AT91SAM9261SB-CU-999 Atmel, AT91SAM9261SB-CU-999 Datasheet - Page 669
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
AT91SAM9261SB-CU-999
Manufacturer Part Number
AT91SAM9261SB-CU-999
Description
IC MCU ARM9 ULTRA LP 217LFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM9261SB-CU-999.pdf
(709 pages)
Specifications of AT91SAM9261SB-CU-999
Core Processor
ARM9
Core Size
16/32-Bit
Speed
190MHz
Connectivity
EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
DMA, LCD, POR, PWM, WDT
Number Of I /o
96
Program Memory Size
32KB (32K x 8)
Program Memory Type
ROM
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.08 V ~ 1.32 V
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
16 KB
Interface Type
2-Wire, I2S, SPI, USB
Maximum Clock Frequency
190 MHz
Number Of Programmable I/os
96
Number Of Timers
4
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, AT91SAM9261-EK
Minimum Operating Temperature
- 40 C
For Use With
AT91SAM9261-EK - KIT EVAL FOR AT91SAM926EJ-SAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
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Part Number
Manufacturer
Quantity
Price
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42.2.3
42.2.3.1
42.2.3.2
42.2.3.3
42.2.3.4
42.2.4
42.2.4.1
42.2.5
42.2.5.1
6242E–ATARM–11-Sep09
Boot ROM
Bus Matrix
LCD
Boot ROM: NAND Flash Boot is Not Functional
Boot ROM: Watchdog Disable
Boot ROM: Temperature Range
Boot ROM: UDP Pad Pull-up Enable
Bus Matrix: Problem with Locked Transfers
LCD: Screen Shifting After a Reset
NAND Flash Boot is not functional in this revision
None.
When AT91SAM9261S boots on internal ROM (BMS =1) the watchdog timer is disabled by soft-
ware. Because the watchdog mode register is a “write once”, the system, designed to boot on an
SPI DataFlash, cannot reuse the watchdog functionality.
If the watchdog feature is mandatory for the application, the system must boot on external mem-
ory connected on CS0 (BMS = 0).
The temperature range for the Boot ROM use is 0°C / 70°C.
Starting up the device outside this temperature range can lead to unpredictable behavior. If the
AT91SAM9261S-based system may have to start up at temperatures below 0⋅ C and above
70⋅ C, it is recommended to boot out of an external memory connected on NCS0.
None.
When AT91SAM9261S boots on internal ROM (BMS =1), the UDP Pad Pull-up is enabled by
software. This can lead to enumeration error.
Disable UDP Pad Pull-up at the beginning of the boot program (ex: at91bootstrap).
Locked transfers are not correctly handled by the Bus Matrix and can lead to a system freeze
up. This does not concern ARM locked transfers.
Avoid other Bus Matrix masters locked transfers.
When a FIFO underflow occurs, a reset of the LCD DMA and FIFO pointers is necessary.
If only LCD DMA pointers are reset (FIFO pointers not reset), the displayed image is shifted.
Apply the following sequence to correctly reset LCD DMA and FIFO pointers:
• LCD power off
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
AT91SAM9261S
669
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