f75387 Feature Integration Technology Inc., f75387 Datasheet - Page 12

• Manufacturer Part Number: f75387
• Description: ?1o C Accuracy H/w Monitor Ic With Automatic Fan Speed Control
• Manufacturer: Feature Integration Technology Inc.

6.6.
The temperature data format is 11-bit unsigned for thermal sensor. The 8-bit temperature data can be obtained by
reading through two registers. The format of the temperature data is as below
6.7.
The F75387 can connect two thermistors to measure environment temperature or remote temperature. The
specification of thermistor should be considered to (1) β value is 3435K (2) resistor value is 10K ohm at 25°C. In
the Figure 6-1, the thermistor is connected by a serial resistor with 10K ohm, then connected to VREF (pin13).
Temperature Measurement Machine
Monitor Temperature from thermistor
Temperature ( High Byte )
Remote-sensor transistor manufacturers
Manufacturer
Panasonic
Philips
100°C
140°C
25°C
50°C
75°C
90°C
0°C
1°C
+25.125 ° C
Temperature
+125.5 ° C
+2.875 ° C
+1.25 ° C
+0.0 ° C
Digital Output
0000 0000
0000 0001
0001 1001
0101 1010
0011 0010
0100 1011
0110 0100
1000 1100
2SB0709 2N3906
PMBT3906
Model Number
0001,1001.001
0000,0001.010
0111,1101.100
0000,0010.111
11-Bit Binary
0000,0000
10
Temperature ( Low Byte )
8-Bit Digital Output
0.125°C
0.250°C
0.375°C
0.500°C
0.625°C
0.750°C
0.875°C
0°C
11-Bit Hex
7D.8h
19.2h
02.Eh
01.4h
00.0h
Digital Output
000 0 0000
001 0 0000
010 0 0000
100 0 0000
101 0 0000
011 0 0000
110 0 0000
111 0 0000
July, 2007
F75387
0.27P