Rainbow-electronics Atmega169L Manuel d'utilisateur Page 314
- Page / 317
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
iv
ATmega169V/L
2514A–AVR–08/02
JTAG Interface and On-chip Debug System .................................. 225
Overview........................................................................................................... 225
Test Access Port – TAP.................................................................................... 225
TAP Controller .................................................................................................. 227
Using the Boundary-scan Chain....................................................................... 228
Using the On-chip Debug System .................................................................... 228
On-chip Debug Specific JTAG Instructions ...................................................... 229
On-chip Debug Related Register in I/O Memory .............................................. 230
Using the JTAG Programming Capabilities ...................................................... 230
Bibliography ...................................................................................................... 230
IEEE 1149.1 (JTAG) Boundary-scan ............................................... 231
Features............................................................................................................ 231
System Overview.............................................................................................. 231
Data Registers .................................................................................................. 231
Boundary-scan Specific JTAG Instructions ...................................................... 233
Boundary-scan Related Register in I/O Memory .............................................. 235
Boundary-scan Chain ....................................................................................... 235
ATmega169 Boundary-scan Order................................................................... 245
Boundary-scan Description Language Files ..................................................... 250
Boot Loader Support – Read-While-Write Self-Programming...... 251
Boot Loader Features....................................................................................... 251
Application and Boot Loader Flash Sections .................................................... 251
Read-While-Write and No Read-While-Write Flash Sections........................... 251
Boot Loader Lock Bits....................................................................................... 254
Entering the Boot Loader Program ................................................................... 255
Addressing the Flash During Self-Programming .............................................. 257
Self-Programming the Flash............................................................................. 258
Memory Programming...................................................................... 265
Program And Data Memory Lock Bits .............................................................. 265
Fuse Bits........................................................................................................... 266
Signature Bytes ................................................................................................ 268
Calibration Byte ................................................................................................ 268
Parallel Programming Parameters, Pin Mapping, and Commands .................. 268
Serial Programming Pin Mapping ..................................................................... 270
Parallel Programming ....................................................................................... 271
Serial Downloading........................................................................................... 279
Programming via the JTAG Interface ............................................................... 283
Electrical Characteristics................................................................. 296
Absolute Maximum Ratings*............................................................................. 296
External Clock Drive Waveforms ...................................................................... 298
External Clock Drive ......................................................................................... 298
SPI Timing Characteristics ............................................................................... 298
- Features 1
- ATmega169V/L 10
- DATA B U S 55
- 8-bit Timer/Counter0 78
- Timer/Counter Clock 79
- = (8-bit Comparator ) 80
- DATA BU S 80
- Compare Match Output 82
- 2514A–AVR–08/02 149
- 2514A–AVR–08/02 0M 317
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