PIC18F2331 MICROCHIP [Microchip Technology], PIC18F2331 Datasheet - Page 270

• Manufacturer Part Number: PIC18F2331
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2331/2431/4331/4431
TABLE 22-1:
REGISTER 22-1:
DS39616B-page 268
300000h CONFIG1L
300001h CONFIG1H
300002h CONFIG2L
300003h CONFIG2H
300004h CONFIG3L
300005h CONFIG3H
300006h CONFIG4L
300007h CONFIG4H
300008h CONFIG5L
300009h CONFIG5H
30000Ah CONFIG6L
30000Bh CONFIG6H
30000Ch CONFIG7L
30000Dh CONFIG7H
3FFFFEh DEVID1
3FFFFFh DEVID2
Legend:
Note 1:
File Name
x = unknown, u = unchanged, – = unimplemented, q = value depends on condition.
Shaded cells are unimplemented, read as ‘0’.
See Register 22-13 for DEVID1 values. DEVID registers are read-only and cannot be programmed by the user.
bit 7
bit 6
bit 5-4
bit 3-0
(1)
(1)
CONFIGURATION BITS AND DEVICE IDS
MCLRE
DEBUG
CONFIG1H: CONFIGURATION REGISTER 1 HIGH (BYTE ADDRESS 300001h)
DEV10
WRTD
DEV2
IESO
IESO: Internal External Switch Over bit
1 = Internal External Switch Over mode enabled
0 = Internal External Switch Over mode disabled
FCMEN: Fail-Safe Clock Monitor Enable bit
1 = Fail-Safe Clock Monitor enabled
0 = Fail-Safe Clock Monitor disabled
Unimplemented: Read as ‘0’
F
11xx= External RC oscillator, CLKO function on RA6
1001= Internal oscillator block, CLKO function on RA6, and port function on RA7
1000= Internal oscillator block, port function on RA6, and port function on RA7
0111= External RC oscillator, port function on RA6
0110= HS oscillator, PLL enabled (clock frequency = 4 x F
0101= EC oscillator, port function on RA6
0100= EC oscillator, CLKO function on RA6
0010= HS oscillator
0001= XT oscillator
0000= LP oscillator
Legend:
R = Readable bit
- n = Value when device is unprogrammed
bit 7
Bit 7
CPD
—
—
—
—
—
—
—
—
—
OSC
R/P-1
IESO
<3:0>: Oscillator Selection bits
FCMEN
EBTRB
WRTB
DEV1
DEV9
Bit 6
CPB
—
—
—
—
—
—
—
—
—
—
FCMEN
R/P-1
T1OSCMX
WINEN
WRTC
DEV0
DEV8
Bit 5
—
—
—
—
—
—
—
—
—
—
—
P = Programmable bit
U-0
Preliminary
—
EXCLKMX PWM4MX
WDPS3
HPOL
REV4
DEV7
Bit 4
—
—
—
—
—
—
—
—
—
—
—
U-0
—
WDPS2
FOSC3
BORV1
EBTR3
WRT3
LPOL
REV3
DEV6
Bit 3
CP3
—
—
—
—
—
—
F
PWMPIN
R/P-1
WDPS1
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
SSPMX
FOSC2
BORV0
EBTR2
OSC
WRT2
REV2
DEV5
Bit 2
CP2
LVP
—
—
—
—
—
3
BOREN
WDPS0
OSC
FOSC1
EBTR1
WRT1
REV1
DEV4
F
R/P-1
Bit 1
CP1
OSC
—
—
—
—
—
—
—
—
 2003 Microchip Technology Inc.
1)
2
PWRTEN
STVREN
FLTAMX
WDTEN
FOSC0
EBTR0
WRT0
REV0
DEV3
Bit 0
CP0
F
—
—
—
—
—
—
R/P-1
OSC
1
Unprogrammed
---- ----
11-- 1111
---- 1111
---1 1111
--11 11--
1--1 1-11
1--- -1-1
---- ----
---- 1111
11-- ----
---- 1111
111- ----
---- 1111
-1-- ----
xxxx xxxx
0000 0101
Default/
Value
F
R/P-1
OSC
bit 0
0
(1)