ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 128
![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
- Current page: 128 of 445
- Download datasheet (6Mb)
12.8.3
12.9
8077H–AVR–12/09
Address
+0x00
+0x01
+0x02
Register Summary
CTRL - PMIC Control Register
Name
STATUS
INTPRI
CTRL
change the priority queue. This register is not reinitialized to its initial value if round-robing
scheduling is disabled, so if default static priority is needed the register must be written to zero.
• Bit 7 - RREN: Round-robin Scheduling Enable
When the RREN bit is set the round-robin scheduling scheme is enabled for low level interrupts.
When this bit is cleared, the priority is static according to interrupt vector address where the low-
est address has the highest priority.
• Bit 6 - IVSEL: Interrupt Vector Select
When the IVSEL bit is cleared (zero), the interrupt vectors are placed at the start of the Applica-
tion section in flash. When this bit is set (one), the interrupt vectors are moved to the beginning
of the Boot section of the Flash. Refer to the device data sheet for the absolute address.
This bit is protected by the Configuration Change Protection mechanism, refer to
”Configuration Change Protection” on page 12
• Bit 5:3 - Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
• Bit 2 - HILVLEN: High Level Interrupt Enable
When this bit is set all high level interrupts are enabled. If this bit is cleared, high level interrupt
requests will be ignored.
• Bit 1 - MEDLVLEN: Medium Level Interrupt Enable
When this bit is set all medium level interrupts are enabled. If this bit is cleared, medium level
interrupt requests will be ignored.
• Bit 0 - LOLVLEN: Low Level Interrupt Enable
When this bit is set all low level interrupts are enabled. If this bit is cleared, low level interrupt
requests will be ignored.
NMIEX
Bit 7
Bit
+0x02
Read/Write
Initial Value
RREN
Bit 6
IVSEL
RREN
-
R/W
7
0
IVSEL
Bit 5
R/W
6
0
-
-
R
5
0
-
Bit 4
-
-
INTPRI[7:0]
R
4
0
-
Bit 3
-
-
for details.
R
3
0
-
HILVLEN
HILVLEX
Bit 2
HILVLEN
R/W
2
0
MEDLVLEN
MEDLVLEX
Bit 1
MEDLVLEN
R/W
1
0
LOLVLEN
LOLVLEX
XMEGA A
Bit 0
LOLVLEN
R/W
0
0
Section 3.12
Page
CTRL
127
127
128
128
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