Rainbow Electronics LM95221 - Manual (Page 13)

2.0 LM95221 Registers
(Continued)
2.3 LOCAL and REMOTE MSB and LSB TEMPERATURE REGISTERS
Local Temperature MSB
(Read Only Address 10h) 9-bit plus sign format:
BIT D7 D6 D5 D4 D3 D2 D1 D0
Value SIGN 64 32 16 8 4 2 1
Temperature Data: LSb = 1˚C.
Local Temperature LSB
(Read Only Address 20h) 9-bit plus sign format:
BIT D7 D6 D5 D4 D3 D2 D1 D0
Value 0.5 0.25 0 0 0 0 0 0
Temperature Data: LSb = 0.25˚C.
Remote Temperature MSB
(Read Only Address 11h, 12h) 10 bit plus sign format:
BIT D7 D6 D5 D4 D3 D2 D1 D0
Value SIGN 64 32 16 8 4 2 1
Temperature Data: LSb = 1˚C.
(Read Only Address 11h, 12h) 11-bit unsigned format:
BIT D7 D6 D5 D4 D3 D2 D1 D0
Value 128 64 32 16 8 4 2 1
Temperature Data: LSb = 1˚C.
Remote Temperature LSB
(Read Only Address 21, 22h) 10-bit plus sign or 11-bit unsigned binary
formats:
BIT D7 D6 D5 D4 D3 D2 D1 D0
Value 0.5 0.25 0.125 0 0 0 0 0
Temperature Data: LSb = 0.125˚C.
For data synchronization purposes, the MSB register should be read first if the user wants to read both MSB and LSB registers.
The LSB will be locked after the MSB is read. The LSB will be unlocked after being read. If the user reads MSBs consecutively,
each time the MSB is read, the LSB associated with that temperature will be locked in and override the previous LSB value
locked-in.
2.4 MANUFACTURERS ID REGISTER
(Read Address FEh) The default value is 01h.
2.5 DIE REVISION CODE REGISTER
(Read Address FFh) Value to be determined. This register will increment by 1 every time there is a revision to the die by National
Semiconductor.
LM95221
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