參數(shù)資料
型號: HT49R30A-1
廠商: Holtek Semiconductor Inc.
英文描述: DISPL 7 SEG YELLOW
中文描述: 8位LCD型微控制器
文件頁數(shù): 5/43頁
文件大小: 353K
代理商: HT49R30A-1
Pad Name
I/O
Options
Description
OSC4
OSC3
O
I
RTC or
System Clock
Real time clock oscillators. OSC3 and OSC4 are connected to a 32768Hz
crystal oscillator for timing purposes or to a system clock source (depending
on the options).
VDD
Positive power supply
OSC2
OSC1
O
I
Crystal or RC
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
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.
RES
I
Schmitt trigger reset input, active low
Absolute Maximum Ratings
Supply Voltage..................................V
SS
0.3V to 5.5V*
Supply Voltage ................................V
SS
0.3V to 2.2V**
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.
* For HT49R30A-1/HT49C30-1
** For HT49C30L
D.C. Characteristics
V
DD
=1.5V for HT49C30L, V
DD
=3V & V
DD
=5V for HT49R30A-1 and HT49C30-1
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
V
DD
Operating Voltage
for HT49C30L
1.2
2.2
V
LVR disable
(for HT49R30A-1/HT49C30-1)
2.2
5.5
V
I
DD1
Operating Current
(Crystal OSC)
1.5V No load, f
SYS
=455kHz
60
100
A
3V
No load, f
SYS
=4MHz
1
2
mA
5V
3
5
mA
I
DD2
Operating Current
(RC OSC)
1.5V No load, f
SYS
=400kHz
50
100
A
3V
No load, f
SYS
=4MHz
1
2
mA
5V
3
5
mA
I
DD3
Operating Current
(f
SYS
=32768Hz)
1.5V
No load
2.5
4
A
3V
0.3
0.6
mA
5V
2
4
mA
I
STB1
Standby Current
(*f
S
=T1)
1.5V
No load, system HALT,
LCD off at HALT
0.1
0.5
A
3V
1
A
5V
2
A
HT49R30A-1/HT49C30-1/HT49C30L
Rev. 1.10
5
September 25, 2002
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