SAM3S4B Atmel Corporation, SAM3S4B Datasheet - Page 312

• 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 19-6.
Table 19-5.
312
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
SAM3S
Programmer Action
Sets MODE and DATA signals
Clears NCMD signal
Waits for RDY low
Sets DATA signal in tristate
Clears NOE signal
Waits for NVALID low
Reads value on DATA Bus
Sets NOE signal
Waits for NVALID high
Sets DATA in output mode
Sets NCMD signal
Waits for RDY high
Read Handshake
SAM3SxA (48 pins) Parallel Programming Timing, Read Sequence
MODE[3:0]
DATA[15:0]
NVALID
NCMD
NOE
RDY
1
2
Adress IN
ADDR
3
Waits for NCMD low
Latch MODE and DATA
Clears RDY signal
Sets DATA bus in output mode and outputs
the flash contents.
Clears NVALID signal
Waits for NOE high
Sets NVALID signal
Waits for NCMD high
Sets RDY signal
Device Action
Waits for NOE Low
Sets DATA bus in input mode
4
5
Z
6
7
Data OUT
8
9
10
11
X
12
13
IN
DATA I/O
Input
Input
Input
Input
Tristate
Output
Output
Output
Output
X
Input
Input
Input
6500C–ATARM–8-Feb-11