MCP9805T-BESLASHST datasheet(16/34 Pages) MICROCHIP

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MCP9805

DS21977B-page 16

4.1.5

MANUFACTURER ID REGISTER

This register is used to identify the device manufacturer

in order to perform manufacturer-specific operations.

The manufacturer ID for the MCP9805 is 0x0054

(hexadecimal).

4.1.6

DEVICE ID AND REVISION

The upper byte of this register is used to specify the

device identification and the lower byte is used to

specify device revision. The device ID for the MCP9805

is 0x00 (hex).

The revision begins with 0x00 (hex) for the first release,

with the number being incremented as revised versions

are released.

MANUFACTURER ID REGISTER (READ-ONLY)

→ ADDRESS ‘0000 0110’b

Upper-Half:

R-0

Manufacturer ID

bit 15

bit 8

Lower-Half:

R-0

R-1

R-0

R-1

R-0

R-1

R-0

Manufacturer ID

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

- n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

DEVICE ID AND DEVICE REVISION (READ-ONLY)

→ ADDRESS ‘0000 0111’b

Upper-Half:

R-0

Device ID

bit 15

bit 8

Lower-Half:

R-0

Device Revision

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

- n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

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