ADM1028ARQ ON Semiconductor, ADM1028ARQ Datasheet - Page 13

• Manufacturer Part Number: ADM1028ARQ
• Description: IC SENSOR TEMP/FAN CTRL 16QSOP
• Manufacturer: ON Semiconductor

Specifications of ADM1028ARQ

• Rohs Status: RoHS non-compliant
• Function: Fan Control, Temp Monitor
• Topology: ADC, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 100°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP

Register Name
Value Registers
Company ID
Revision
Configuration Register
Interrupt Status Register
Interrupt Mask Register
Manufacturer Test
Remote Function
Alert Status
Fan Speed Ramp Register
Address
0x13
0x14
0x15
0x17
0x18
0x19
0x26
0x27
0x37
0x38
0x39
0x3A
REV. B
Read/Write
Read/Write
Read/Write
Read/Write
Read Only
Read Only
Read/Write
Read Only
Read Only
Read/Write
Read/Write
Read/Write
Read/Write
0x3F
0xCO
Address A7–A0 in Hex
0x14–0x38
0x3E
0x40
0x41
0x43
0x44–0x4A
0x4B
0x4C
Programmable Internal Therm Automatic Trip Point—Default 127∞C. This register can only be
Test register for manufacturer’s use only. Do not write to this register.
Analog Output, FAN_SPD (Defaults to 0x00h).
External/Remote Temperature High Limit—Default +127∞C.
External/Remote Temperature Low Limit—Default –128∞C.
Internal Temperature High Limit—Default +127∞C.
Internal Temperature Low Limit—Default –128∞C.
Description
written to if the write once bit in the Configuration Register (0x40, Bit 3) has not been set.
Programmable Remote Thermal Diode Automatic Trip Point—Default 100∞C. This register
can only be written to if the write once bit in the Configuration Register (0x40, Bit 3) has
not been set.
Default Internal Therm Automatic Trip Point—Default 70∞C. Cannot be changed. Disabled
when Bit 3 of Configuration Register is set.
Default Remote Thermal Diode Automatic Trip Point—Default 100∞C. Cannot be changed.
Disabled when Bit 3 of Configuration Register is set.
External/Remote Temperature Value.
Internal Temperature Value.
Table IV. Registers 0x13–0x3A Value Registers
Table III. ADM1028 Registers
Comments
See Table IV
This location will contain the company identification number. This
register is read only.
This location will contain the revision number of the part in the
lower four bits of the register [3:0]. The upper four bits reflect the
ADM1028 Version Number [7:4]. The first version is 1101. The
next version of ADM1028 would be 1110, etc. For instance, if the
stepping were A0 and this part is an ADM1028, this register would
read 1101 0000. This register is read only.
See Table V. Power-on value = 0010 0001.
See Table VI. Power-on value = 0000 0000.
See Table VII. Power-on value = 0000 0000.
Test Registers for manufacturer’s use only. Do not write to these
registers.
See Table VIII. Power-on value = 0000 0000.
See Table IX. Power-on value = 0000 0000.
See Table X. Power-on value = 0000 0000.
–13–
ADM1028