PIC18F2331_07 Datasheet, PDF (272/400 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
TABLE 22-1: 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 —
—
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: x = unknown, u = unchanged, - = unimplemented. Shaded cells are unimplemented, read as ‘0’.
Note 1: Unimplemented in PIC18F2331/2431 devices; maintain this bit set.
2: See Register 22-13 for DEVID1 values. DEVID registers are read-only and cannot be programmed by the user.
REGISTER 22-1: 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
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 FOSC1)
0101 = EC oscillator, port function on RA6
0100 = EC oscillator, CLKO function on RA6
0010 = HS oscillator
0001 = XT oscillator
0000 = LP oscillator
DS39616C-page 270
Preliminary
© 2007 Microchip Technology Inc.