64GA106 datasheet(249/330 Pages) MICROCHIP

249 / 330 page

 2010 Microchip Technology Inc.

DS39905E-page 249

PIC24FJ256GA110 FAMILY

bit 1-0

POSCMD<1:0>:

Primary Oscillator Configuration bits

= Primary Oscillator disabled

= HS Oscillator mode selected

= XT Oscillator mode selected

= EC Oscillator mode selected

CW2: FLASH CONFIGURATION WORD 2 (CONTINUED)

Note 1:

Implemented in 100-pin devices only; otherwise unimplemented, read as ‘1’.

CW3: FLASH CONFIGURATION WORD 3

R/PO-1

—

bit 23

bit 16

R/PO-1

WPEND

WPCFG

WPDIS

—

bit 15

bit 8

R/PO-1

WPFP7

WPFP6

WPFP5

WPFP4

WPFP3

WPFP2

WPFP1

WPFP0

bit 7

bit 0

Legend:

R = Readable bit

PO = Program Once bit

U = Unimplemented bit, read as ‘0’

-n = Value when device is unprogrammed

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 23-16

Reserved

bit 15

WPEND:

Segment Write Protection End Page Select bit

= Protected code segment upper boundary is at the last page of program memory; lower boundary

is the code page specified by WPFP<7:0>

= Protected code segment lower boundary is at the bottom of program memory (000000h); upper

boundary is the code page specified by WPFP<7:0>

bit 14

WPCFG:

Configuration Word Code Page Protection Select bit

= Last page (at the top of program memory) and Flash Configuration Words are not protected if

WPEND = 0

= Last page and Flash Configuration Words are code-protected if WPEND = 0

bit 13

WPDIS:

Segment Write Protection Disable bit

= Segmented code protection disabled

= Segmented code protection enabled; protected segment defined by WPEND, WPCFG and

WPFPx Configuration bits

bit 12-8

Reserved

bit 7-0

WPFP<7:0>:

Protected Code Segment Boundary Page bits

Designates the 512-word program code page that is the boundary of the protected code segment,

starting with Page 0 at the bottom of program memory.

If WPEND = 1:

First address of designated code page is the lower boundary of the segment.

If WPEND = 0:

Last address of designated code page is the upper boundary of the segment.

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