ATSAM3S1BA-AU Atmel, ATSAM3S1BA-AU Datasheet - Page 867
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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36.6.3
6500C–ATARM–8-Feb-11
PWM Comparison Units
The PWM provides 8 independent comparison units able to compare a programmed value with
the current value of the channel 0 counter (which is the channel counter of all synchronous
channels,
erate pulses on the event lines (used to synchronize ADC, see
Lines”), to generate software interrupts and to trigger PDC transfer requests for the synchronous
channels (see
update” on page
Figure 36-14. Comparison Unit Block Diagram
The comparison x matches when it is enabled by the bit CEN in the
Register”
the comparison value defined by the field CV in
(PWM_CMPxV for the comparison x). If the counter of the channel 0 is center aligned (CALG =
1 in
is made when the counter is counting up or counting down (in left alignment mode CALG=0, this
bit is useless).
If a fault is active on the channel 0, the comparison is disabled and cannot match (see
36.6.2.6 “Fault
The user can define the periodicity of the comparison x by the fields CTR and CPR (in
PWM_CMPxV). The comparison is performed periodically once every CPR+1 periods of the
counter of the channel 0, when the value of the comparison period counter CPRCNT (in
PWM_CMPxM) reaches the value defined by CTR. CPR is the maximum value of the compari-
son period counter CPRCNT. If CPR=CTR=0, the comparison is performed at each period of the
counter of the channel 0.
The comparison x configuration can be modified while the channel 0 is enabled by using the
“PWM Comparison x Mode Update Register”
x). In the same way, the comparison x value can be modified while the channel 0 is enabled by
using the
comparison x).
“PWM Channel Mode Register”
“PWM Comparison x Value Update Register”
Section 36.6.2.7 “Synchronous
(PWM_CMPxM for the comparison x) and when the counter of the channel 0 reaches
CEN [PWM_CMPxM]
fault on channel 0
CV [PWM_CMPxV]
CNT [PWM_CCNT0]
CNT [PWM_CCNT0] is decrementing
CVM [PWM_CMPxV]
CALG [PWM_CMR0]
CPRCNT [PWM_CMPxM]
CTR [PWM_CMPxM]
Protection”).
“Method 3: Automatic write of duty-cycle values and automatic trigger of the
864).
), the bit CVM (in PWM_CMPxV) defines if the comparison
Channels”). These comparisons are intended to gen-
=
=
=
(PWM_CMPxMUPD registers for the comparison
1
0
1
“PWM Comparison x Value Register”
(PWM_CMPxVUPD registers for the
SAM3S Preliminary
Section 36.6.4 “PWM Event
“PWM Comparison x Mode
Comparison x
Section
867
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