ADM1030ARQ-REEL ON Semiconductor, ADM1030ARQ-REEL Datasheet - Page 24

• Manufacturer Part Number: ADM1030ARQ-REEL
• Description: IC SNSR TEMP/FAN PWM CTRL 16QSOP
• Manufacturer: ON Semiconductor

Specifications of ADM1030ARQ-REEL

• Rohs Status: RoHS non-compliant
• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 100°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP

ADM1030
Bit
0
1
2
3
4
6–5 PWM Mode
7
Bit
0
1
2
3
4
5
6
7
Name
MONITOR
INT Enable
TACH/AIN
PWM Invert
Fan Fault Enable
Auto/SW Ctrl
Name
PWM 1 En
Unused
TACH 1 En
Unused
Loc Temp En
Remote Temp En
Unused
SW Reset
R/W
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Table XIV. Register 0x00 Configuration Register 1 Power-On Default 90h
Table XV. Register 0x01 Configuration 2 Power-On Default = 7FH
R/W
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Clearing this bit to “0” selects digital fan speed measurement via the TACH pins. Setting
Description
Setting this bit to a “1” enables monitoring of temperature and enables measurement of
the fan tach signals. (Power-Up Default = 0.)
Setting this bit to a “1” enables the INT output. 1 = Enabled 0 = Disabled (Power-Up
Default = 0).
this bit to “1” configures the TACH pins as analog inputs that can measure the speed of
2-wire fans via a sense resistor. (Power-Up Default = 0.)
Setting this bit to “1” inverts the PWM signal on the output pin. (Power-Up Default =
0). The power-up default makes the PWM_OUT pin go low for 100% duty cycle (suitable
for driving the fan using a PMOS device). Setting this bit to “1” makes the PWM_OUT
pin high for 100% duty cycle (intended for driving the fan using an NMOS device).
Logic 1 enables FAN_FAULT pin; Logic 0 disables FAN_FAULT output. (Power-Up
Default = 1.)
These two bits control the behavior of the fan in Auto Fan Speed Control Mode.
Logic 1 selects Automatic Fan Speed Control; Logic 0 selects SW control. (Power-Up
Default = 1) When under software control, PWM duty cycle or RPM values may be
programmed for the fan.
00 = Remote Temp controls Fan. (Program PWM duty cycle in Software Mode.)
11 = Fastest Calculated Speed Controls Fan. (Program RPM speed in Software Mode.)
Rev. 2 | Page 24 of 29 | www.onsemi.com
Enables Interrupts on Remote Channel when set to “1.” Default is normally
Description
Enables fan PWM output when this bit is a “1.”
Unused.
Enables Tach input when set to “1.”
Enables Interrupts on Local Channel when set to “1.”
enabled, except when a diode fault is detected on power-up.
Unused.
When set to “1,” resets the device. Self-clears. Power-Up Default = 0.
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