ADM1030ARQ-REEL7 ON Semiconductor, ADM1030ARQ-REEL7 Datasheet - Page 23

• Manufacturer Part Number: ADM1030ARQ-REEL7
• Description: IC SNSR TEMP/FAN PWM CTRL 16QSOP
• Manufacturer: ON Semiconductor

Specifications of ADM1030ARQ-REEL7

• 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

REV. A
Register Name
Value Registers
Device ID Register
Company ID
THERM Behavior/Revision
Configuration Register 1
Configuration Register 2
Status Register 1
Status Register 2
Manufacturer’s Test Register
Fan Characteristics Register 1
Fan Speed Configuration Register
Fan Filter Register
Local Temperature T
Remote Temperature T
Address
0x06
0x08
0x0A
0x0B
0x0D
0x0E
0x10
0x14
0x15
0x16
0x18
0x19
0x1A
Read/Write
Read/Only
Read/Write
Read/Only
Read/Only
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
MIN
MIN
/T
/T
RANGE
RANGE
Extended Temperature Resolution (see Table XVIII).
Fan Speed Reading—this register contains the fan speed tach measurement.
Local Temperature Value—this register contains the 8 MSBs of the local temperature measurement.
Remote Temperature Value—this register contains the 8 MSBs of the remote temperature reading.
Local Temperature Offset—See Table XXV.
Remote Temperature Offset—See Table XXVI.
Fan Tach High Limit—this register contains the limit for the fan tach measurement. Since
Local Temperature High Limit (Power-On Default 60 C).
Local Temperature Low Limit (Power-On Default 0 C).
Local Temperature Therm Limit (Power-On Default 70 C).
Remote Temperature High Limit (Power-On Default 80 C).
Remote Temperature Low Limit (Power-On Default 0 C).
Remote Temperature Therm Limit (Power-On Default 100 C).
Description
the tach circuit counts between pulses, a slow fan will result in a large measured value, so
exceeding the limit by one is the way to detect a slow or stalled fan. (Power-On Default = FFh)
Address A7–A0
in Hex
0x06–0x1A
0x3D
0x3E
0x3F
0x00
0x01
0x02
0x03
0x07
0x20
0x22
0x23
0x24
0x25
Table XIII. Value and Limit Registers
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Table XII. Registers
Comments
See Table XIII.
This location contains the device identification number. Since this
device is the ADM1030, this register contains 0x30. This register is
read only.
This location contains the company identification number (0x41).
This register is read only.
This location contains the revision number of the device. The lower
four bits reflect device revisions [3:0]. Bit 7 of this register is the
THERM-to-fan enable bit. See Table XXIV.
See Table XIV. Power-on value = 1001 0000.
See Table XV. Power-on value = 0111 1111.
See Table XVI. Power-on value = 0000 0000.
See Table XVII. Power-on value = 0000 0000.
This register is used by the manufacturer for test purposes only. This
register should not be read from or written to in normal operation.
See Table XIX. Power-on value = 0101 1101.
See Table XX. Power-on value = 0101 0101.
See Table XXI. Power-on value = 0101 0101.
See Table XXII. Power-on value = 0100 0001.
See Table XXIII. Power-on value = 0110 0001.
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ADM1030