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参数资料
| 型号： | DVA12XP080 |
| 厂商： | Microchip Technology |
| 文件页数： | 3/18页 |
| 文件大小： | 0K |
| 描述： | ADAPTER DEVICE FOR MPLAB-ICE |
| 标准包装： | 1 |
| 模块/板类型： | * |
| 适用于相关产品： | ICE2000 |
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Processor Module and Device Adapter Specification
4.1.1
EMULATOR PROCESSOR POWER
4.1.4
OPERATING VOLTAGE OF 2.0 TO 4.6
SUPPLIED BY EMULATOR SYSTEM
If the emulator system is selected to power the emula-
tor processor in the processor module, the emulator
system can be operated without being connected to a
target application. If the system is being connected to a
target application, the power to the pod should be
applied before applying power to the target application.
The target application system’s V CC will experience a
small current load (10 mA typical) when the emulator
VOLTS
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:
system is connected via a device adapter. This is
because the target system must always power the
clock chip in the processor module.
1.
2.
Apply power to the PC host.
Apply power to the emulator pod and processor
module assembly.
4.1.2
EMULATOR PROCESSOR POWER
3.
Invoke MPLAB IDE.
SUPPLIED BY TARGET APPLICATION
SYSTEM
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
4.
5.
6.
7.
4.2
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 Frequency
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.
The processor modules will support the maximum
emulation. The maximum 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.
4.1.3
OPERATING VOLTAGE OF 4.6 TO 5.5
VOLTS
4.3
Clock Options
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).
MPLAB ICE 2000 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.
The recommended power-up sequence is:
4.3.1
CLOCK SOURCE FROM EMULATOR
1.
2.
3.
4.
5.
6.
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.
Refer to the MPLAB ICE 2000 on-line help file in
MPLAB IDE ( Help>Topics ) or the “ MPLAB ? ICE 2000
In-Circuit Emulator User’s Guide” (DS51488), “Using
the On-Board Clock”, for configuring MPLAB IDE to
supply the clock source.
? 2006 Microchip Technology Inc.
DS51140M-page 3
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