HT49R30A-1/HT49C30-1/HT49C30L
Pad Name
OSC4
OSC3
VDD
I/O
O
I
¾
Options
Description
Real time clock oscillators. OSC3 and OSC4 are connected to a 32768Hz
RTC or
crystal oscillator for timing purposes or to a system clock source (depending
System Clock
on the options).
¾
Positive power supply
OSC2
OSC1
O
I
OSC1 and OSC2 are connected to an RC network or a crystal (by options)
for the internal system clock. In the case of RC operation, OSC2 is the output
Crystal or RC terminal for 1/4 system clock.
The system clock may come from the RTC oscillator. If the system clock co-
mes from RTCOSC, these two pins can be floating.
¾
Schmitt trigger reset input, active low
RES
I
Absolute Maximum Ratings
Supply Voltage..................................V
SS
-0.3V
to 5.5V*
Storage Temperature ............................-50°C to 125°C
Operating Temperature ...........................-40°C to 85°C
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 reliabil-
ity.
²*²
For HT49R30A-1/HT49C30-1
²**²
For HT49C30L
Supply Voltage ................................V
SS
-0.3V
to 2.2V**
Input Voltage..............................V
SS
-0.3V
to V
DD
+0.3V
D.C. Characteristics
V
DD
=1.5V for HT49C30L, V
DD
=3V & V
DD
=5V for HT49R30A-1 and HT49C30-1
Symbol
Parameter
Test Conditions
V
DD
¾
Conditions
for HT49C30L
V
DD
Operating Voltage
LVR disable
(for HT49R30A-1/HT49C30-1)
Min.
1.2
2.2
¾
¾
¾
¾
¾
¾
¾
No load
¾
¾
¾
No load, system HALT,
LCD off at HALT
¾
¾
Typ.
¾
¾
60
1
3
50
1
3
2.5
0.3
2
0.1
¾
¾
Max.
2.2
5.5
100
2
5
100
2
5
4
0.6
4
0.5
1
2
Ta=25°C
Unit
V
V
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
1.5V No load, f
SYS
=455kHz
I
DD1
Operating Current
(Crystal OSC)
3V
5V
1.5V No load, f
SYS
=400kHz
I
DD2
Operating Current
(RC OSC)
3V
5V
1.5V
I
DD3
Operating Current
(f
SYS
=32768Hz)
3V
5V
1.5V
I
STB1
Standby Current
(*f
S
=T1)
3V
5V
No load, f
SYS
=4MHz
No load, f
SYS
=4MHz
Rev. 1.10
5
September 25, 2002
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
