參數(shù)資料
型號: HT7501
廠商: Holtek Semiconductor Inc.
元件分類: 溫度傳感器
英文描述: Clinical Thermometer
中文描述: 體溫計
文件頁數(shù): 3/7頁
文件大小: 238K
代理商: HT7501
Pad Description
Pad No.
Pad Name
I/O
F unction
1~3
SA1~SA3
O
LCD segment drive
4~6
SB1~SB3
O
LCD segment drive
7~19
SC1~SC3
O
LCD segment drive
10~12
SD1~SD3
O
LCD segment drive
13
SE 1
O
LCD segment drive
14
VE E
O
Generate negative voltage (–1.5V)
15
CAP
O
For negative voltage, NMOS output
16
C512
O
For negative voltage, inverter output
17
TV
B
Test pin for IC
18
TE ST1
I
Test pin for IC
19
LOWC
B
For the supply voltage detector. Open the pin when not in use.
20
VSS
I
Power supply GND
21
SC
B
Common point, NMOS open drain
22
RF
O
Connect reference resistor, PMOS open drain
23
RS
O
Connect sensor resistor, PMOS open drain
24
VDD
I
Positive power supply
25
PSW
I
Pull low input pin, push switch to turn the power on or off
26
TE ST2
I
Pull low test pin, for production test, floating LCD displays
the real time value, when connected to VDD, LCD displays
the highest value.
27
ML
I
Connect to VDD for memory function, otherwise floating.
28
FE VL
I
Floating with fever function, otherwise connect to VDD.
29
S804K L
I
Floating buzzer is 4kHz, connect to VDD if buzzer is 8kHz.
30
OSCI
I
For system oscillator in
31
OSCO
O
For system oscillator out
32
BZ1
O
Buzzer output 1
33
BZ2
O
Buzzer output 2
34~36
COM1~COM3
O
LCD backplane drive, 3-level voltage out
HT7501
3
8th Feb ’99
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