Datasheet

© 2010 Microchip Technology Inc. DS61156D-page 155
PIC32MX5XX/6XX/7XX
28.0 SPECIAL FEATURES
PIC32MX5XX/6XX/7XX devices include several
features intended to maximize application flexibility and
reliability and minimize cost through elimination of
external components. These are:
• Flexible device configuration
• Watchdog Timer (WDT)
• JTAG (Joint Test Action Group) interface
• In-Circuit Serial Programming™ (ICSP™)
28.1 Configuration Bits
The Configuration bits can be programmed to select
various device configurations.
Note: This data sheet summarizes the features of
the PIC32MX5XX/6XX/7XX family family of
devices. It is not intended to be a compre-
hensive reference source. To complement
the information in this data sheet, refer to
the related section in the
“PIC32MX Family
Reference Manual”
(DS61132), which is
available from the Microchip web site
(www.microchip.com/PIC32).
REGISTER 28-1: DEVCFG0: DEVICE CONFIGURATION WORD 0
r-0 r-1 r-1 R/P r-1 r-1 r-1 R/P
— — —CP— — —BWP
bit 31 bit 24
r-1 r-1 r-1 r-1 R/P R/P R/P R/P
— — — —PWP<7:4>
bit 23 bit 16
R/P R/P R/P R/P r-1 r-1 r-1 r-1
PWP<3:0>
— — — —
bit 15 bit 8
r-1 r-1 r-1 r-1 R/P r-1 R/P R/P
— — — — ICESEL — DEBUG<1:0>
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit P = Programmable bit r = Reserved bit
U = Unimplemented bit -n = Bit Value at POR: (‘0’, ‘1’, x = Unknown)
bit 31
Reserved: Write ‘0’
bit 30-29
Reserved: Write ‘1’
bit 28
CP: Code-Protect bit
Prevents boot and program Flash memory from being read or modified by an external
programming device.
1 = Protection is disabled
0 = Protection is enabled
bit 27-25
Reserved: Write ‘1’
bit 24
BWP: Boot Flash Write-Protect bit
Prevents boot Flash memory from being modified during code execution.
1 = Boot Flash is writable
0 = Boot Flash is not writable
bit 23-20
Reserved: Write ‘1’