Microchip Technology MA330031-2 Data Sheet

Page of 530
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70000657H-page 382
 2011-2013 Microchip Technology Inc.
WDTPRE
Watchdog Timer Prescaler bit
1
 = 1:128
0
 = 1:32
WDTPOST<3:0>
Watchdog Timer Postscaler bits
1111
 = 1:32,768
1110
 = 1:16,384



0001
 = 1:2
0000
 = 1:1
WDTWIN<1:0>
Watchdog Window Select bits
11
 = WDT window is 25% of WDT period
10
 = WDT window is 37.5% of WDT period
01
 = WDT window is 50% of WDT period
00
 = WDT window is 75% of WDT period
ALTI2C1
Alternate I2C1 pin
1
 = I2C1 is mapped to the SDA1/SCL1 pins
0
 = I2C1 is mapped to the ASDA1/ASCL1 pins
ALTI2C2
Alternate I2C2 pin
1
 = I2C2 is mapped to the SDA2/SCL2 pins
0
 = I2C2 is mapped to the ASDA2/ASCL2 pins
JTAGEN
)
JTAG Enable bit 
1
 = JTAG is enabled
0
 = JTAG is disabled
ICS<1:0>
ICD Communication Channel Select bits
11
 = Communicate on PGEC1 and PGED1
10
 = Communicate on PGEC2 and PGED2
01
 = Communicate on PGEC3 and PGED3
00
 = Reserved, do not use
TABLE 27-2:
CONFIGURATION BITS DESCRIPTION (CONTINUED)
Bit Field
Description
Note 1:
This bit is only available on dsPIC33EPXXXMC20X/50X and PIC24EPXXXMC20X devices.
2:
When JTAGEN = 1, an internal pull-up resistor is enabled on the TMS pin. Erased devices default to 
JTAGEN = 1. Applications requiring I/O pins in a high-impedance state (tri-state) in Reset should use pins 
other than TMS for this purpose.