Datasheet

© 2009 Microchip Technology Inc. DS39775C-page 357
PIC18F87J50 FAMILY
REGISTER 25-7: DEVID1: DEVICE ID REGISTER 1 FOR PIC18F87J50 FAMILY DEVICES
RRRRRRRR
DEV2 DEV1 DEV0 REV4 REV3 REV2 REV1 REV0
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
bit 7-5 DEV2:DEV0: Device ID bits
(1)
111 = PIC18F86J50
110 = reserved
101 = PIC18F85J50
100 = PIC18F67J50
011 = PIC18F66J55
010 = PIC18F66J50
001 = PIC18F87J50
000 = PIC18F65J50 and PIC18F86J55
bit 4-0 REV4:REV0: Revision ID bits
These bits are used to indicate the device revision.
Note 1: Where values for DEV2:DEV0 are shared by more than one device number, the specific device is always
identified by using the entire DEV10:DEV0 bit sequence. These bits are used with the DEV[10:3] bits in
the Device ID Register 2 to identify the part number.
REGISTER 25-8: DEVID2: DEVICE ID REGISTER 2 FOR PIC18F87J50 FAMILY DEVICES
RRRRRRRR
DEV10 DEV9 DEV8 DEV7 DEV6 DEV5 DEV4 DEV3
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
bit 7-0 DEV10:DEV3: Device ID bits
(1)
These bits are used with the DEV2:DEV0 bits in the Device ID Register 1 to identify the part number.
0100 0001 = PIC18F65J50/66J50/66J55/67J50/85J50/86J50
0100 0010 = PIC18F87J50/86J55
Note 1: The values for DEV10:DEV3 may be shared with other device families. The specific device is always
identified by using the entire DEV10:DEV0 bit sequence.