M42800A Atmel Corporation, M42800A Datasheet - Page 22

• 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

Figure 8. Memory Connections for Eight External Devices
Note:
22
For eight external devices, the maximum address space per device is 1M byte.
AT91X40 Series
EBI
NCS0 - NCS3
CS4 - CS7
D0 - D15
A0 - A19
NWRx
NRD
8 or 16
NCS0
NCS1
NCS2
D0 - D15 or D0 - D7
Memory Enable
Output Enable
Write Enable
A0 - A19
NCS3
Memory Enable
CS4
Memory Enable
CS5
Memory Enable
CS6
Memory Enable
CS7
Memory Enable
Memory Enable
Memory Enable
1354D–ATARM–08/02