R40008 Atmel Corporation, R40008 Datasheet - Page 186
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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AC and DC Parameters
7.11
7-14
Coprocessor timing
Figure 7-10 shows the ARM7TDMI processor coprocessor timing. The timing
parameters used in Figure 7-10 are listed in Table 7-10.
In Figure 7-10, usually nMREQ and SEQ become valid T
MCLK. In this cycle the core has been busy-waiting for a coprocessor to complete the
instruction. If CPA and CPB change during phase 1, the timing of nMREQ and SEQ
depends on T
2, and so the timing of nMREQ and SEQ is always T
nMREQ
MCLK
nCPI
SEQ
CPA
CPB
Note
Copyright © 1994-2001. All rights reserved.
cpms
. Most systems can generate CPA and CPB during the previous phase
Symbol
T
T
T
T
T
cph
cpi
cpih
cpms
cps
Phase 1
T
cpi
Parameter
CPA,CPB hold time from MCLKr
MCLKf to nCPI valid
nCPI hold time from MCLKf
CPA, CPB to nMREQ, SEQ
CPA, CPB setup to MCLKr
T
cpms
T
cps
Table 7-10 Coprocessor timing parameters
T
cph
Phase 2
Figure 7-10 Coprocessor timing
msd
.
T
msd
cpih
after the falling edge of
Parameter type
Minimum
Maximum
Minimum
Maximum
Minimum
ARM DDI 0029G
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