PIC18F2420/2520/4420/4520
REGISTER 23-12: DEVID1: DEVICE ID REGISTER 1 FOR PIC18F2420/2520/4420/4520
R
R
R
R
R
R
R
R
DEV2
DEV1
DEV0
REV4
REV3
REV2
REV1
REV0
bit 7
bit 0
Legend:
R = Readable bit
P = Programmable bit
U = Unimplemented bit, read as ‘0’
-n = Value when device is unprogrammed
u = Unchanged from programmed state
bit 7-5
bit 4-0
DEV<2:0>: Device ID bits
110= PIC18F4420
100= PIC18F4520
010= PIC18F2420
000= PIC18F2520
REV<4:0>: Revision ID bits
These bits are used to indicate the device revision.
REGISTER 23-13: DEVID2: DEVICE ID REGISTER 2 FOR PIC18F2420/2520/4420/4520
R
R
R
R
R
R
R
R
DEV10(1)
DEV9(1)
DEV8(1)
DEV7(1)
DEV6(1)
DEV5(1)
DEV4(1)
DEV3(1)
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
DEV<10:3>: Device ID bits(1)
These bits are used with the DEV<2:0> bits in Device ID Register 1 to identify the part number.
0001 0001= PIC18F2420/2520 devices
0001 0000= PIC18F4420/4520 devices
Note 1: These values for DEV<10:3> may be shared with other devices. The specific device is always identified by
using the entire DEV<10:0> bit sequence.
© 2008 Microchip Technology Inc.
DS39631E-page 257
MICROCHIP [ MICROCHIP ]
