f75373 Feature Integration Technology Inc., f75373 Datasheet - Page 10

• Manufacturer Part Number: f75373
• Description: Fintek Hardware Monitor Ic Datasheet
• Manufacturer: Feature Integration Technology Inc.

5.2 Access Interface
Serial Bus is configurable by using power-on trapping. The pin 3 (PWMOUT1/ADDR_TRAP) is multi-function pin.
During power-on, this pin serves as input detection of logic high or logic low. This pin is default pull-down resistor with
100K ohms mapping the Serial Bus address 0x5A (0101_1010). Another Serial Bus address 0x5C (0101_1100) is
set when external pull-up resistor with 10K ohms is connected in this pin.
(a)
The F75373S provides one serial access interface, Serial Bus, to read/write internal registers. The address of
Serial bus write to internal address register followed by the data byte
Fintek
SCL
SDA
Voltage Inputs
Start By
Master
Typical Thermister
Connection
0
0
Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte
1
Serial Bus Address Byte
VIN (Lower than 2.048V)
VIN(Higher than 2.048V)
0
SCL
SDA (Continued)
3VCC
Frame 1
1
(Continued)
Figure 5-3
1
R THM
10K, 25 C
R
0
10K, 1%
1
(directly connect to the chip)
(directly connect to the chip)
R/W
7
0
D7
R1
5
373S
Ack
D6
8
by
VIN1(Max2.048V)
R2
VREF
0
D7
D5
Feature Integration Technology Inc.
D6
D4
Internal Index Register Byte
Pin 14/15
D5
D3
Data Byte
Frame 3
Pin 13
Frame 2
D2
D4
D3
D1
50K
7.8125mV LSB
50K
8-bit ADC
D2
7
D0
with
D1
8
VIN3.3
7
D0
Master
Stop
by
373S
Ack
8
by
F75373
V0.25P