PIC18F2331_10 Datasheet, PDF (264/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PIC18F2331/2431/4331/4431
TABLE 23-1: CONFIGURATION BITS AND DEVICE IDs
File Name
Bit 7 Bit 6 Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Default/
Unprogrammed
Value
300000h CONFIG1L
—
—
—
—
—
—
—
—
---- ----
300001h CONFIG1H IESO FCMEN —
—
FOSC3 FOSC2 FOSC1 FOSC0 11-- 1111
300002h CONFIG2L
—
—
—
—
BORV1 BORV0 BOREN PWRTEN ---- 1111
300003h CONFIG2H —
—
WINEN WDTPS3 WDTPS2 WDTPS1 WDTPS0 WDTEN --11 1111
300004h CONFIG3L
—
— T1OSCMX HPOL
LPOL PWMPIN —
—
--11 11--
300005h CONFIG3H MCLRE⁽¹⁾ —
—
EXCLKMX⁽¹⁾ PWM4MX⁽¹⁾ SSPMX⁽¹⁾ — FLTAMX⁽¹⁾ 1--1 11-1
300006h CONFIG4L DEBUG —
—
—
—
LVP
— STVREN 1--- -1-1
300007h CONFIG4H —
—
—
300008h CONFIG5L
—
—
—
—
—
—
—
—
---- ----
—
CP3⁽¹⁾
CP2⁽¹⁾
CP1
CP0
---- 1111
300009h CONFIG5H CPD
CPB
—
30000Ah CONFIG6L
—
—
—
—
—
—
—
—
11-- ----
—
WRT3⁽¹⁾ WRT2⁽¹⁾ WRT1 WRT0 ---- 1111
30000Bh CONFIG6H WRTD WRTB
30000Ch CONFIG7L
—
—
WRTC
—
—
—
—
—
—
111- ----
—
EBTR3⁽¹⁾ EBTR2⁽¹⁾ EBTR1 EBTR0 ---- 1111
30000Dh CONFIG7H
3FFFFEh DEVID1⁽²⁾
3FFFFFh DEVID2⁽²⁾
—
DEV2
DEV10
EBTRB
DEV1
DEV9
—
DEV0
DEV8
—
REV4
DEV7
—
REV3
DEV6
—
REV2
DEV5
—
REV1
DEV4
—
REV0
DEV3
-1-- ----
xxxx xxxx⁽²⁾
0000 0101
Legend:
Note 1:
2:
x = unknown, u = unchanged, - = unimplemented. Shaded cells are unimplemented, read as ‘0’.
Unimplemented in PIC18F2331/4331 devices; maintain this bit set.
See Register 23-13 for DEVID1 values. DEVID registers are read-only and cannot be programmed by the user.
REGISTER 23-1: CONFIG1H: CONFIGURATION REGISTER 1 HIGH (BYTE ADDRESS 300001h)
R/P-1
R/P-1
U-0
IESO
FCMEN
—
bit 7
U-0
R/P-1
R/P-1
R/P-1
R/P-1
—
FOSC3
FOSC2
FOSC1
FOSC0
bit 0
Legend:
R = Readable bit
P = Programmable bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
U = Unchanged from programmed state
bit 7
bit 6
bit 5-4
bit 3-0
IESO: Internal External Switchover bit
1 = Internal External Switchover mode enabled
0 = Internal External Switchover 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’
FOSC<3:0>: Oscillator Selection bits
11xx = External RC oscillator, CLKO function on RA6
1001 = Internal oscillator block, CLKO function on RA6 and port function on RA7 (INTIO1)
1000 = Internal oscillator block, port function on RA6 and port function on RA7 (INTIO2)
0111 = External RC oscillator, port function on RA6
0110 = HS oscillator, PLL enabled (clock frequency = 4 x FOSC1)
0101 = EC oscillator, port function on RA6 (ECIO)
0100 = EC oscillator, CLKO function on RA6 (EC)
0010 = HS oscillator
0001 = XT oscillator
0000 = LP oscillator
DS39616D-page 264
 2010 Microchip Technology Inc.