AT91SAM9261SB-CU-999 Atmel, AT91SAM9261SB-CU-999 Datasheet - Page 75

• Manufacturer Part Number: AT91SAM9261SB-CU-999
• Description: IC MCU ARM9 ULTRA LP 217LFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

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

13.3
6242E–ATARM–11-Sep09
Device Initialization
Initialization follows the steps described below:
Table 13-1
Table 13-1.
3.0
4.433619
6.0
1. Stack setup for ARM supervisor mode
2. Main Oscillator Frequency Detection
3. C variable initialization
4. PLL setup: PLLB is initialized to generate a 48 MHz clock necessary to use the USB
5. Initialization of the DBGU serial port (115200 bauds, 8, N, 1)
6. Enable the user reset
7. Jump to SerialFlash Boot sequence through NPCS0. If SerialFlash Boot succeeds, per-
8. Jump to DataFlash Boot sequence through NPCS0. If DataFlash Boot succeeds, per-
9. Jump to NAND Flash Boot sequence. If NAND Flash Boot succeeds, perform a remap
10. Jump to SD Card Boot sequence. If SD Card Boot succeeds, perform a remap and
11. Jump to EEPROM Boot sequence. If EEPROM Boot succeeds, perform a remap and
12. Activation of the Instruction Cache
13. Jump to SAM-BA Boot sequence
14. Disable the WatchDog
15. Initialization of the USB Device Port
7.3728
11.05920
14.7456
Device. A register located in the Power Management Controller (PMC) determines the
frequency of the main oscillator and thus the correct factor for the PLLB.
form a remap and jump to 0x0.
form a remap and jump to 0x0.
and jump to 0x0.
jump to 0x0.
jump to 0x0.
defines the crystals supported by the Boot Program.
Crystals Supported by Software Auto-Detection (MHz)
3.2768
6.144
7.864320
12.0
16.0
4.608
3.6864
4.9152
6.4
8.0
12.288
17.734470
3.84
5.0
6.5536
9.8304
13.56
18.432
AT91SAM9261S
4.0
5.24288
7.159090
10.0
14.31818
20.0
75