M55800A Atmel Corporation, M55800A Datasheet - Page 17

• Manufacturer Part Number: M55800A
• Manufacturer: Atmel Corporation

Specifications of M55800A

• Flash (kbytes): 0 Kbytes
• Pin Count: 176
• Max. Operating Frequency: 33 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 58
• Ext Interrupts: 58
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 3
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 72
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• 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

1745FS–ATARM–18-Apr-06
configure up to eight 16-Mbyte banks. In all cases it supports byte, half-word and word aligned
accesses.
For each of these banks, the user can program:
The External Bus Interface features also the Early Read Protocol, configurable for all the
devices, that significantly reduces access time requirements on an external device.
• Number of wait states
• Number of data float times (wait time after the access is finished to prevent any bus
• Data bus width (8-bit or 16-bit)
• With a 16-bit wide data bus, the user can program the EBI to control one 16-bit device
contention in case the device is too long in releasing the bus)
(Byte Access Select Mode) or two 8-bit devices in parallel that emulate a 16-bit memory
(Byte-write Access mode).
AT91M55800A Summary
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