Datasheet

PIC18F2458/2553/4458/4553
DS39887C-page 32 © 2009 Microchip Technology Inc.
REGISTER 3-1: DEVID1: DEVICE ID REGISTER 1 FOR PIC18F2458/2553/4458/4553 DEVICES
RRRRRRRR
DEV2 DEV1 DEV0 REV4 REV3 REV2 REV1 REV0
bit 7 bit 0
Legend:
R = Read-only bit P = Programmable bit U = Unimplemented bit, read as ‘0’
-n = Value when device is unprogrammed u = Unchanged from programmed state
bit 7-5 DEV2:DEV0: Device ID bits
See Register 3-2 for a complete listing.
bit 4-0 REV3:REV0: Revision ID bits
These bits are used to indicate the device revision.
REGISTER 3-2: DEVID2: DEVICE ID REGISTER 2 FOR PIC18F2458/2553/4458/4553 DEVICES
RRRRRRRR
DEV10 DEV9 DEV8 DEV7 DEV6 DEV5 DEV4 DEV3
bit 7 bit 0
Legend:
R = Read-only bit P = Programmable bit U = Unimplemented bit, read as ‘0’
-n = Value when device is unprogrammed u = Unchanged from programmed state
bit 7-0 DEV10:DEV3: Device ID bits
DEV10:DEV3
(DEVID2<7:0>)
DEV2:DEV0
(DEVID1<7:5>)
Device
0010 1010 011 PIC18F2458
0010 1010 010 PIC18F2553
0010 1010 001 PIC18F4458
0010 1010 000 PIC18F4553