HT7501 查看數據表（PDF） - Holtek Semiconductor

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HT7501

Clinical Thermometer

Holtek Semiconductor 

HT7501

Absolute Maximum Ratings

Supply voltage.................................... 0V to 2.0V

Operation Temperature............. –20°C to +75°C

Input voltage ............... VSS–0.5V to VDD+0.5V

Storage Temperature................ –55°Cto +125°C

Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maxi-

mum 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 reliability.

Electrical Characteristics

Symbol

Parameter

Test Conditions

VDD Conditions

VDD

Operating Voltage

—

—

IDD

Operating Current

1.5V No load

ISTB

Standby Current

1.5V

—

fOSC

Oscillating Frequency

1.5V ROSC=820kΩ

R°C

Temperature Measurement

Accuracy at Range 35°C~39°C

—

—

Ta=25°C

Min. Typ. Max. Unit

1.3 1.5 1.65 V

—

60 100 µA

—

—

1.0 µA

25.6 32 38.4 kHz

–0.1

—

0.1 °C

LCD Electrode Pattern

SA1 SA2 SA3 SB1 SB2 SB3 SC1 SC2 SC3 SD1 SD2 SD3 SE1

COM1 F1 A1 B1 F2 A2 B2 F3 A3 B3 F4 A4 B4 A5

COM2 E1 G1 C1 E2 G2 C2 E3 G3 C3 E4 G4 C4 B5

COM3 H1 D1 — — D2 H2 — D3 — I4 D4 H4 C5

Note: 1/3 duty, 1/2 bias (LCD uses 3V)

4

8th Feb ’99

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