ATSAM3S4CA-AU Atmel, ATSAM3S4CA-AU Datasheet - Page 767
ATSAM3S4CA-AU
Manufacturer Part Number
ATSAM3S4CA-AU
Description
IC MCU 32BIT 256KB FLASH 100LQFP
Manufacturer
Atmel
Series
SAM3Sr
Specifications of ATSAM3S4CA-AU
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
64MHz
Connectivity
EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
79
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 16x10/12b, D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-LQFP
Controller Family/series
ATSAM3S
No. Of I/o's
79
Ram Memory Size
48KB
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
Cpu Family
AT91
Device Core
ARM Cortex-M3
Device Core Size
32b
Frequency (max)
64MHz
Total Internal Ram Size
48KB
# I/os (max)
79
Number Of Timers - General Purpose
6
Operating Supply Voltage (typ)
1.8/3.3V
Operating Supply Voltage (max)
1.95/3.6V
Operating Supply Voltage (min)
1.62V
On-chip Adc
16-chx12-bit
On-chip Dac
2-chx12-bit
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
100
Package Type
LQFP
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:
ATSAM3S4CA-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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Figure 34-20. 2-bit Gray Up/Down Counter.
34.6.16
34.6.17
6500C–ATARM–8-Feb-11
TIOAx
TIOBx
DOWNx
Write Protection System
Fault Mode
TC_RCx
In order to bring security to the Timer Counter, a write protection system has been implemented.
The write protection mode prevent the write of TC_BMR, TC_FMR, TC_CMRx, TC_SMMRx,
TC_RAx, TC_RBx, TC_RCx registers. When this mode is enabled and one of the protected reg-
isters write, the register write request canceled.
Due to the nature of the write protection feature, enabling and disabling the write protection
mode requires the use of a security code. Thus when enabling or disabling the write protection
mode the WPKEY field of the TC_WPMR register must be filled with the “TIM” ASCII code (cor-
responding to 0x54494D) otherwise the register write will be canceled.
At anytime, the TC_RCx registers can be used to perform a comparison on the respective cur-
rent channel counter value (TC_CVx) with the value of TC_RCx register.
The CPCSx flags can be set accordingly and an interrupt can be generated.
This interrupt is processed but requires an unpredictable amount of time to be achieve the
required action.
It is possible to trigger the FAULT output of the TIMER1 with CPCS from TC_SR0 register
and/or CPCS from TC_SR1 register. Each source can be independently enabled/disabled by
means of TC_FMR register.
This can be useful to detect an overflow on speed and/or position when QDEC is processed and
to act immediately by using the FAULT output.
Figure 34-21. Fault Output Generation
TC_SR0 flag CPCS
TC_SR1 flag CPCS
TC_FMR / ENCF0
TC_FMR / ENCF1
WAVEx = GCENx =1
AND
AND
OR
FAULT (to PWM input)
SAM3S Preliminary
767
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