R40008 Atmel Corporation, R40008 Datasheet - Page 80
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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Memory Interface
3.3.6
3-10
Summary of ARM memory cycle timing
A summary of ARM7TDMI processor memory cycle timing is shown in Figure 3-7.
nMREQ
D[31:0]
A[31:0]
MCLK
nRAS
nCAS
SEQ
Copyright © 1994-2001. All rights reserved.
N-cycle
a
Figure 3-6 Coprocessor register transfer cycles
nMREQ
A[31:0]
D[31:0]
MCLK
SEQ
a+4
S-cycle
Memory
Figure 3-7 Memory cycle timing
a+8
N-cycle
I-cycle
Memory Coprocessor
C-cycle
C-cycle
ARM DDI 0029G
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