M55800A Atmel Corporation, M55800A Datasheet - Page 26
M55800A
Manufacturer Part Number
M55800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M55800A.pdf
(29 pages)
4.M55800A.pdf
(256 pages)
5.M55800A.pdf
(28 pages)
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
- M40800 PDF datasheet
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- M55800A PDF datasheet #3
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Introduction
1.1.3
1.1.4
1-4
Memory interface
EmbeddedICE Logic
The ARM7TDMI processor memory interface has been designed to allow performance
potential to be realized, while minimizing the use of memory. Speed-critical control
signals are pipelined to allow system control functions to be implemented in standard
low-power logic. These control signals facilitate the exploitation of the fast-burst access
modes supported by many on-chip and off-chip memory technologies.
The ARM7TDMI core has four basic types of memory cycle:
•
•
•
•
EmbeddedICE Logic is the additional hardware provided by debuggable ARM
processors to aid debugging. It allows software tools to debug code running on a target
processor. The EmbeddedICE Logic is controlled through the Joint Test Action Group
(JTAG) test access port, using the EmbeddedICE interface. See Chapter 5 Debug
Interface and Appendix B Debug in Depth for more information.
idle cycle
nonsequential cycle
sequential cycle
coprocessor register transfer cycle.
Copyright © 1994-2001. All rights reserved.
ARM DDI 0029G
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