M42800A Atmel Corporation, M42800A Datasheet - Page 126
M42800A
Manufacturer Part Number
M42800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M42800A.pdf
(224 pages)
4.M42800A.pdf
(27 pages)
Specifications of M42800A
Flash (kbytes)
0 Kbytes
Pin Count
144
Max. Operating Frequency
33 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
54
Ext Interrupts
54
Usb Speed
No
Usb Interface
No
Spi
2
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Self Program Memory
NO
External Bus Interface
1
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.3/5.0
Fpu
No
Mpu / Mmu
no / no
Timers
6
Output Compare Channels
6
Input Capture Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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Debug Interface
5.2
5.2.1
5.2.2
5-4
Debug systems
Debug host
Protocol converter
A debug system typically has three parts:
•
•
•
The debug host and the protocol converter are system-dependent.
The debug host is a computer that is running a software debugger such as the ARM
Debugger for Windows (ADW). The debug host allows you to issue high-level
commands such as setting breakpoints or examining the contents of memory.
The protocol converter communicates with the high-level commands issued by the
debug host and the low-level commands of the ARM7TDMI processor JTAG interface.
Typically it interfaces to the host through an interface such as an enhanced parallel port.
Figure 5-1 shows a typical debug system using an ARM core.
Debug host
Debug host on page 5-4
Protocol converter on page 5-4
Debug target on page 5-5.
Copyright © 1994-2001. All rights reserved.
converter
Protocol
Host computer running
ARM or third party
toolkit
Debug target
For example Multi-ICE
Figure 5-1 Typical debug system
Development system
containing an
ARM7TDMI processor
ARM DDI 0029G
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