cef13n5 Hope Microelectronics co., Ltd, cef13n5 Datasheet - Page 4

• Manufacturer Part Number: cef13n5
• Description: Barometer Module
• Manufacturer: Hope Microelectronics co., Ltd

Hope RF
2006-12-15
For altitude measurement system, recommend to use P=X*100/2^5+C7*10 So that better
altitude resolution can be achieved
Step 2: (2
Example:
C1=29908
C2=3724
C3=312
C4=1465
C5=9191
C6=3990
C7=2500
D1=30036
D2=4107
dUT = 4107-9191 = -5084
T=250-3990*5084/2^16 = -59
OFF = (3724 + (1465-2048) * (-5084) / 2^14) * 4 =15619
SENS= 29908 + 312 * (-5084) / 2^10 = 28359
X= 28359 * (30036-7168) / 2^14 – 15619 = 23963
P= 23963 * 10 /2^5 + 2500 = 9918 = 9988
T2=11*3990*59^2/2^26=2
P2=3*2*(9988-3500)/2^14=2
T=-59-2 = -61= -6.1C
P=9988-2=9986=998.6hpa
T>450
T<0
0=<T=<450
P=P-P2
T=T-T2
Tel: [phone] Fax: [phone] E-mail: [e-mail]
nd
order temperature and pressure compensation)
T2=3*C6*(450-T)^2 / 2^26
T2=11*C6*(0-T)^2 / 2^26
T2=0
BAROMETER MODULE
PRELIMINARY
P2=3*T2*(P-3500)/2^14
P2=3*T2*(P-3500)/2^14
P2=0
http://www.hoperf.com
Version: 1.1
HP03S.doc
4