Isolator Unit Design

The isolator is a bridge where electrically hot signals are passed through transparently to the emulator. The In-Circuit Serial Programming (ICSP) interface signals are magnetically or optically isolated, providing up to 2.5 kV equivalent isolation protection. The isolator is housed in its enclosure, providing an additional measure of safety.

This unit contains the same circuitry as the high-speed receiver board. See the Performance Pak for the MPLAB® REAL ICE™ In-Circuit Emulator User’s Guide (DS50002528), as well as the isolation circuitry (see the following schematics).

Figure 1: Isolator Unit Schematic – ICSPDAT
Figure 2: Isolator Unit Schematic – ICSPCLK
Figure 3: Isolator Unit Schematic – DAT and CLK
Figure 4: Isolator Unit Schematic – Power
Figure 5: Isolator Unit Schematic – Vdd, Vpp, not MCLR
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