ATSAM3S1BA-AU Atmel, ATSAM3S1BA-AU Datasheet - Page 541
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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29.7.1.1
6500C–ATARM–8-Feb-11
6500C–ATARM–8-Feb-11
Clock Divider
The receiver clock can be generated by:
Furthermore, the transmitter block can generate an external clock on the TK I/O pad, and the
receiver block can generate an external clock on the RK I/O pad.
This allows the SSC to support many Master and Slave Mode data transfers.
Figure 29-4. Divided Clock Block Diagram
The Master Clock divider is determined by the 12-bit field DIV counter and comparator (so its
maximal value is 4095) in the Clock Mode Register SSC_CMR, allowing a Master Clock division
by up to 8190. The Divided Clock is provided to both the Receiver and Transmitter. When this
field is programmed to 0, the Clock Divider is not used and remains inactive.
When DIV is set to a value equal to or greater than 1, the Divided Clock has a frequency of Mas-
ter Clock divided by 2 times DIV. Each level of the Divided Clock has a duration of the Master
Clock multiplied by DIV. This ensures a 50% duty cycle for the Divided Clock regardless of
whether the DIV value is even or odd.
Figure 29-5.
Maximum
MCK / 2
• an external clock received on the RK I/O pad
• the transmitter clock
• the internal clock divider
Divided Clock Generation
Divided Clock
Divided Clock
Master Clock
Master Clock
DIV = 3
DIV = 1
MCK
/ 2
Divided Clock Frequency = MCK/2
Divided Clock Frequency = MCK/6
Clock Divider
Minimum
MCK / 8190
12-bit Counter
SSC_CMR
SAM3S Preliminary
SAM3S Preliminary
Divided Clock
541
541
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