User manual

Hardware Specification

7.5.3 Indicator Lights (LEDs)

The indicator lights have the following significance.

7.5.4 Logic Probe/External Trigger Interface

Probes can be connected to the 14-pin header on the side of the unit for processing

external signals that are used for triggering external equipment. This header contains

8 input/output connections that are user selectable as inputs or outputs with logic levels

that are proportional to the target operating voltage. The outputs can be used for

triggering an external logic analyzer or oscilloscope to allow the developer capture

events of interest based on trigger criteria set within MPLAB IDE.

The inputs are part of a trigger bus.

FIGURE 7-1: LOGIC PROBE PINOUT

Logic probes may be attached to this connector to give the functionality described in

Table 7-1. The probes are color coded for easy identification.

LED Color Description

Active Blue Lit when power is first applied or when target is connected.

Status Green Lit when the emulator is operating normally – standby.

Red Lit when an operation has failed.

Orange Lit when the emulator is busy.

TABLE 7-1: LOGIC PROBE PINOUT DESCRIPTION

Pin I/O Name Function Color

DD*

VDD reference Red

2 O NC No connection Gray

3 O NC No connection Gray

4 I TCLK External synchronous clock Gray

5 I/O EXT7** External input/output bit 7 White

6 I/O EXT6 External input/output bit 6 White

7 I/O EXT5 External input/output bit 5 White

8 I/O EXT4 External input/output bit 4 White

9 I/O EXT3 External input/output bit 3 White

10 I/O EXT2 External input/output bit 2 White

11 I/O EXT1 External input/output bit 1 White

12 I/O EXT0** External input/output bit 0 White

13 Gnd GND System Ground Black

14 Gnd GND System Ground Black

*Do not connect V

DD to the target.

* *Do not connect EXT0 to EXT7. This is dedicated to self test.

Logic Probe Pinout on Emulator