ATMEGA325-16AJ ATMEL [ATMEL Corporation], ATMEGA325-16AJ Datasheet - Page 261
ATMEGA325-16AJ
Manufacturer Part Number
ATMEGA325-16AJ
Description
8-bit Microcontroller with In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA325-16AJ.pdf
(347 pages)
- Current page: 261 of 347
- Download datasheet (3Mb)
Serial Programming Pin
Mapping
2570A–AVR–09/04
Table 114. XA1 and XA0 Coding
Table 115. Command Byte Bit Coding
Table 116. No. of Words in a Page and No. of Pages in the Flash
Table 117. No. of Words in a Page and No. of Pages in the EEPROM
Table 118. Pin Mapping Serial Programming
EEPROM Size
XA1
(32/64K bytes)
16/32K words
1K/2K bytes
0
0
1
1
Flash Size
Command Byte
Symbol
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
0000 1000
0000 0100
0000 0010
0000 0011
MOSI
MISO
SCK
XA0
0
1
0
1
Page Size
Page Size
4/8 bytes
64/128
Action when XTAL1 is Pulsed
Load Flash or EEPROM Address (High or low address byte
determined by BS1).
Load Data (High or Low data byte for Flash determined by BS1).
Load Command
No Action, Idle
words
Command Executed
Chip Erase
Write Fuse bits
Write Lock bits
Write Flash
Write EEPROM
Read Signature Bytes and Calibration byte
Read Fuse and Lock bits
Read Flash
Read EEPROM
Pins
PB2
PB3
PB1
EEA[1/2:0]
PCWORD
PCWORD
PC[5/6:0]
ATmega325/3250/645/6450
I/O
O
I
I
No. of Pages
No. of Pages
256
256
Serial Data out
Serial Data in
Description
Serial Clock
[13/14:6/7]
[13/14:2/3]
PCPAGE
PCPAGE
EEA
PC
EEAMSB
PCMSB
13/14
13/14
261
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