ICE4000 Microchip Technology, ICE4000 Datasheet - Page 62
![EMULATOR MPLAB-ICE 4000 POD](/photos/9/27/92749/ice4000_sml.jpg)
ICE4000
Manufacturer Part Number
ICE4000
Description
EMULATOR MPLAB-ICE 4000 POD
Manufacturer
Microchip Technology
Series
MPLAB® ICE 4000r
Type
Microcontrollerr
Datasheet
1.ICE4000.pdf
(98 pages)
Specifications of ICE4000
Contents
ICE4000 POD, Parallel and USB Cable, Power Supply, MPLAB IDE CD and Documentation
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
dsPIC30F & PIC18 Series
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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MPLAB
7.5
DS51490A-page 56
REAL-TIME READS
ICE 4000 User’s Guide
7.4.4
Reading the information in the trace memory window requires knowledge of device
architecture. PICmicro MCU instructions fetch one instruction cycle while decoding and
executing the previous cycle, (i.e., there is a one cycle pipeline).
In the example below:
1. At line 2, the W register (address = 0xfe8) is cleared.
2. The next cycle, the value gets written into the W register, i.e., the W register value
FIGURE 7-4:
This feature consists of a real-time read buffer that records the data of all processor file
register write operations. The address and data are obtained from the file register
address and data bus. The write operation to the real-time read buffer occurs after data
buffers have latched the information from the file register address and data bus.
The real-time display (either Watch, File Register or SFR window) gives a dynamic
display of data, which is being continuously captured in real time. The values displayed
are the values that are collected from the last read of the real-time read buffer. The time
interval between real-time reads is set up under the Debugger>Settings, View tab.
Note: A longer time interval than the default value will update the values at a
of 0xFF is changed to 0x00.
Reading the Trace Memory Window
much slower pace, making it easier to monitor values.
TRACE MEMORY WINDOW EXAMPLE, PIC18F452
1
2
2004 Microchip Technology Inc.
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