MIC280 MICREL [Micrel Semiconductor], MIC280 Datasheet - Page 20

• Manufacturer Part Number: MIC280
• Description: Precision IttyBitty Thermal Supervisor
• Manufacturer: MICREL [Micrel Semiconductor]

Each LSB represents one degree centigrade. The values are in a two’s complement binary format such that 0°C is reported
as 0000 0000
Any writes to a temperature limit register will result in the corresponding fault queue being purged and reset.
MIC280
read/write
read-only
read only
BIT(S)
D[7]
D[7:0]
D[7]
D[7:0]
D[7]
Bit(s)
D[7:0]
Bit
0
b
. SeeTemperature Data Format (above) for more details.
Power-up default value:
Read/Write command byte:
Power-up default value:
Read command byte:
Power-up default value:
Read command byte:
Function
Over-temperature limit for the local zone.
FUNCTION
Identifies Micrel as the manufacturer of the device. Always returns 2A
Function
Identifies the device revision number
read/write
read-only
read only
D[6]
D[6]
D[6]
0
read/write
read only
read-only
Local Over-Temperature Limit Register (CRIT0)
D[5]
D[5]
D[5]
1
Local Over-Temperature Limit Register
Manufacturer ID Register (MFG_ID)
Die Revision Register (DIE_REV)
Over-temperature limit for local zone.
MIC280 DIE REVISION NUMBER
read/write
read only
read-only
0100 0110
0010 0000
0010 1010
1111 1110
[Device revision number]
1111 1111
Manufacturer ID Register
D[4]
D[4]
D[4]
Die Revision Register
0
8-bits, read/write
8-bits, read only
8-bits, read only
b
b
b
b
b
20
= FF
= FE
= 46
= 20
= 2A
read/write
read only
reserved
D[3]
D[3]
D[3]
h
h
h
h
1
h
(70°C)
h
read/write
read only
reserved
D[2]
D[2]
D[2]
0
h
.
Operation
Read/write
Operation*
Read only. Always returns
2A
Operation*
Read only.
read/write
read only
h
reserved
D[1]
D[1]
D[1]
1
November 2004
read/write
read only
reserved
D[0]
D[0]
D[0]
0