SAM9RL64 Atmel Corporation, SAM9RL64 Datasheet - Page 149

• Manufacturer Part Number: SAM9RL64
• Manufacturer: Atmel Corporation

Specifications of SAM9RL64

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 240 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 118
• Ext Interrupts: 118
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 2
• Uart: 5
• Ssc: 2
• Sd / Emmc: 1
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 10
• Adc Speed (ksps): 220
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• 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): 1.08 to 1.32
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

6.5
ARM DDI 0029G
Data operations
A data operation executes in a single datapath cycle unless a shift is determined by the
contents of a register. A register is read onto the A bus, and a second register or the
immediate field onto the B bus (see Figure 1-3 on page 1-8). The ALU combines the A
bus source and the shifted B bus source according to the operation specified in the
instruction, and the result, when required, is written to the destination register.
Compare and test operations do not produce results. Only the ALU status flags are
affected.
An instruction prefetch occurs at the same time as the data operation, and the program
counter is incremented.
When the shift length is specified by a register, an additional datapath cycle occurs
during this cycle. The data operation occurs on the next cycle which is an internal cycle
that does not access memory. This internal cycle can be merged with the following
sequential access by the memory manager as the address remains stable through both
cycles.
The PC can be one or more of the register operands. When it is the destination, external
bus activity can be affected. If the result is written to the PC, the contents of the
instruction pipeline are invalidated, and the address for the next instruction prefetch is
taken from the ALU rather than the address incrementer. The instruction pipeline is
refilled before any further execution takes place, and during this time exceptions are
ignored.
PSR transfer operations (MSR and MRS) exhibit the same timing characteristics as the
data operations except that the PC is never used as a source or destination register.
The cycle timings are listed in Table 6-4 on page 6-8 where:
•
•
•
pc is the address of the branch instruction
alu is the destination address calculated by the ARM7TDMI core
(alu) is the contents of that address.
Note
Copyright © 1994-2001. All rights reserved.
Instruction Cycle Timings
6-7