MIC280_14 Datasheet, PDF (21/28 Pages) Micrel Semiconductor – Precision IttyBitty™ Thermal Supervisor

Micrel, Inc.
Remote Temperature Low Limit High-Byte Register (TLOW1h) 8-bits, Read/Write
MIC280
D[7]
read/write
D[6]
read/write
Remote Temperature Low Limit High-Byte Register
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
Low temperature limit for remote zone, most significant byte.
D[1]
read/write
D[0]
read/write
Bit
D[7:0]
Function
Low temperature limit for the remote zone, most significant byte.
Operation
Read/write
Power-up default value: 0000 0000_b = 00_h (0°C)
Read/write command byte: 0000 1000_b = 08_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.
Security Register (LOCK) 8-bits, Write once
D[7]
reserved
D[6]
reserved
Reserved
D[5]
reserved
Security Register
D[4]
read/write-
once
D[3]
read/write-
once
L4
L3
D[2]
read/write-
once
L2
D[1]
read/write-
once
L1
D[0]
read/write-
once
L0
Bit
D[7:5]
L4
L3
L2
L1
L0
Function
Reserved
Warm-reset lockout bit
Shutdown mode lockout bit^{(Error! Reference source not found.)}
Diode fault event lock bit
Remote overtemperature event lock bit
Local overtemperature event lock bit
Power-up default value: 0000 0000_b = 00_h (all event unlocked)
Write command byte: 0000 1001_b = 09_h
Operation
Always write as zero
1 = RST bit disabled; 0 = unlocked
1 = shutdown disabled; 0 = unlocked
1 = locked; 0 = unlocked
1 = locked; 0 = unlocked
1 = locked; 0 = unlocked
May 5, 2014
21
Revision 2.0