.3V to V
SS
+6.0V
Storage Temperature............................ 50 C to 125 C
Input Voltage..............................V
SS
0.3V to V
DD
+0.3V
Operating Temperature........................... 40 C to 85 C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings 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 reliabil-
ity.
D.C. Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
V
DD
Operating Voltage
f
SYS
=4MHz
2.2
5.5
V
f
SYS
=8MHz
3.3
5.5
V
I
DD1
Operating Current
(Crystal OSC)
3V
No load, f
SYS
=4MHz
ADC disable
0.6
1.5
mA
5V
2
4
mA
I
DD2
Operating Current
(RC OSC)
3V
No load, f
SYS
=4MHz
ADC disable
0.8
1.5
mA
5V
2.5
4
mA
I
DD3
Operating Current
5V
No load, f
SYS
=8MHz
ADC disable
3
5
mA
I
STB1
Standby Current
(WDT Enabled)
3V
No load, system HALT
5
A
5V
10
A
I
STB2
Standby Current
(WDT Disabled)
3V
No load, system HALT
1
A
5V
2
A
V
IL1
Input Low Voltage for I/O Ports,
TMR and INT
0
0.3V
DD
V
V
IH1
Input High Voltage for I/O Ports,
TMR and INT
0.7V
DD
V
DD
V
V
IL2
Input Low Voltage (RES)
0
0.4V
DD
V
V
IH2
Input High Voltage (RES)
0.9V
DD
V
DD
V
HT46R23/HT46C23
Rev. 1.60
4
May 3, 2004