SAM7X256 Atmel Corporation, SAM7X256 Datasheet - Page 354

• Manufacturer Part Number: SAM7X256
• Manufacturer: Atmel Corporation

Specifications of SAM7X256

• Flash (kbytes): 256 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 55 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 62
• Ext Interrupts: 62
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Twi (i2c): 1
• Uart: 3
• Can: 1
• Ssc: 1
• Ethernet: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.3
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Figure 31-3. SSC Functional Block Diagram
31.6.1
354
SAM7X512/256/128
Clock Management
APB
MCK
PDC
Interface
Divider
Clock
User
The transmitter clock can be generated by:
The receiver clock can be generated by:
Furthermore, the transmitter block can generate an external clock on the TK I/O pad, and the
receiver block can generate an external clock on the RK I/O pad.
This allows the SSC to support many Master and Slave Mode data transfers.
• an external clock received on the TK I/O pad
• the receiver clock
• the internal clock divider
• an external clock received on the RK I/O pad
• the transmitter clock
• the internal clock divider
Interrupt Control
AIC
TF
RF
TX Clock
RF
TF
TK Input
RK Input
RX clock
Selector
Selector
Start
Start
TX PDC
RX PDC
Load Shift
Load Shift
Transmitter
Transmit Clock
Receive Clock
Controller
Controller
Receiver
Transmit Holding
Receive Holding
Register
Register
Transmit Shift Register
Receive Shift Register
RX Clock
TX clock
Holding Register
Holding Register
Transmit Sync
Receive Sync
Clock Output
Clock Output
Frame Sync
Frame Sync
Controller
Controller
Controller
Controller
6120I–ATARM–06-Apr-11
TK
RD
TD
RK
RF
TF