AC244036 datasheet(50/78 Pages) MICROCHIP

50 / 78 page

Optional Debug Headers

DS51292T-page 50

 2006-2012 Microchip Technology Inc.

AC244026, AC244027

Header Identification

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.

Header Setup and Operation - AC244026

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).

Header

ICE/ICD Device

Board Assembly Number

AC244026

PIC16F727-ICE

02-02105

AC244027

PIC16LF727-ICE

Jumper

Setting

Function

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.

Open

Disable power LED indicator. This option saves power.

Short

Enable power LED indicator.

Jumper

Setting

Function

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.)

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