ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 344

• 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

29. Program and Debug Interface
29.1
29.2
8077H–AVR–12/09
Features
Overview
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The Program and Debug Interface (PDI) is an Atmel proprietary interface for external program-
ming and on-chip debugging of the device.
The PDI supports high-speed programming of all Non-Volatile Memory (NVM) spaces; Flash,
EEPOM, Fuses, Lockbits and the User Signature Row. This is done by accessing the NVM Con-
troller, and executing NVM Controller commands as described in Memory Programming.
The On-Chip Debug (OCD) system supports fully intrusive operation. During debugging no soft-
ware or hardware resources in the device is used (except for four I/O pins required if JTAG
connection is used). The OCD system has full program flow control, supports unlimited number
of program and data breakpoints and has full access (read/write) to all memories.
Both programming and debugging can be done through two physical interfaces. The primary
interface is the PDI Physical. This is a 2-pin interface using the Reset pin for the clock input
Program and Debug Interface (PDI)
Programming Features
Debugging Features
JTAG Interface
– 2-pin interface for external programming and on-chip debugging
– Uses Reset pin and dedicated Test pin
– Flexible communication protocol
– 8 Flexible instructions.
– Minimal protocol overhead.
– Fast
– Reliable
– Non-Intrusive Operation
– Complete Program Flow Control
– 1 dedicated program address breakpoint or symbolic breakpoint for AVR studio/emulator
– 4 Hardware Breakpoints
– Unlimited Number of User Program Breakpoints
– Uses CPU for Accessing I/O, Data, and Program
– High Speed Operation
– JTAG (IEEE std. 1149.1 Compliant) Interface
– Boundary-scan Capabilities According to the IEEE std. 1149.1 (JTAG) Standard
– Programming features as for PDI
– On-chip debug features as for PDI
• No I/O pins required during programming or debugging
• 10 MHz programming clock at 1.8V V
• Built in error detection and handling
• Uses no hardware or software resource
• Symbolic Debugging Support in Hardware
• Go, Stop, Reset, Step into, Step over, Step out, Run-to-Cursor
• No limitation on system clock frequency
CC
XMEGA A
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