R40008 Atmel Corporation, R40008 Datasheet - Page 24
R40008
Manufacturer Part Number
R40008
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.R40008.pdf
(19 pages)
4.R40008.pdf
(20 pages)
Specifications of R40008
Flash (kbytes)
0 Kbytes
Pin Count
100
Max. Operating Frequency
75 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
256
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
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
3
Input Capture Channels
3
32khz Rtc
No
Calibrated Rc Oscillator
No
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Introduction
1.1
1.1.1
1-2
About the ARM7TDMI core
The instruction pipeline
The ARM7TDMI core is a member of the ARM family of general-purpose 32-bit
microprocessors. The ARM family offers high performance for very low power
consumption, and small size.
The ARM architecture is based on Reduced Instruction Set Computer (RISC)
principles. The RISC instruction set, and related decode mechanism are much simpler
than those of Complex Instruction Set Computer (CISC) designs. This simplicity gives:
•
•
•
This section describes:
•
•
•
•
The ARM7TDMI core uses a pipeline to increase the speed of the flow of instructions
to the processor. This allows several operations to take place simultaneously, and the
processing and memory systems to operate continuously.
A three-stage pipeline is used, so instructions are executed in three stages:
•
•
•
The instruction pipeline is shown in Figure 1-1 on page 1-3.
a high instruction throughput
an excellent real-time interrupt response
a small, cost-effective, processor macrocell.
The instruction pipeline on page 1-2
Memory access on page 1-3
Memory interface on page 1-4.
EmbeddedICE Logic on page 1-4.
Fetch
Decode
Execute.
Copyright © 1994-2001. All rights reserved.
ARM DDI 0029G
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