Microchip Technology DM183021 データシート
2010 Microchip Technology Inc.
DS39616D-page 273
PIC18F2331/2431/4331/4431
REGISTER 23-13: DEVID1: DEVICE ID REGISTER 1 FOR PIC18F2331/2431/4331/4431 DEVICES
R
R
R
R
R
R
R
R
DEV2
DEV1
DEV0
REV4
REV3
REV2
REV1
REV0
bit 7
bit 0
Legend:
R = Readable bit
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
DEV<2:0>:
Device ID bits
These bits are used with the DEV<10:3> bits in the Device ID Register 2 to identify the part number.
000
= PIC18F4331
001
= PIC18F4431
100
= PIC18F2331
101
= PIC18F2431
bit 4-0
REV<4:0>:
Revision ID bits
These bits are used to indicate the device revision.
REGISTER 23-14: DEVID2: DEVICE ID REGISTER 2 FOR PIC18F2331/2431/4331/4431 DEVICES
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 = Readable bit
R = Readable bit
P = Programmable bit
U = Unimplemented bit, read as ‘0’
-n = Value when device is unprogrammed
U = Unchanged from programmed state
bit 7-0
DEV<10:3>:
Device ID bits
(1)
These bits are used with the DEV<2:0> bits in the Device ID Register 1 to identify the
part number
part number
0000 0101
= PIC18F2331/2431/4331/4431 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.
using the entire DEV<10:0> bit sequence.