AT91SAM9260B-CU-999 Atmel, AT91SAM9260B-CU-999 Datasheet - Page 194
AT91SAM9260B-CU-999
Manufacturer Part Number
AT91SAM9260B-CU-999
Description
IC MCU ARM9 217LFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM9260B-CU-999.pdf
(798 pages)
Specifications of AT91SAM9260B-CU-999
Core Processor
ARM9
Core Size
16/32-Bit
Speed
180MHz
Connectivity
EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
POR, WDT
Number Of I /o
96
Program Memory Size
32KB (32K x 8)
Program Memory Type
ROM
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
217-LFBGA
Processor Series
AT91SAMx
Core
ARM926EJ-S
Data Bus Width
32 bit
Data Ram Size
8 KB
Interface Type
2-Wire, EBI, I2S, SPI, USART
Maximum Clock Frequency
180 MHz
Number Of Programmable I/os
96
Number Of Timers
6
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
AT91SAM-ICE, AT91-ISP, AT91SAM9260-EK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 4 Channel
For Use With
AT91SAM9260-EK - KIT EVAL FOR AT91SAM9260AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
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Part Number
Manufacturer
Quantity
Price
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20.13 Asynchronous Page Mode
20.13.1
Figure 20-34. Page Mode Read Protocol (Address MSB and LSB are defined in
6221I–ATARM–17-Jul-09
Protocol and Timings in Page Mode
A[MSB]
D[31:0]
A[LSB]
MCK
NRD
NCS
The SMC supports asynchronous burst reads in page mode, providing that the page mode is
enabled in the SMC_MODE register (PMEN field). The page size must be configured in the
SMC_MODE register (PS field) to 4, 8, 16 or 32 bytes.
The page defines a set of consecutive bytes into memory. A 4-byte page (resp. 8-, 16-, 32-byte
page) is always aligned to 4-byte boundaries (resp. 8-, 16-, 32-byte boundaries) of memory. The
MSB of data address defines the address of the page in memory, the LSB of address define the
address of the data in the page as detailed in
With page mode memory devices, the first access to one page (t
quent accesses to the page (t
enables the user to define different read timings for the first access within one page, and next
accesses within the page.
Table 20-7.
Notes:
Figure 20-34
The NRD and NCS signals are held low during all read transfers, whatever the programmed val-
ues of the setup and hold timings in the User Interface may be. Moreover, the NRD and NCS
timings are identical. The pulse length of the first access to the page is defined with the
Page Size
4 bytes
8 bytes
16 bytes
32 bytes
1. A denotes the address bus of the memory device
2. For 16-bit devices, the bit 0 of address is ignored. For 32-bit devices, bits [1:0] are ignored.
NCS_RD_PULSE
shows the NRD and NCS timings in page mode access.
Page Address and Data Address within a Page
tpa
Page Address
A[25:2]
A[25:3]
A[25:4]
A[25:5]
sa
) as shown in
(1)
NRD_PULSE
tsa
Table
Figure
20-7.
Data Address in the Page
A[1:0]
A[2:0]
A[3:0]
A[4:0]
Table
20-34. When in page mode, the SMC
NRD_PULSE
20-7)
pa
tsa
) takes longer than the subse-
AT91SAM9260
(2)
194
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