SAM3S1B Atmel Corporation, SAM3S1B Datasheet - Page 368

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SAM3S1B

Manufacturer Part Number
SAM3S1B
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of SAM3S1B

Flash (kbytes)
64 Kbytes
Pin Count
64
Max. Operating Frequency
64 MHz
Cpu
Cortex-M3
# Of Touch Channels
23
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
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)
16
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
23.8
23.8.1
23.8.1.1
23.8.1.2
368
Standard Read and Write Protocols
SAM3S
Read Waveforms
NRD Waveform
NCS Waveform
In the following sections, NCS represents one of the NCS[0..3] chip select lines.
The read cycle is shown on
The read cycle starts with the address setting on the memory address bus.
Figure 23-5. Standard Read Cycle
The NRD signal is characterized by a setup timing, a pulse width and a hold timing.
Similarly, the NCS signal can be divided into a setup time, pulse length and hold time:
1. NRD_SETUP: the NRD setup time is defined as the setup of address before the NRD
2. NRD_PULSE: the NRD pulse length is the time between NRD falling edge and NRD
3. NRD_HOLD: the NRD hold time is defined as the hold time of address after the NRD
1. NCS_RD_SETUP: the NCS setup time is defined as the setup time of address before
2. NCS_RD_PULSE: the NCS pulse length is the time between NCS falling edge and
3. NCS_RD_HOLD: the NCS hold time is defined as the hold time of address after the
falling edge;
rising edge;
rising edge.
the NCS falling edge.
NCS rising edge;
NCS rising edge.
A[23:0]
D[7:0]
MCK
NRD
NCS
NCS_RD_SETUP
NRD_SETUP
Figure
23-5.
NCS_RD_PULSE
NRD_CYCLE
NRD_PULSE
NRD_HOLD
NCS_RD_HOLD
6500C–ATARM–8-Feb-11

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