ATSAM3S4AA-MU Atmel, ATSAM3S4AA-MU Datasheet - Page 374
![IC MCU 32BIT 256KB FLASH 48QFN](/photos/7/34/73471/48-vqfn-6_543-5130_01-4_sml.jpg)
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
- Current page: 374 of 1118
- Download datasheet (24Mb)
23.8.4
23.8.4.1
23.8.4.2
374
SAM3S Preliminary
Write Mode
Write is Controlled by NWE (WRITE_MODE = 1):
Write is Controlled by NCS (WRITE_MODE = 0)
The WRITE_MODE parameter in the SMC_MODE register of the corresponding chip select indi-
cates which signal controls the write operation.
Figure 23-11
put on the bus during the pulse and hold steps of the NWE signal. The internal data buffers are
turned out after the NWE_SETUP time, and until the end of the write cycle, regardless of the
programmed waveform on NCS.
Figure 23-11. WRITE_MODE = 1. The write operation is controlled by NWE
Figure 23-12
put on the bus during the pulse and hold steps of the NCS signal. The internal data buffers are
turned out after the NCS_WR_SETUP time, and until the end of the write cycle, regardless of
the programmed waveform on NWE.
Figure 23-12. WRITE_MODE = 0. The write operation is controlled by NCS
A [23:0]
A [23:0]
D[7:0]
D[7:0]
NWE
NWE
MCK
MCK
NCS
NCS
shows the waveforms of a write operation with WRITE_MODE set to 1. The data is
shows the waveforms of a write operation with WRITE_MODE set to 0. The data is
6500C–ATARM–8-Feb-11
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