M42800A Atmel Corporation, M42800A Datasheet - Page 137

• Manufacturer Part Number: M42800A
• Manufacturer: Atmel Corporation

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

5.7
ARM DDI 0029G
Disabling EmbeddedICE
The EmbeddedICE Logic is disabled by setting DBGEN LOW.
Hard-wiring the DBGEN input LOW permanently disables the EmbeddedICE Logic.
However, you must not rely upon this for system security.
When DBGEN is LOW:
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•
•
•
BREAKPT and DBGRQ are forced LOW to the core
DBGACK is forced LOW from the ARM7TDMI core
interrupts pass through to the processor uninhibited by the debug logic
EmbeddedICE Logic is put into a low-power mode.
Caution
Copyright © 1994-2001. All rights reserved.
Debug Interface
5-15