AT32UC3B0512 Atmel Corporation, AT32UC3B0512 Datasheet - Page 121
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AT32UC3B0512
Manufacturer Part Number
AT32UC3B0512
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(33 pages)
3.AT32UC3A0128.pdf
(159 pages)
4.AT32UC3B0128.pdf
(684 pages)
5.AT32UC3B0128.pdf
(107 pages)
Specifications of AT32UC3B0512
Flash (kbytes)
512 Kbytes
Pin Count
64
Max. Operating Frequency
60 MHz
Cpu
32-bit AVR
# Of Touch Channels
32
Hardware Qtouch Acquisition
No
Max I/o Pins
44
Ext Interrupts
44
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
4
Twi (i2c)
1
Uart
3
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
16
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
96
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.0-3.6 or (1.65-1.95+3.0-3.6)
Operating Voltage (vcc)
3.0-3.6 or (1.65-1.95+3.0-3.6)
Fpu
No
Mpu / Mmu
Yes / No
Timers
10
Output Compare Channels
16
Input Capture Channels
6
Pwm Channels
13
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- AT32UC3A0128 PDF datasheet #3
- AT32UC3B0128 PDF datasheet #4
- AT32UC3B0128 PDF datasheet #5
- Current page: 121 of 684
- Download datasheet (11Mb)
14.4
14.4.1
14.4.2
14.4.3
14.4.4
32059L–AVR32–01/2012
Functional description
Bus interfaces
Memory organization
User page
Read operations
The FLASHC has two bus interfaces, one HSB interface for reads from the flash array and
writes to the page buffer, and one Peripheral Bus (PB) interface for writing commands and con-
trol to and reading status from the controller.
To maximize performance for high clock-frequency systems, FLASHC interfaces to a flash block
with two read ports. The flash block has several parameters, given by the design of the flash
block. Refer to the “Memories” chapter for the device-specific values of the parameters.
The User page is an additional page, outside the regular flash array, that can be used to store
various data, like calibration data and serial numbers. This page is not erased by regular chip
erase. The User page can only be written and erased by proprietary commands. Read accesses
to the User page is performed just as any other read access to the flash. The address map of the
User page is given in
The FLASHC provides two different read modes:
Higher clock frequencies that would require more wait states are not supported by the flash
controller.
The programmer can select the wait states required by writing to the FWS field in the Flash Con-
trol Register (FCR). It is the responsibility of the programmer to select a number of wait states
compatible with the clock frequency and timing characteristics of the flash block.
In 0ws mode, only one of the two flash read ports is accessed. The other flash read port is idle.
In 1ws mode, both flash read ports are active. One read port reading the addressed word, and
the other reading the next sequential word.
If the clock frequency allows, the user should use 0ws mode, because this gives the lowest
power consumption for low-frequency systems as only one flash read port is read. Using 1ws
mode has a power/performance ratio approaching 0ws mode as the clock frequency
approaches twice the max frequency of 0ws mode. Using two flash read ports use twice the
power, but also give twice the performance.
• p pages (FLASH_P)
• w words in each page and in the page buffer (FLASH_W)
• pw words in total (FLASH_PW)
• f general-purpose fuse bits (FLASH_F)
• 1 security fuse bit
• 1 User Page
• 0 wait state (0ws) for clock frequencies < (access time of the flash plus the bus delay)
• 1 wait state (1ws) for clock frequencies < (access time of the flash plus the bus delay)/2
Figure
14-1.
121
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