MAX6664AEE+ Maxim Integrated Products, MAX6664AEE+ Datasheet - Page 15

• Manufacturer Part Number: MAX6664AEE+
• Description: IC TEMP MON FAN CNTRL 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6664AEE+

• Function: Fan Control, Temp Monitor
• Topology: ADC, Multiplexer, Register Bank, Tachometer
• 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: 16-QSOP
• Full Temp Accuracy: +/- 1 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 11 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Addr(H)
00
01
READ/WRITE POR STATE
R/W
R/W
______________________________________________________________________________________
0000 1001
0111 1111
MAX6653
MAX6663
00000001
MAX6664
10010001
Configuration register 2:
Bit 7: Reset:
Bit 6: Unused.
Bit 5: Remote temperature enable:
Bit 4: Local temperature enable:
Bit 3: INT input function mask:
Bit 2: TACHOMETER input enable:
Bit 1: SMBus timeout enable:
Bit 0: PWM out enable:
Configuration register 1:
Bits [7:5]: Setting the fan-speed control mode:
Bit 7 = 1: Enables automatic fan-speed control mode.
Bits [6:5] = 00: Remote temperature controls the fan speed.
Bits [6:5] =11: Both remote and local temperature control the fan speed.
Bit 7 = 0, Enables PWM control mode or RPM control mode.
Bits [6:5] = X0: PWM duty cycle control mode.
Bits [6:5] = X1: RPM control mode.
Bit 4: FAN_FAULT output enable:
Bit 3: Invert the PWM output:
Bit 2: TACHOMETER digital/analog input selection:
Bit 1: INT output enable:
Bit 0: Monitoring:
Setting this bit to 1 restores all registers to POR default states; self-clears to zero
0: interrupts disabled for remote channel; 1: interrupts enabled for remote
0: (default) PWM active low; 1: (inverted) PWM active high.
0: (default) TACHOMETER is a logic input; 1: TACHOMETER is an analog input.
0: INT output disabled; 1: INT output enabled.
0: sleep mode; 1: (default) active temperature monitoring and fan-speed control.
(Keep this bit set to 1 for MAX6663.) Although the default value of this bit is 1, fan
speed control for the MAX6653 and MAX6664 is inactive until a 1 is written
to this bit.
after reset.
channel; defaults to 1 unless a diode fault is detected on power-up.
0: interrupts disabled for local channel; 1: (default) interrupts enabled for local
channel.
0: enable INT input function; 1: (default) disable INT input function.
0: disable TACHOMETER input; 1: (default) enable the TACHOMETER input.
(Keep this bit set to 1 for MAX6663.)
0: SMBus timeout disabled; 1: (default) SMBus timeout enabled.
0: PWM output disabled; 1: (default) PWM output enabled.
1: FAN_FAULT output enabled; 0: (default) FAN_FAULT output disabled.
Temperature Monitors and
PWM Fan Controllers
DESCRIPTION
Register Summary
15