SAM7XC512 Atmel Corporation, SAM7XC512 Datasheet - Page 129
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SAM7XC512
Manufacturer Part Number
SAM7XC512
Description
Manufacturer
Atmel Corporation
Specifications of SAM7XC512
Flash (kbytes)
512 Kbytes
Pin Count
100
Max. Operating Frequency
55 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
62
Ext Interrupts
62
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
3
Can
1
Ssc
1
Ethernet
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Dac Resolution (bits)
No
Temp. Sensor
No
Crypto Engine
AES/DES
Sram (kbytes)
128
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.3
Operating Voltage (vcc)
3.0 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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ARM DDI 0029G
Entry into debug state on breakpoint
The ARM7TDMI core marks instructions as being breakpointed as they enter the
instruction pipeline, but the core does not enter debug state until the instruction reaches
the Execute stage.
Breakpointed instructions are not executed. Instead, the processor enters debug state.
When you examine the internal state, you see the state before the breakpointed
instruction. When your examination is complete, remove the breakpoint. This is usually
handled automatically by the debugger which also restarts program execution from the
previously-breakpointed instruction.
When a breakpointed conditional instruction reaches the Execute stage of the pipeline,
the breakpoint is always taken.
The processor enters debug state regardless of whether the condition is met.
A breakpointed instruction does not cause the ARM7TDMI core to enter debug state
when:
•
BREAKPT
A branch or a write to the PC precedes the breakpointed instruction. In this case,
when the branch is executed, the core flushes the instruction pipeline and so
cancels the breakpoint.
DBGACK
Note
nMREQ
D[31:0]
A[31:0]
MCLK
SEQ
Copyright © 1994-2001. All rights reserved.
Memory cycles
Figure 5-3 Debug state entry
Internal cycles
Debug Interface
5-7
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