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MPLAB ? REAL ICE ? In-Circuit Emulator User’s Guide
The electrical specifications for logic probes are listed in Table 7-2.
TABLE 7-2:
Logic Inputs
LOGIC PROBE ELECTRICAL SPECIFICATIONS
V IH = V DD x 0.7V (min)
V IL = V DD x 0.3V (max)
Logic Outputs
V DD = 5V
V OH = 3.8V min
V DD = 3V
V OH = 2.4V min
V DD = 2.3V
V OH = 1.9V min
V DD = 1.65V
V OH = 1.2V min
V OL = 0.55V max V OL = 0.55V max V OL = 0.3V max
V OL = 0.45V max
7.6
STANDARD COMMUNICATION BOARD
For standard emulator communication with a target ( Section 2.4.1 “Standard
Communication” ), use the standard driver board.
The standard driver board is the main interface to the target processor. It contains the
connections to the high voltage (V PP ), V DD sense lines, and clock and data connections
required for programming and connecting with the target devices.
The V PP high-voltage lines can produce a variable voltage that can swing from 14V
down to 0 volts to satisfy the voltage requirements for the specific emulation processor.
The V DD sense connection draws very little current from the target processor. The
actual power comes from the MPLAB REAL ICE in-circuit emulation system as the V DD
sense line is used as a reference only to track the target voltage. The V DD connection
is isolated with an optical switch.
The clock and data connections are interfaces with the following characteristics.
? Clock and data signals are in high-impedance mode (even when no power is
applied to the MPLAB REAL ICE in-circuit emulator system)
? Clock and data signals are protected from high voltages caused by faulty targets
systems, or improper connections
? Clock and data signals are protected from high current caused from electrical
shorts in faulty target systems
Note:
When using the standard driver board, the rate for real-time streaming data
and tracing is limited to 20 MIPS.
FIGURE 7-2:
6-PIN STANDARD PINOUT
Standard Socket
Pin
1
Name
Vpp
Function
Power
1
2
4 6
3 5
Bottom of
Target Board
2
3
4
5
Vdd_TGT
GND
ICSPDAT
ICSPCLK
Power on target
Ground
Standard Com Data
Standard Com Clock
DS51616A-page 44
6
AUX
Auxiliary
? 2006 Microchip Technology Inc.
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