ATSAM3S4AA-MU Atmel, ATSAM3S4AA-MU Datasheet - Page 368
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ATSAM3S4AA-MU
Manufacturer Part Number
ATSAM3S4AA-MU
Description
IC MCU 32BIT 256KB FLASH 48QFN
Manufacturer
Atmel
Series
SAM3Sr
Specifications of ATSAM3S4AA-MU
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
64MHz
Connectivity
I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
34
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.62 V ~ 1.95 V
Data Converters
A/D 8x10/12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
Processor Series
ATSAM3x
Core
ARM Cortex M3
3rd Party Development Tools
JTRACE-CM3, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
ATSAM3S-EK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATSAM3S4AA-MU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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23.8
23.8.1
23.8.1.1
23.8.1.2
368
Standard Read and Write Protocols
SAM3S Preliminary
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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