ATSAM3S1BA-AU Atmel, ATSAM3S1BA-AU Datasheet - Page 407
ATSAM3S1BA-AU
Manufacturer Part Number
ATSAM3S1BA-AU
Description
IC MCU 32BIT 64KB FLASH 64LQFP
Manufacturer
Atmel
Series
SAM3Sr
Specifications of ATSAM3S1BA-AU
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
47
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.62 V ~ 1.95 V
Data Converters
A/D 10x10/12b, D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LQFP
Controller Family/series
ATSAM3S
No. Of I/o's
47
Ram Memory Size
16KB
Cpu Speed
64MHz
No. Of Timers
6
Rohs Compliant
Yes
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
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24. Peripheral DMA Controller (PDC)
24.1
24.2
6500C–ATARM–8-Feb-11
Description
Embedded Characteristics
The Peripheral DMA Controller (PDC) transfers data between on-chip serial peripherals and the
on- and/or off-chip memories. The link between the PDC and a serial peripheral is operated by
the AHB to ABP bridge.
The user interface of each PDC channel is integrated into the user interface of the peripheral it
serves. The user interface of mono directional channels (receive only or transmit only), contains
two 32-bit memory pointers and two 16-bit counters, one set (pointer, counter) for current trans-
fer and one set (pointer, counter) for next transfer. The bi-directional channel user interface
contains four 32-bit memory pointers and four 16-bit counters. Each set (pointer, counter) is
used by current transmit, next transmit, current receive and next receive.
Using the PDC removes processor overhead by reducing its intervention during the transfer.
This significantly reduces the number of clock cycles required for a data transfer, which
improves microcontroller performance.
To launch a transfer, the peripheral triggers its associated PDC channels by using transmit and
receive signals. When the programmed data is transferred, an end of transfer interrupt is gener-
ated by the peripheral itself.
The Peripheral DMA Controller handles transfer requests from the channel according to the fol-
lowing priorities (Low to High priorities):
Table 24-1.
• Handles data transfer between peripherals and memories
• Low bus arbitration overhead
• Next Pointer management for reducing interrupt latency requirement
Instance Name
USART1
USART0
UART1
UART0
HSMCI
– One Master Clock cycle needed for a transfer from memory to peripheral
– Two Master Clock cycles needed for a transfer from peripheral to memory
PWM
TWI1
TWI0
PIOA
DAC
SSC
SPI
Peripheral DMA Controller
Channel T/R
Transmit
Transmit
Transmit
Transmit
Transmit
Transmit
Transmit
Transmit
Transmit
Transmit
Transmit
Receive
100 & 64 Pins
x
x
x
x
x
x
x
x
x
x
x
x
48 Pins
N/A
N/A
N/A
N/A
SAM3S Preliminary
x
x
x
x
x
x
x
x
407
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