R40008 Atmel Corporation, R40008 Datasheet - Page 264
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R40008
Manufacturer Part Number
R40008
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.R40008.pdf
(19 pages)
4.R40008.pdf
(20 pages)
Specifications of R40008
Flash (kbytes)
0 Kbytes
Pin Count
100
Max. Operating Frequency
75 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
256
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
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
3
Input Capture Channels
3
32khz Rtc
No
Calibrated Rc Oscillator
No
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Debug in Depth
B.13.2 Software breakpoints
B-46
To make a watchpoint unit cause software breakpoints on instruction fetches of a
particular bit pattern:
1.
2.
3.
4.
5.
6.
7.
You do not have to program the address value register.
Setting the breakpoint
To set the software breakpoint:
1.
2.
Clearing the breakpoint
To clear the software breakpoint, restore the instruction to the address.
Program its address mask register to
address is disregarded.
Program the data value register with the particular bit pattern that has been chosen
to represent a software breakpoint.
If you are programming a Thumb software breakpoint, repeat the 16-bit pattern
in both halves of the data value register. For example, if the bit pattern is
program
compares only the valid half of the data bus against the contents of the data value
register. In this way, you can use a single watchpoint register to catch software
breakpoints on both the upper and lower halves of the data bus.
Program the data mask register to
Program the control value register with nOPC = 0.
Program the control mask register with nOPC = 0 and all other bits to 1.
If you wish to make the distinction between User and non-User mode instruction
fetches, program the nTRANS bit in the control value and control mask registers
accordingly.
If required, program the EXTERN, RANGE, and CHAIN bits in the same way.
Read the instruction at the desired address and store it away.
Write the special bit pattern representing a software breakpoint at the address.
Note
Copyright © 1994-2001. All rights reserved.
. When a 16-bit instruction is fetched, EmbeddedICE
.
, all bits set to 1, so that the
ARM DDI 0029G
,
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