MAX6660EVKIT Maxim Integrated Products, MAX6660EVKIT Datasheet - Page 17

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MAX6660EVKIT

Manufacturer Part Number
MAX6660EVKIT
Description
EVAL KIT FOR MAX6660
Manufacturer
Maxim Integrated Products
Datasheets

Specifications of MAX6660EVKIT

Sensor Type
Temperature, Fan Controller
Sensing Range
-40°C ~ 125°C
Interface
SMBus (2-Wire/I²C)
Sensitivity
±1°C
Voltage - Supply
3 V ~ 5.5 V
Embedded
No
Utilized Ic / Part
MAX6660
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Table 12. Fan Count Divisor Register (RFCD/WFCD)
Notes: This byte sets the prescalar division ratio for tachometer or current-sense feedback. (This register does not apply to the tach
Figure 7. MAX6660 Fan Loop Functional Diagram
REGISTER/
COMMAND
ADDRESS
POR State
signal used in the Fan-Speed register). Select this value such that the fan frequency (RPM/60 x number of poles) divided by
the FCD falls in the 33Hz to 66Hz range. See TACH IN section.
Bits 1, 0: 00 = divide by 1, 01 = divide by 2, 10 = divide by 4, 11 = divide by 8.
Bit
Fan-Speed Regulator with SMBus Interface
Remote-Junction Temperature-Controlled
______________________________________________________________________________________
REF FREQUENCY
8415Hz
TACH IN
7
0
1/2/4/8
FCD
127/255
FS
6
0
UP/DOWN
TEMPDATA
4/5/6
1/64
DAC
FG
5
0
READ LIMIT/FAILURE REGISTER
FCD (1Dh = READ, 1Eh = WRITE)
DRIVER
FAN OPEN/CLOSED
4
0
COUNTER
LOOP
FTC
3
0
N
COMPARATOR
FAN FAIL
FTCL
FAN
2
0
VFAN
1
0
0
1
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