SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 56

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 6
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 312
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Programmer’s Model
2.7.3
2-14
The relationship between ARM state and Thumb state registers
The Thumb state registers relate to the ARM state registers in the following way:
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•
•
•
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These relationships are shown in Figure 2-5.
Registers r0–r7 are known as the low registers. Registers r8–r15 are known as the high
registers.
Thumb state r0–r7 and ARM state r0–r7 are identical.
Thumb state CPSR and SPSRs and ARM state CPSR and SPSRs are identical.
Thumb state SP maps onto ARM state r13.
Thumb state LR maps onto ARM state r14.
The Thumb state PC maps onto the ARM state PC (r15).
Program counter (PC)
Note
Copyright © 2000 ARM Limited. All rights reserved.
Stack pointer (SP)
Link register (LR)
Thumb state
Figure 2-5 Mapping of Thumb state registers onto ARM state registers
CPSR
SPSR
r0
r2
r3
r4
r5
r6
r7
r1
Program counter (r15)
Stack pointer (r13)
Link register (r14)
ARM state
CPSR
SPSR
r10
r12
r11
r0
r2
r3
r4
r5
r6
r7
r8
r9
r1
ARM DDI 0165B