SAM7S256 Atmel Corporation, SAM7S256 Datasheet - Page 20

• Manufacturer Part Number: SAM7S256
• Manufacturer: Atmel Corporation

Specifications of SAM7S256

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 55 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 3
• Ssc: 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: 1.8/3.3
• 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

Preface
Timing diagram conventions
xx
The key provided in Figure P-1 explains the components used in timing diagrams. Any
variations are labeled when they occur. Therefore, no additional meaning must be
attached unless specifically stated.
Shaded bus and signal areas are undefined, so the bus or signal can assume any value
within the shaded area at that time. The actual level is unimportant and does not affect
normal operation.
Copyright © 1994-2001. All rights reserved.
Figure P-1 Key to timing diagram conventions
High impedance to stable bus
Bus to high impedance
HIGH/LOW to HIGH
HIGH to LOW
Bus change
Bus stable
Transient
Clock
ARM DDI 0029G