SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 350

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SAM4S16C

Manufacturer Part Number
SAM4S16C
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of SAM4S16C

Flash (kbytes)
1024 Kbytes
Pin Count
100
# Of Touch Channels
32
Hardware Qtouch Acquisition
No
Max I/o Pins
79
Ext Interrupts
79
Usb Transceiver
1
Quadrature Decoder Channels
2
Usb Speed
Full Speed
Usb Interface
Device
Spi
3
Twi (i2c)
2
Uart
4
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
1000
Analog Comparators
1
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
128
Self Program Memory
YES
External Bus Interface
1
Dram Memory
No
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
1.62 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
6
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
19.4.3.7
19.4.3.8
19.4.3.9
350
350
SAM4S
SAM4S
Security Bit Protection
Unique Identifier
User Signature
When the security is enabled, access to the Flash, either through the JTAG/SWD interface or
through the Fast Flash Programming Interface, is forbidden. This ensures the confidentiality of
the code programmed in the Flash.
The security bit is GPNVM0.
Disabling the security bit can only be achieved by asserting the ERASE pin at 1, and after a full
Flash erase is performed. When the security bit is deactivated, all accesses to the Flash are
permitted.
Each part is programmed with a 128-bit Unique Identifier. It can be used to generate keys for
example.
To read the Unique Identifier the sequence is:
Note that during the sequence, the software can not run out of Flash (or the second plane in
case of dual plane).
Each part contains a User Signature of 512-bytes. It can be used by the user for storage. Read,
write and erase of this area is allowed.
To read the User Signature, the sequence is as follows:
Note that during the sequence, the software can not run out of Flash (or the second plane, in
case of dual plane).
• Send the Start Read unique Identifier command (STUI) by writing the Flash Command
• When the Unique Identifier is ready to be read, the FRDY bit in the Flash Programming
• The Unique Identifier is located in the first 128 bits of the Flash memory mapping, thus, at the
• To stop the Unique Identifier mode, the user needs to send the Stop Read unique Identifier
• When the Stop read Unique Identifier command (SPUI) has been performed, the FRDY bit in
• Send the Start Read User Signature command (STUS) by writing the Flash Command
• When the User Signature is ready to be read, the FRDY bit in the Flash Programming Status
• The User Signature is located in the first 512 bytes of the Flash memory mapping, thus, at
• To stop the User Signature mode, the user needs to send the Stop Read User Signature
• When the Stop Read User Signature command (SPUI) has been performed, the FRDY bit in
Register with the STUI command.
Status Register (EEFC_FSR) falls.
address
command (SPUI) by writing the Flash Command Register with the SPUI command.
the Flash Programming Status Register (EEFC_FSR) rises. If an interrupt was enabled by
setting the FRDY bit in EEFC_FMR, the interrupt line of the NVIC is activated.
Register with the STUS command.
Register (EEFC_FSR) falls.
the address 0x80000-0x801FF.
command (SPUS) by writing the Flash Command Register with the SPUS command.
the Flash Programming Status Register (EEFC_FSR) rises. If an interrupt was enabled by
setting the FRDY bit in EEFC_FMR, the interrupt line of the NVIC is activated.
0x80000-0x803FF
.
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11

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