DAF18-2 Microchip Technology, DAF18-2 Datasheet - Page 3

• Manufacturer Part Number: DAF18-2
• Description: DEVICE ADAPTER FOR ICE4000
• Manufacturer: Microchip Technology

Specifications of DAF18-2

• Accessory Type: Adapter
• Processor To Be Evaluated: PIC18Fxxx
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ICE4000
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.1.2
When the MPLAB IDE software is brought up, the
emulator system is first initialized with the emulator
system powering the emulator processor. The
“Processor Power Supplied by Target Board” option
may then be selected using the Power tab of the
Settings dialog (Debugger>Settings) to power the
processor module from the target board.
When operating from external power, the processor
module will typically represent a current load equivalent
to the device being emulated (according to its data
sheet) plus approximately 100 mA. Keep in mind that
the target application will affect the overall current load
of the processor module, dependent upon the load
placed upon the processor I/O.
When the processor power is supplied by the target
application system, an external clock (from the target
board) may also be provided. MPLAB IDE will not allow
use of an external clock without the use of external
power.
4.1.3
If the target application system’s operating voltage is
between 4.55V (±120 mV) and 5.5V, the processor
module will consider this a STANDARD VOLTAGE
condition. In this mode, the processor can run to its
highest rated speed (as indicated in its data sheet).
The recommended power-up sequence is:
1.
2.
3.
4.
5.
6.
© 2005 Microchip Technology Inc.
Apply power to the PC host.
Apply power to the emulator pod and processor
module assembly.
Invoke MPLAB IDE.
Select Debugger > Settings and click the Power
tab. Configure system for “Processor Power
Supplied by Target Board”.
At the error message, apply power to the target
application circuit. Then acknowledge the error.
Issue a System Reset (from the debugger
menu) before proceeding.
Processor Module and Device Adapter Specification
EMULATOR PROCESSOR POWER
SUPPLIED BY TARGET APPLICATION
SYSTEM
OPERATING VOLTAGE OF 4.6 TO 5.5
VOLTS
Preliminary
4.1.4
If the target application system’s operating voltage is
between 2.0V and 4.55V (±120 mV), the processor
module will consider this a LOW VOLTAGE condition.
In this mode, the processor is limited to its rated speed
at a given voltage level (as indicated in its data sheet).
To minimize the amount of reverse current that the
target system is exposed to, the recommended
power-up sequence is:
1.
2.
3.
4.
5.
6.
7.
4.2
The processor modules will support the maximum
frequency of the device under emulation. The maxi-
mum frequency of a PICmicro MCU device is
significantly lower when the operating voltage is less
than 4.5V.
The processor modules will support a minimum
frequency of 32 kHz. When operating at low
frequencies, response to the screen may be slow.
4.3
MPLAB ICE 4000 allows internal and external clocking.
When set to internal, the clock is supplied from the
internal programmable clock, located in the emulator
pod. When set to external, the oscillator on the target
application system will be utilized.
4.3.1
Refer to the MPLAB ICE 4000 on-line help file in
MPLAB IDE (Help>Topics) or the MPLAB
User’s Guide (DS51490), “Using the On-Board Clock”,
for configuring MPLAB IDE to supply the clock source.
Apply power to the PC host.
Apply power to the emulator pod and processor
module assembly.
Invoke MPLAB IDE.
Select Debugger > Settings and click the Power
tab. Configure system for “Processor Power
Supplied by Target Board”.
At the error message, apply power to the target
application circuit. Then acknowledge the error.
Issue a System Reset (from the debugger
menu) before proceeding.
Select Debugger > Settings and click the Power
tab. Verify that the dialog says “Low Voltage
Enabled.” Click Cancel to close the dialog.
OPERATING VOLTAGE OF 2.0 TO 4.6
VOLTS
Operating Frequency
Clock Options
CLOCK SOURCE FROM EMULATOR
DS51298E-page 3
®
ICE 4000