atmega3250v-8auatmega325v-8ai ATMEL Corporation, atmega3250v-8auatmega325v-8ai Datasheet - Page 359
atmega3250v-8auatmega325v-8ai
Manufacturer Part Number
atmega3250v-8auatmega325v-8ai
Description
Atmega3250 8-bit Microcontroller With In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.ATMEGA3250V-8AUATMEGA325V-8AI.pdf
(362 pages)
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24 JTAG Interface and On-chip Debug System ...................................... 217
25 IEEE 1149.1 (JTAG) Boundary-scan ................................................... 223
26 Boot Loader Support – Read-While-Write Self-Programming ......... 250
2570L–AVR–08/07
23.3
23.4
23.5
23.6
23.7
23.8
24.1
24.2
24.3
24.4
24.5
24.6
24.7
24.8
24.9
24.10
25.1
25.2
25.3
25.4
25.5
25.6
25.7
25.8
26.1
26.2
26.3
26.4
26.5
26.6
26.7
26.8
Starting a Conversion ....................................................................................202
Prescaling and Conversion Timing ................................................................203
Changing Channel or Reference Selection ...................................................205
ADC Noise Canceler .....................................................................................206
ADC Conversion Result .................................................................................210
Register Description ......................................................................................212
Features ........................................................................................................217
Overview ........................................................................................................217
TAP – Test Access Port ................................................................................217
TAP Controller ...............................................................................................219
Using the Boundary-scan Chain ....................................................................220
Using the On-chip Debug System .................................................................220
On-chip Debug Specific JTAG Instructions ...................................................221
Using the JTAG Programming Capabilities ...................................................222
Bibliography ...................................................................................................222
Register Description ......................................................................................222
Features ........................................................................................................223
System Overview ...........................................................................................223
Data Registers ...............................................................................................223
Boundary-scan Specific JTAG Instructions ...................................................225
Boundary-scan Related Register in I/O Memory ...........................................226
Boundary-scan Chain ....................................................................................227
Boundary-scan Order ....................................................................................236
Boundary-scan Description Language Files ..................................................249
Features ........................................................................................................250
Overview ........................................................................................................250
Application and Boot Loader Flash Sections .................................................250
Read-While-Write and No Read-While-Write Flash Sections ........................251
Boot Loader Lock Bits ...................................................................................253
Entering the Boot Loader Program ................................................................254
Addressing the Flash During Self-Programming ...........................................255
Self-Programming the Flash ..........................................................................255
ATmega325/3250/645/6450
v
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