PIC18F47J53 Datasheet, PDF (449/586 Pages) Microchip Technology – 28/44-Pin, High-Performance USB Microcontrollers with nanoWatt XLP Technology

PIC18F47J53 FAMILY
REGISTER 28-8: CONFIG4H: CONFIGURATION REGISTER 4 HIGH (BYTE ADDRESS 300007h)
U-1
—
bit 7
U-1
U-1
U-1
R/WO-1
U-0
R/WO-1
R/WO-1
—
—
—
LS48MHZ
—
WPEND
WPDIS
bit 0
Legend:
R = Readable bit
-n = Value at POR
WO = Write-Once bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-4
bit 3
bit 2
bit 1
bit 0
Unimplemented: Program the corresponding Flash Configuration bit to ‘1’
LS48MHZ: Low-Speed USB Clock Selection
1 = 48-MHz system clock is expected; divide-by-8 generates low-speed USB clock
0 = 24-MHz system clock is expected; divide-by-4 generates low-speed USB clock
Unimplemented: Read as ‘0’
WPEND: Write-Protect Disable bit
1 = Flash pages, WPFP<6:0> to (Configuration Words page), are write/erase protected
0 = Flash pages 0 to WPFP<6:0> are write/erase-protected
WPDIS: Write-Protect Disable bit
1 = WPFP<5:0>, WPEND and WPCFG bits are ignored; all Flash memory may be erased or written
0 = WPFP<5:0>, WPEND and WPCFG bits enabled; erase/write-protect is active for the selected
region(s)
REGISTER 28-9: DEVID1: DEVICE ID REGISTER 1 FOR PIC18F47J53 FAMILY DEVICES
(BYTE ADDRESS 3FFFFEh)
R
DEV2
bit 7
R
DEV1
R
DEV0
R
REV4
R
REV3
R
REV2
R
REV1
R
REV0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-5
bit 4-0
DEV<2:0>: Device ID bits
These bits are used with DEV<10:3> bits in Device ID Register 2 to identify the part number. See
Register 28-10.
REV<4:0>: Revision ID bits
These bits are used to indicate the device revision.
 2010 Microchip Technology Inc.
Preliminary
DS39964B-page 449