
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
RR
R
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
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
RR
R
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