Microchip Technology MA240029 데이터 시트
PIC24FJ128GA310 FAMILY
DS39996F-page 338
2010-2011 Microchip Technology Inc.
REGISTER 29-3:
CW3: FLASH CONFIGURATION WORD 3
U-1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
—
—
—
—
—
—
—
—
bit 23
bit 16
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
r-1
R/PO-1
WPEND
WPCFG
WPDIS
BOREN
WDTWIN1
WDTWIN0
r
SOSCSEL
bit 15
bit 8
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
VBTBOR
WPFP6
(3)
WPFP5
WPFP4
WPFP3
WPFP2
WPFP1
WPFP0
bit 7
bit 0
Legend:
PO = Program Once bit
r = Reserved bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 23-16
Unimplemented:
Read as ‘1’
bit 15
WPEND:
Segment Write Protection End Page Select bit
1
= Protected code segment upper boundary is at the last page of program memory; the lower
boundary is the code page specified by WPFP<6:0>
0
= Protected code segment lower boundary is at the bottom of the program memory (000000h); upper
boundary is the code page specified by WPFP<6:0>
bit 14
WPCFG:
Configuration Word Code Page Write Protection Select bit
1
= Last page (at the top of program memory) and Flash Configuration Words are not write-protected
(
)
0
= Last page and Flash Configuration Words are write-protected provided WPDIS = ‘0’
bit 13
WPDIS:
Segment Write Protection Disable bit
1
= Segmented code protection is disabled
0
= Segmented code protection is enabled; protected segment is defined by the WPEND, WPCFG and
WPFPx Configuration bits
bit 12
BOREN:
Brown-out Reset Enable bit
1
= BOR is enabled (all modes except Deep Sleep)
0
= BOR is disabled
bit 11-10
WDTWIN<1:0>:
Watchdog Timer Window Width Select bits
11
= 25%
10
= 37.5%
01
= 50%
00
= 75%
bit 9
Reserved:
Always maintain as ‘1’
bit 8
SOSCSEL:
SOSC Selection bit
1
= SOSC circuit is selected
0
= Digital (SCLKI) mode
(
)
bit 7
VBTBOR:
V
BAT
BOR Enable bit
1
= V
BAT
BOR is enabled
0
= V
BAT
BOR is disabled
Note 1:
Regardless of WPCFG status, if WPEND = 1 or if WPFP corresponds to the Configuration Word page, the
Configuration Word page is protected.
Configuration Word page is protected.
2:
Ensure that the SCLKI pin is made a digital input while using this configuration (see
).
3:
For the 62K devices: PIC24FJ64GA310, PIC24FJ64GA308 and PIC24FJ64GA306, bit 6 should be
maintained as ‘0’.
maintained as ‘0’.