SAM3S4B Atmel Corporation, SAM3S4B Datasheet - Page 379

• Manufacturer Part Number: SAM3S4B
• Manufacturer: Atmel Corporation

Specifications of SAM3S4B

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 64 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 23
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 79
• Ext Interrupts: 79
• Usb Transceiver: 1
• Quadrature Decoder Channels: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 10
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1000
• Analog Comparators: 1
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 48
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Figure 23-15. Early Read Wait State: NCS Controlled Write with No Hold Followed by a Read with No NCS Setup
Figure 23-16. Early Read Wait State: NWE-controlled Write with No Hold Followed by a Read with one Set-up Cycle
6500C–ATARM–8-Feb-11
external write controlling signal
internal write controlling signal
A[23:0]
D[7:0]
MCK
NRD
NCS
A[25:2]
(NWE)
D[7:0]
MCK
NRD
(WRITE_MODE = 0)
write cycle
no hold
(WRITE_MODE = 1)
write cycle
Early Read
no hold
wait state
Early Read
(READ_MODE = 0 or READ_MODE = 1)
wait state
no setup
(READ_MODE = 0 or READ_MODE = 1)
read setup = 1
read cycle
read cycle
SAM3S
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