Datasheet

PIC18F47J13 FAMILY
DS39974A-page 420 Preliminary  2010 Microchip Technology Inc.
REGISTER 27-5: CONFIG3L: CONFIGURATION REGISTER 3 LOW (BYTE ADDRESS 300004h)
R/WO-1 R/WO-1 R/WO-1 R/WO-1 R/WO-1 R/WO-1 R/WO-1 R/WO-1
DSWDTPS3
(1)
DSWDTPS2
(1)
DSWDTPS1
(1)
DSWDTPS0
(1)
DSWDTEN
(1)
DSBOREN RTCOSC DSWDTOSC
(1)
bit 7 bit 0
Legend:
R = Readable bit WO = Write-Once bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 7-4 DSWDTPS<3:0>: Deep Sleep Watchdog Timer Postscale Select bits
(1)
The DSWDT prescaler is 32. This creates an approximate base time unit of 1 ms.
1111 = 1:2,147,483,648 (25.7 days)
1110 = 1:536,870,912 (6.4 days)
1101 = 1:134,217,728 (38.5 hours)
1100 = 1:33,554,432 (9.6 hours)
1011 = 1:8,388,608 (2.4 hours)
1010 = 1:2,097,152 (36 minutes)
1001 = 1:524,288 (9 minutes)
1000 = 1:131,072 (135 seconds)
0111 = 1:32,768 (34 seconds)
0110 = 1:8,192 (8.5 seconds)
0101 = 1:2,048 (2.1 seconds)
0100 = 1:512 (528 ms)
0011 = 1:128 (132 ms)
0010 = 1:32 (33 ms)
0001 = 1:8 (8.3 ms)
0000 = 1:2 (2.1 ms)
bit 3 DSWDTEN: Deep Sleep Watchdog Timer Enable bit
(1)
1 = DSWDT is enabled
0 = DSWDT is disabled
bit 2 DSBOREN: “F” Device Deep Sleep BOR Enable bit, “LF” Device V
DD BOR Enable bit
For “F” Devices:
1 = VDD sensing BOR is enabled in Deep Sleep
0 = V
DD sensing BOR circuit is always disabled
For “LF” Devices:
1 = VDD sensing BOR circuit is always enabled
0 = V
DD sensing BOR circuit is always disabled
bit 1 RTCOSC: RTCC Reference Clock Select bit
1 = RTCC uses T1OSC/T1CKI as the reference clock
0 = RTCC uses INTRC as the reference clock
bit 0 DSWDTOSC: DSWDT Reference Clock Select bit
(1)
1 = DSWDT uses INTRC as the reference clock
0 = DSWDT uses T1OSC/T1CKI as the reference clock
Note 1: Functions are not available on “LF” devices.