HT7500 datasheet(1/7 Pages) HOLTEK

Part #	HT7500

Description	Clinical Thermometer

PDF	7 Pages

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Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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HT7500

Clinical Thermometer

Block Diagram

Rev. 1.10

1

November 27, 2001

Features

· Single-chip CMOS construction

· Single 1.5V battery operation

· Measurement range: +32.0~+42.0°C

(+90.0~+108.0

°F)

Measurement accuracy:

±0.1°C(±0.2°F)

Resolution: 0.1

°C (0.1°F)

· Bonding option for Centigrade/Fahrenheit measure-

ment

· Alarm warning for fever

· Highest temperature hold

· Auto power off after 8 min 40 sec

· One-key input switch for ON/OFF

· Displays last time measured temperature

General Description

The HT7500 is a CMOS digital clinical thermometer IC

for measuring body temperature in Centigrade (

°C) or

Fahrenheit (

°F) mode by its bonding option. It also pro-

vides alarm and auto power off functions. The other

electronic components are LCD display, thermister,

1.5V battery, ON/OFF switch, buzzer, resistors and ca-

pacitors.

S y s t e m

O S C

C o u n t e r a n d

C o m p a r a t o r

T I M E R

C o n t r o l

C i r c u i t

S e n s o r

O S C

P u l s e

G e n e r a t o r

V o l t a g e

D o u b l e r

C o u n t e r ,

C o m p a r a t o r a n d

L a t c h

P u l s e

T a b l e

L C D D r i v e r

O S C I

O S C O

T E S T 2

P S W

C L . H

R .

R S

S C

V D D

V S S

C O M 1 ~ 3

S A 1 ~ S D 1

C 5 1 2

C A P

V E E

L O W C

B Z 1

B Z 2

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HT7500 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc

HT7500 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc

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