AT91SAM9260B-CU-999 Atmel, AT91SAM9260B-CU-999 Datasheet - Page 35

• Manufacturer Part Number: AT91SAM9260B-CU-999
• Description: IC MCU ARM9 217LFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

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

10.4.7
6221I–ATARM–17-Jul-09
ARM9EJ-S Registers
Mode changes may be made under software control, or may be brought about by external inter-
rupts or exception processing. Most application programs execute in User Mode. The non-user
modes, known as privileged modes, are entered in order to service interrupts or exceptions or to
access protected resources.
The ARM9EJ-S core has a total of 37 registers.
Table 10-1
Table 10-1.
• Supervisor mode is a protected mode for the operating system
• Abort mode is entered after a data or instruction prefetch abort
• System mode is a privileged user mode for the operating system
• Undefined mode is entered when an undefined instruction exception occurs
• 31 general-purpose 32-bit registers
• 6 32-bit status registers
User and
System
CPSR
Mode
R10
R11
R12
R13
R14
PC
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
shows all the registers in all modes.
ARM9TDMI
SPSR_SVC
Supervisor
R13_SVC
R14_SVC
CPSR
Mode
R10
R11
R12
PC
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
™
Modes and Registers Layout
SPSR_ABORT
R13_ABORT
R14_ABORT
Abort Mode
CPSR
R10
R11
R12
PC
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
SPSR_UNDEF
R13_UNDEF
R14_UNDEF
Undefined
CPSR
Mode
R10
R11
R12
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
PC
SPSR_IRQ
AT91SAM9260
Interrupt
R13_IRQ
R14_IRQ
Mode-specific banked
CPSR
Mode
R10
R11
R12
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
PC
registers
SPSR_FIQ
Interrupt
R10_FIQ
R11_FIQ
R12_FIQ
R13_FIQ
R14_FIQ
R8_FIQ
R9_FIQ
CPSR
Mode
Fast
PC
R0
R1
R2
R3
R4
R5
R6
R7
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