M42800A Atmel Corporation, M42800A Datasheet - Page 119

• 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

4.6
ARM DDI 0029G
If you are not using an external coprocessor
If you are implementing a system that does not include any external coprocessors, you
must tie both CPA and CPB HIGH. This indicates that no external coprocessors are
present in the system. If any coprocessor instructions are received, they take the
undefined instruction trap so that they can be emulated in software if required. The
internal coprocessor, CP14, can still be used.
The coprocessor outputs from the ARM7TDMI processor are usually left unconnected
but these outputs can be used in other parts of a system as follows:.
•
•
•
nCPI
nOPC
TBIT.
Copyright © 1994-2001. All rights reserved.
Coprocessor Interface
4-15