426
7679H–CAN–08/08
AT90CAN32/64/128
24 Boot Loader Support – Read-While-Write Self-Programming ......... 321
24.1 Features ..........................................................................................................321
24.2 Application and Boot Loader Flash Sections ..................................................321
24.3 Read-While-Write and No Read-While-Write Flash Sections .........................321
24.4 Boot Loader Lock Bits .....................................................................................324
24.5 Entering the Boot Loader Program .................................................................325
24.6 Addressing the Flash During Self-Programming ............................................327
24.7 Self-Programming the Flash ...........................................................................328
25 Memory Programming ......................................................................... 336
25.1 Program and Data Memory Lock Bits .............................................................336
25.2 Fuse Bits .........................................................................................................337
25.3 Signature Bytes ..............................................................................................339
25.4 Calibration Byte ..............................................................................................339
25.5 Parallel Programming Overview .....................................................................339
25.6 Parallel Programming .....................................................................................342
25.7 SPI Serial Programming Overview .................................................................348
25.8 SPI Serial Programming .................................................................................349
25.9 JTAG Programming Overview ........................................................................352
26 Electrical Characteristics
(1) ............................................................................................... 365
26.1 Absolute Maximum Ratings* ...........................................................................365
26.2 DC Characteristics ..........................................................................................366
26.3 External Clock Drive Characteristics ..............................................................367
26.4 Maximum Speed vs. VCC ...............................................................................368
26.5 Two-wire Serial Interface Characteristics .......................................................369
26.6 SPI Timing Characteristics .............................................................................370
26.7 CAN Physical Layer Characteristics ...............................................................372
26.8 ADC Characteristics .......................................................................................373
26.9 External Data Memory Characteristics ...........................................................375
26.10 Parallel Programming Characteristics ............................................................380
27 Decoupling Capacitors ........................................................................ 383
28 AT90CAN32/64/128 Typical Characteristics ...................................... 384
28.1 Active Supply Current .....................................................................................384
28.2 Idle Supply Current .........................................................................................387
28.3 Power-down Supply Current ...........................................................................389
28.4 Power-save Supply Current ............................................................................390
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