Information
PIC18F46J11
DS80000435K-page 10 2009-2013 Microchip Technology Inc.
The corrected data sheet definition for Register 26-7:
2. Module: Low-Power Modes
The last paragraph in Section 4.6.3 “Deep
Sleep Wake-up Sources” should read as
follows:
“The software can determine the wake event
source by reading the DSWAKEH and
DSWAKEL registers. When the application
firmware is done using the DSWAKEH and
DSWAKEL Status registers, the firmware must
manually clear the registers prior to entering
Deep Sleep again, in order to ensure that the
correct wake-up source is indicated upon
resuming operation.”
REGISTER 26-7: CONFIG4L: CONFIGURATION REGISTER 4 LOW (BYTE ADDRESS 300006h)
R/WO-1 R/WO-1 R/WO-1 R/WO-1 R/WO-1 R/WO-1 R/WO-1 R/WO-1
WPCFG WPEND WPFP5
(2)
WPFP4
(3)
WPFP3 WPFP2 WPFP1 WPFP0
bit 7 bit 0
Legend:
R = Readable bit WO = Write-Once bit U = Unimplemented bit, read as ‘0’
-n = Value at Reset ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 7 WPCFG: Write/Erase Protect Configuration Region Select bit
1 = Configuration Words page is not erase/write-protected, unless WPEND and WPFP<5:0> settings
protect the Configuration Words page
(1)
0 = Configuration Words page is erase/write-protected, regardless of WPEND and WPFP<5:0>
(1)
bit 6 WPEND: Write/Erase Protect Region Select bit
1 = Flash pages WPFP<5:0> through Configuration Words page are erase/write-protected
0 = Flash pages 0 through WPFP<5:0> are erase/write-protected
bit 5-0 WPFP<5:0>: Write/Erase Protect Page Start/End Location bits
Used with WPEND bit to define which pages in Flash will be erase/write-protected.
Note 1: The “Configuration Words page” contains the FCWs and is the last page of implemented Flash memory on
a given device. Each page consists of 1,024 bytes. For example, on a device with 64 Kbytes of Flash, the
first page is 0 and the last page (Configuration Words page) is 63 (3Fh).
2: This bit must be written with ‘0’ on the 32K and 16K Flash devices for proper write-protect
operation.
3: This bit must be written with ‘0’ on the 16K Flash devices for proper write-protect operation.