R40008 Atmel Corporation, R40008 Datasheet - Page 162
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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Instruction Cycle Timings
6.13
6-20
CP
status
ready
not ready
Coprocessor data operation
Cycle
1
1
2
•
b
Address
pc+8
pc+12
pc+8
pc+8
pc+8
pc+8
pc+12
A coprocessor data operation is a request from the core for the coprocessor to initiate
some action. The action does not have to be completed for some time, but the
coprocessor must commit to doing it before driving CPB LOW.
If the coprocessor is not capable of performing the requested task, it must leave CPA
and CPB HIGH. If it can do the task, but cannot commit right now, it must drive CPA
LOW but leave CPB HIGH until it can commit. The core busy-waits until CPB goes
LOW.
The cycle timings are listed in Table 6-16 where:
•
Coprocessor data operations are not available in Thumb state.
b represents the busy cycles.
Note
nRW
0
0
0
0
0
Copyright © 1994-2001. All rights reserved.
Table 6-16 Coprocessor data operation instruction cycle operations
MAS
[1:0]
2
2
2
2
2
Data
(pc+8)
(pc+8)
-
-
-
nMREQ
0
1
1
1
0
SEQ
0
0
0
0
0
nOPC
0
0
1
1
1
nCPI
0
0
0
0
0
ARM DDI 0029G
CPA
0
0
0
0
0
CPB
0
1
1
1
0
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