ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 25
![MCU AVR 256KB FLASH A3B 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATXMEGA256A3B-MH
Manufacturer Part Number
ATXMEGA256A3B-MH
Description
MCU AVR 256KB FLASH A3B 64-QFN
Manufacturer
Atmel
Series
AVR® XMEGAr
Specifications of ATXMEGA256A3B-MH
Core Processor
AVR
Core Size
8/16-Bit
Speed
32MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
49
Program Memory Size
256KB (128K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.6 V ~ 3.6 V
Data Converters
A/D 16x12b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-MLF®, 64-QFN
Processor Series
ATXMEGA256x
Core
AVR8
Data Bus Width
8 bit, 16 bit
Data Ram Size
16 KB
Interface Type
I2C, SPI, USART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
49
Number Of Timers
7
Operating Supply Voltage
1.6 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit, 8 Channel
On-chip Dac
12 bit, 2 Channel
For Use With
ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATXMEGA256A3B-MU
ATXMEGA256A3B-MU
ATXMEGA256A3B-MU
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATXMEGA256A3B-MH
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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- Download datasheet (6Mb)
4.14
4.15
4.15.1
4.15.2
4.15.3
8077H–AVR–12/09
IO Memory Protection
Register Description - NVM Controller
ADDR2 - Non-Volatile Memory Address Register 2
ADDR1 - Non-Volatile Memory Address Register 1
ADDR0 - Non-Volatile Memory Address Register 0
from the application software. As long as JTAG is disabled the I/O pins required for JTAG can be
used as normal I/O pins.
Some features in the device is regarded to be critical for safety in some applications. Due to this,
it is possible to lock the IO register related to the Event System and the Advanced Waveform
Extensions. As long as the lock is enabled, all related IO registers are locked and they can not
be written from the application software. The lock registers themselves are protected by the
Configuration Change Protection mechanism, for details refer to
tion” on page
The ADDR2, ADDR1 and ADDR0 registers represents the 24-bit value ADDR.
• Bit 7:0 - ADDR[23:16]: NVM Address Register Byte 2
This register gives the address extended byte when accessing application and boot section.
• Bit 7:0 - ADDR[15:8]: NVM Address Register Byte 1
This register gives the address high byte when accessing either of the memory locations.
• Bit 7:0 - ADDR[7:0]: NVM Address Register Byte 0
This register gives the address low byte when accessing either of the memory locations.
Bit
+0x02
Read/Write
Initial Value
Bit
+0x01
Read/Write
Initial Value
Bit
+0x00
Read/Write
Initial Value
12.
R/W
R/W
R/W
7
0
7
0
7
0
R/W
R/W
R/W
6
0
6
0
6
0
R/W
R/W
R/W
5
0
5
0
5
0
R/W
R/W
R/W
4
0
4
0
4
0
ADDR[23:16]
ADDR[15:8]
ADDR[7:0]
R/W
R/W
R/W
3
0
3
0
3
0
R/W
R/W
R/W
2
0
2
0
2
0
”Configuration Change Protec-
R/W
R/W
R/W
1
0
1
0
1
0
XMEGA A
R/W
R/W
R/W
0
0
0
0
0
0
ADDR2
ADDR1
ADDR0
25
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