Actel Silicon Explorer II, User Manual, Page: 10 / 42

Chapter 1: Connecting Silicon Explorer II
4
Current
Consumption
Silicon Explorer II is a CMOS device and exhibits very low current
consumption when idle. Current consumption rises rapidly to several
hundred milliamps during acquisition. If your power supply is unable
to supply the necessary current, SE II or your target may reset.
Table 1-2 is a guide to typical current consumption based on an
acquisition rate at 5V — current will be proportionately higher at 3V.
Connector Types
Silicon Explorer II has a 22-pin (18 channels, a clock, VIO, GND, and
clock GND) and a 16-pin connector for controlling the ActionProbe
circuitry and reading the design checksum. Silicon Explorer II Lite has
only the 16-pin and 26-pin connector (the large 26-pin connector is not
used). Table 1-3 is a summary of the connector pins and their
functions.
Logic Analysis
Note: This section does not apply to Silicon Explorer II Lite.
Table 1-2. Typical Current Consumption
Acquisition Rate Current@5V
IDLE 75ma
10 MHz 300ma
20 MHz 400ma
50 MHz 500ma
100 MHz 700ma
Table 1-3. Connector Types
Connector Type Mode
22-pin Logic Analysis
16-pin ActionProbe Control