R40008 Atmel Corporation, R40008 Datasheet - Page 179
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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7.4
ARM DDI 0029G
Bidirectional data write cycle
Figure 7-3 shows the ARM7TDMI processor bidirectional data write cycle timing. The
timing parameters used in Figure 7-3 are listed in Table 7-3.
In Figure 7-3 DBE is HIGH and nENIN is LOW during the cycle shown.
nENOUT
D[31:0]
MCLK
Note
Copyright © 1994-2001. All rights reserved.
T
nen
Symbol
T
T
T
T
doh
dout
nen
nenh
Table 7-3 Bidirectional data write cycle timing parameters
T
dout
Parameter
DOUT[31:0] hold from MCLKf
MCLKf to D[31:0] valid
MCLKf to nENOUT valid
nENOUT hold time from MCLKf
Figure 7-3 Bidirectional data write cycle timing
T
T
nenh
doh
AC and DC Parameters
Parameter type
Minimum
Minimum
Maximum
Maximum
7-7
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