HP04S Datasheet, PDF (2/4 Pages) List of Unclassifed Manufacturers – Low cost and no external components required.

Storage temperature Tstg
HP04S Digit Pressure sensor Module v1.0
- 40
125
℃
Recommended Operation Condition
Parameter
Supply voltage
Operating current
StandBy current
Operate pressure range
Operating temperature range
CP pin frequency
Symbol
VDD
Iop
Istdby
Prng
Trng
Fcp
Condition Min Type Max Unit
2.4 3.0 3.6 V
VDD=3V
500 uA
VDD=3V
1
uA
750
-20 25
1100 Hpa
60
℃
10
KHz
Pressure and temperature output characteristic
Parameter
Resolution
Absolute pressure accuracy
Absolute pressure accuracy
Long term Stability
Temperature accuracy
Temperature accuracy
Symbol
Condition Min Type Max Unit
1
Hpa
750 – 1100
@
-3
0～50℃
3 Hpa
750 – 1100
@
-5
-20～60℃
5 Hpa
12 months
2
0～+50 -1
-20～+60 -2.0
Hpa
1
℃
2.0 ℃
Data translation.
1. The data translation is HEX format, MSB first. After Hp04s finished the conversation, DATA pin
would change from low level to high level(ACK). Once the control system detect ACK of DATA pin,
then control system serial output clock signal to read data.
2. if the temperature is 25.2℃, then the output data is: 04E4H[1000 + 252] (The first byte is 04h, the
second byte is E4H); if temperature is -10.3℃, then the output data is: 0381h [1000 + (-103)].
3. If the pressure is 1012hpa, then the output data is: 03F4H(The first byte is 03H, the second byte is
F4H).
Functional Description.
1. CS Pin. (Enable A/D Convertion input pin). If the CS keep Low level, the hp04m module keep in
waiting status; once the CS is High level, the hp04m module would enter A/D Convertion and
communication status.
2. CP pin. (Clock input pin from control system). When the clock is in falling edge, hp04s output data,
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