2015-2016 Microchip Technology Inc. DS20005382C-page 37
MCP9902/3/4
REGISTER 5-28: PROD_ID – PRODUCT ID REGISTER (ADDRESS FDH)
R-0 R-1 R-1 R-0 R-0 R-0 R-0 R-0
— — — — — EXT2_APD_EN — EXT2_EN
bit 7 bit 0
Legend:
RC = Read-then-clear bit W = Writable bit U = Unimplemented bit, read as 0
-n = Value at POR ‘1’ = bit is set ‘0’ = Bit is cleared x = Bit in unknown
7 Hardwired as '0'
6-5 Hardwired as ‘1’
4-3 Hardwired as '0'
2 EXT2_APD_EN: Enables Channel 3 Anti-parallel diode
1 = APD2 is enabled for MCP9904
0 = APD2 is disabled for MCP9902 and MCP9903
1 Hardwired as ‘0’
0 EXT2_EN: Enable External Diode 2
1 = External Diode 2 channel active for MCP9903 and MCP9904
0 = External Diode 2 channel inactive for MCP9902
REGISTER 5-29: MCHP_ID – MANUFACTURER ID REGISTER (ADDRESS FEH)
R-0 R-1 R-0 R-1 R-1 R-1 R-0 R-1
MCHP_ID<7:0>
bit 7 bit 0
Legend:
RC = Read-then-clear bit W = Writable bit U = Unimplemented bit, read as 0
-n = Value at POR ‘1’ = bit is set ‘0’ = Bit is cleared x = Bit in unknown
7-0 MCHP_ID<7:0>: Unique manufacturer ID for Microchip
REGISTER 5-30: REVISION – REVISION REGISTER (ADDRESS FFH)
R-0 R-0 R-0 R-1 R-0 R-0 R-0 R-0
REVISION<7:0>
bit 7 bit 0
Legend:
RC = Read-then-clear bit W = Writable bit U = Unimplemented bit, read as 0
-n = Value at POR ‘1’ = bit is set ‘0’ = Bit is cleared x = Bit in unknown
7-0 REVISION<7:0>: DIE revision number
