PIC18F2331 Datasheet, PDF (279/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
REGISTER 22-13: DEVICE ID REGISTER 1 FOR PIC18F2331/2431/4331/4431 DEVICES
R
R
R
R
R
R
R
DEV2
DEV1
DEV0
REV4
REV3
REV2
REV1
bit 7
R
REV0
bit 0
bit 7-5
bit 4-0
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
REV<4:0>: Revision ID bits
These bits are used to indicate the device revision.
Legend:
R = Read-only bit
P = Programmable bit
- n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
REGISTER 22-14:
DEVICE ID REGISTER 2 FOR PIC18F2331/2431/4331/4431 DEVICES
R
R
R
R
R
R
R
DEV10 DEV9
DEV8
DEV7
DEV6
DEV5
DEV4
bit 7
R
DEV3
bit 0
bit 7-0
DEV10:DEV3: Device ID bits
These bits are used with the DEV2:DEV0 bits in the Device ID Register 1 to identify the
part number
0000 0101 = PIC18F2331/2431/4331/4431 devices
Note 1: These values for DEV10:DEV3 may be shared with other devices. The specific
device is always identified by using the entire DEV10:DEV0 bit sequence.
Legend:
R = Read-only bit
P = Programmable bit
- n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 277