ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 445

• Manufacturer Part Number: ATMEGA2561V
• Description: 8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

2549K–AVR–01/07
Boot Loader Support – Read-While-Write Self-Programming ..... 323
Memory Programming..................................................................... 342
Electrical Characteristics................................................................ 374
Typical Characteristics ................................................................... 390
Data Registers .................................................................................................. 308
Boundary-scan Specific JTAG Instructions ...................................................... 310
Boundary-scan Chain ....................................................................................... 311
Boundary-scan Related Register in I/O Memory .............................................. 314
ATmega640/1280/1281/2560/2561 Boundary-scan Order............................... 315
Boundary-scan Description Language Files ..................................................... 315
Boot Loader Features ....................................................................................... 323
Application and Boot Loader Flash Sections .................................................... 323
Read-While-Write and No Read-While-Write Flash Sections........................... 323
Boot Loader Lock Bits....................................................................................... 326
Entering the Boot Loader Program ................................................................... 327
Addressing the Flash During Self-Programming .............................................. 328
Self-Programming the Flash ............................................................................. 328
Register Description ......................................................................................... 340
Program And Data Memory Lock Bits .............................................................. 342
Fuse Bits........................................................................................................... 343
Signature Bytes ................................................................................................ 345
Calibration Byte ................................................................................................ 345
Page Size ......................................................................................................... 345
Parallel Programming Parameters, Pin Mapping, and Commands .................. 345
Parallel Programming ....................................................................................... 348
Serial Downloading........................................................................................... 356
Programming via the JTAG Interface ............................................................... 361
Absolute Maximum Ratings*............................................................................. 374
DC Characteristics............................................................................................ 374
External Clock Drive Waveforms ...................................................................... 376
External Clock Drive ......................................................................................... 376
Maximum speed vs. V
2-wire Serial Interface Characteristics .............................................................. 379
SPI Timing Characteristics ............................................................................... 380
ADC Characteristics – Preliminary Data........................................................... 382
Calibrated Internal RC Oscillator Accuracy ...................................................... 384
External Data Memory Timing .......................................................................... 385
Active Supply Current ....................................................................................... 390
Idle Supply Current ........................................................................................... 393
Supply Current of IO modules .......................................................................... 395
Power-down Supply Current............................................................................. 397
Power-save Supply Current.............................................................................. 398
ATmega640/1280/1281/2560/2561
CC ......................................................................................................................... 377
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