R40008 Atmel Corporation, R40008 Datasheet - Page 23
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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Data Bus Width
1354D–ATARM–08/02
A data bus width of 8 or 16 bits can be selected for each chip select. This option is con-
trolled by the DBW field in the EBI_CSR (Chip Select Register) for the corresponding
chip select.
Figure 9 shows how to connect a 512K x 8-bit memory on NCS2.
Figure 9. Memory Connection for an 8-bit Data Bus
Figure 10 shows how to connect a 512K x 16-bit memory on NCS2.
Figure 10. Memory Connection for a 16-bit Data Bus
EBI
EBI
D8 - D15
A1 - A19
D0 - D7
D8 - D15
A1 - A18
D0 - D7
NCS2
NWE
NWR1
NWR0
NUB
NOE
NLB
NCS2
NRD
A0
D0 - D7
D8 - D15
A0 - A18
Low Byte Enable
High Byte Enable
Write Enable
Output Enable
Memory Enable
AT91X40 Series
D0 - D7
A1 - A18
A0
Write Enable
Output Enable
Memory Enable
23
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