M42800A Atmel Corporation, M42800A Datasheet - Page 258
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 in Depth
B.12
B-40
The watchpoint registers
The two watchpoint units, known as Watchpoint 0 and Watchpoint 1, each contain three
pairs of registers:
•
•
•
Each register is independently programmable and has a unique address. The function
and mapping of the resisters is shown in Table B-5.
address value and address mask
data value and data mask
control value and control mask.
Copyright © 1994-2001. All rights reserved.
Table B-5 Function and mapping of EmbeddedICE registers
Address
00000
00001
00100
00101
01000
01001
01010
01011
01100
01101
10000
10001
10010
10011
10100
10101
Width
3
5
6
32
32
32
32
32
9
8
32
32
32
32
9
8
Debug control
Debug comms data register
Watchpoint 0 address value
Watchpoint 0 address mask
Watchpoint 0 data value
Watchpoint 0 data mask
Watchpoint 1 address value
Watchpoint 1 address mask
Watchpoint 1 data value
Watchpoint 1 data mask
Function
Debug status
Debug comms control register
Watchpoint 0 control value
Watchpoint 0 control mask
Watchpoint 1 control value
Watchpoint 1 control mask
ARM DDI 0029G
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