Microchip Technology MA180025 Data Sheet

PIC18F87J90 FAMILY

DS39933D-page 326

 2010 Microchip Technology Inc.

TABLE 25-2:

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

(1)

300000h CONFIG1L DEBUG

XINST

STVREN

—

WDTEN

111- ---1

300001h CONFIG1H

—

(2)

—

(2)

—

(2)

—

(2)

—

(3)

CP0

—

---- 01--

300002h CONFIG2L

IESO

FCMEN

—

LPT1OSC

T1DIG

FOSC2

FOSC1

FOSC0

11-1 1111

300003h CONFIG2H

—

(2)

—

(2)

—

(2)

—

(2)

WDTPS3 WDTPS2 WDTPS1 WDTPS0

---- 1111

300004h CONFIG3L

—

(2)

—

(2)

—

(2)

—

(2)

—

RTCOSC

—

---- --1-

300005h CONFIG3H

—

(2)

—

(2)

—

(2)

—

(2)

—

CCP2MX

---- ---1

3FFFFEh DEVID1

DEV2

DEV1

DEV0

REV4

REV3

REV2

REV1

REV0

xxxx xxxx

(4)

3FFFFFh DEVID2

DEV10

DEV9

DEV8

DEV7

DEV6

DEV5

DEV4

DEV3

0000 10x1

(4)

Legend:

= unknown, - = unimplemented. Shaded cells are unimplemented, read as ‘0’.

Note 1:

Values reflect the unprogrammed state as received from the factory and following Power-on Resets. In all other Reset
states, the configuration bytes maintain their previously programmed states.

The value of these bits in program memory should always be ‘1’. This ensures that the location is executed as a NOP if it
is accidentally executed.

This bit should always be maintained as ‘0’.

See Register 25-7 and Register 25-8 for DEVID values. These registers are read-only and cannot be programmed by
the user.