MAX6641AUB94+ Maxim Integrated Products, MAX6641AUB94+ Datasheet - Page 7

• Manufacturer Part Number: MAX6641AUB94+
• Description: IC TEMP MONITOR SMBUS 10UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX6641AUB94+

• Function: Fan Control, Temp Monitor
• Topology: ADC, PWM Generator, Tach Counter
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Full Temp Accuracy: +/- 4 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 8 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 1. Register Functions (continued)
X = Don’t care. See register descriptions for further details.
WRITE
READ/
R/W
R/W
R/W
R/W
R/W
R
R
R
SMBus-Compatible Temperature Monitor with
REGISTER
ADDRESS
0Ch
0Dh
0Eh
FDh
FEh
0Fh
10h
FFh
_______________________________________________________________________________________
0000 0000
0000 0001
1000 0111
0100 1101
0000 xxxx
0101 xxxx
101x xxxx
010x xxxx
STATE
POR
Automatic PWM Fan-Speed Controller
rate of change
configuration
manufacturer
Read device
FUNCTION/
temperature
Local-diode
Duty-cycle
Duty-cycle
frequency
device ID
step size
fan-start
revision
NAME
select
PWM
Read
Read
Fan
ID
H yster esi s:
(+128 C)
1 = 10 C
Select A
0 = 5 C ,
MSB
MSB
MSB
D7
0
1
0
step: 0 =
1 C, 1 =
Select B
(+64 C)
Temp
2 C
D6
—
—
0
0
1
Fan control:
1 = remote
Select C
(+32 C)
LSB
D5
—
0
0
0
1 = local
(+16 C)
control:
LSB
Fan
D4
X
X
0
0
0
(+8 C)
D3
X
X
X
X
0
0
1
(+4 C)
D2
X
X
X
X
0
1
1
(+2 C)
D1
X
X
X
X
0
1
0
(+1 C)
LSB
D0
X
X
X
X
1
1
1
7