MIC280_14 Datasheet, PDF (24/28 Pages) Micrel Semiconductor – Precision IttyBitty™ Thermal Supervisor

Micrel, Inc.
Local Overtemperature Limit Register (CRIT0) 8-bits, Read/Write
MIC280
D[7]
read/write
D[6]
read/write
Local Overtemperature Limit Register
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
Overtemperature limit for local zone.
D[1]
read/write
D[0]
read/write
Bit
D[7:0]
Function
Overtemperature limit for the local zone.
Operation
Read/write
Power-up default value: 0100 0110_b = 46_h (70°C)
Read/write command byte: 0010 0000_b = 20_h
Each LSB represents one degree centigrade. The values are in a two’s complement binary format such that 0°C is
reported as 0000 0000b. See Temperature Data Format for more details.
Any writes to a temperature limit register will result in the corresponding fault queue being purged and reset.
Manufacturer ID Register (MFG_ID) 8-bits, Read only
D[7]
read-only
0
D[6]
read-only
0
D[5]
read-only
1
Manufacturer ID Register
D[4]
read-only
D[3]
read-only
0
1
D[2]
read-only
0
D[1]
read-only
1
D[0]
read-only
0
Bit
D[7:0]
Function
Identifies Micrel, Inc. as the manufacturer of the device
Power-up default value: 0010 1010_b = 2A_h
Read command byte: 1111 1110_b = FE_h
Die Revision Register (DIE_REV) 8-bits, Read only
Operation
Read only. Always returns 2Ah
D[7]
read-only
D[6]
read-only
D[5]
read-only
Die Revision Register
D[4]
read-only
D[3]
read-only
MIC280 die revision number
D[2]
read-only
D[1]
read-only
D[0]
read-only
Bit
D[7:0]
Function
Identifies the device revision number.
Power-up default value: [device revision number]_h
Read command byte: 1111 1111_b = FF_h
Operation
Read only
May 5, 2014
24
Revision 2.0