SAM3U2C Atmel Corporation, SAM3U2C Datasheet - Page 314

• Manufacturer Part Number: SAM3U2C
• Manufacturer: Atmel Corporation

Specifications of SAM3U2C

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 96 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 28
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 57
• Ext Interrupts: 57
• Usb Transceiver: 1
• Quadrature Decoder Channels: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device
• Spi: 4
• Twi (i2c): 1
• Uart: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 36
• 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: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Figure 21-6. Example of Partial Page Programming
21.4.3.3
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
X words
X words
X words
X words
Erase Commands
So Page Y erased
Erase All Flash
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
32-bit wide
Step 1.
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
...
...
...
...
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
By using the WP command, a page can be programmed in several steps if it has been erased
before (see
The Partial Programming mode works only with 128-bit (or higher) boundaries. It cannot be used
with boundaries lower than 128 bits (8, 16 or 32-bit for example).
Erase commands are allowed only on unlocked regions. Depending on the Flash memory, sev-
eral commands can be used to erase the Flash:
The erase sequence is:
Two errors can be detected in the EEFC_FSR register after a programming sequence:
• Command Error: a bad keyword has been written in the EEFC_FCR register.
• Lock Error: the page to be programmed belongs to a locked region. A command must be
• Erase all memory (EA): all memory is erased. The processor must not fetch code from the
• Erase starts as soon as one of the erase commands and the FARG field are written in the
• When the programming completes, the FRDY bit in the Flash Programming Status Register
• Command Error: a bad keyword has been written in the EEFC_FCR register.
• Lock Error: at least one page to be erased belongs to a locked region. The erase command
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
previously run to unlock the corresponding region.
Flash memory.
Flash Command Register.
(EEFC_FSR) rises. If an interrupt has been enabled by setting the FRDY bit in EEFC_FMR,
the interrupt line of the NVIC is activated.
has been refused, no page has been erased. A command must be run previously to unlock
the corresponding region.
Figure 21-6
Programming of the second part of Page Y
below).
FF
FF
FF
CA FE
CA FE
CA FE
FF
FF
FF
FF
FF
FF
32-bit wide
FF
FF
FF
FF
FF
FF
FF
FF
FF
Step 2.
...
...
...
...
FF
FF
FF
CA
CA
CA
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FE
FE
FE
Programming of the third part of Page Y
SAM3U Series
SAM3U Series
FF
FF
FF
CA FE
CA FE
CA FE
DE CA
DE CA
DE CA
FF
FF
FF
32-bit wide
FF
FF
FF
FF
FF
FF
Step 3.
...
...
...
...
CA
CA
CA
FF
FF
FF
DE CA
DE CA
DE CA
FF
FF
FF
FF
FF
FF
FE
FE
FE
FF
FF
FF
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