Microchip Technology AC244045 Data Sheet

 2006-2012 Microchip Technology Inc.

DS51292U-page 57

The header AC number is used for ordering the header. However, this number is not 
on the debug header, as the board is often used for multiple headers by inserting 
different ICE/ICD devices. To identify this debug header, use the following information.

This Processor Extension Pak provides extra debugging capability not available on 
PIC16F727 production devices:

• 3 Address / Data breakpoints (1 Address only breakpoint on production devices)

• Data capture (Real Time Data Streaming)

• No user Flash resources needed for debugging

• No user RAM resources needed for debugging

• No user pins required

This header has jumpers available for MCLR pull-up and power LED control.

Additionally, this header has jumpers related to the LDO voltage regulator. Depending 
on the device pin used for this function, you would use either J4 (RA0), J5 (RA5) or J6 
(RA6) for Vcap selection. For details on the voltage regulator, see the 
PIC16F72X/PIC16LF72X Data Sheet (DS41341).

AC244026

PIC16F727-ICE

02-02105

AC244027

PIC16LF727-ICE

J2

Open

Disable weak ICE MCLR pull-up resistor.

Short

Enable weak ICE MCLR pull-up resistor. This option 
keeps the target program running even after the tool has 
been disconnected from the header, i.e., the pin will not 
float high.

J3

Open

Disable power LED indicator. This option saves power.

Short

Enable power LED indicator.

J4, J5, or J6

Open

Use only target capacitance for Vcap. This is the standard 
configuration.

Short

Use both on-board and target capacitance for Vcap. This 
option is to provide extra margin for the voltage regulator 
stability/regulation in cases where there is a long lead 
length between the emulation header Vcap pin and the 
target Vcap pin. (As examples, when using long-pin DIP 
transition sockets or certain QFN transition sockets.)