at90pwm81-16se ATMEL Corporation, at90pwm81-16se Datasheet - Page 254

• Manufacturer Part Number: at90pwm81-16se
• Description: 8-bit Avr Microcontroller With 8k Bytes In- System Programmable Flash
• Manufacturer: ATMEL Corporation

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Serial Programming Pin Mapping
AT90PWM81
Table 22-9.
Table 22-10.
Table 22-11.
Table 22-12.
Table 22-13.
Device
AT90PWM81
Device
AT90PWM81
XA1
0
0
1
1
Command Byte
Symbol
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
0000 1000
0000 0100
0000 0010
MOSI
MISO
0000 0011
SCK
XA1 and XA0 Coding
Command Byte Bit Coding
No. of Words in a Page and No. of Pages in the Flash
No. of Words in a Page and No. of Pages in the EEPROM
Pin Mapping Serial Programming
XA0
0
1
0
1
EEPROM
512 bytes
Flash Size
(8K bytes)
4K words
Size
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
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
Page Size
4 bytes
Page Size
32 words
PCWORD
EEA[1:0]
I/O
PCWORD
O
I
I
PC[4:0]
No. of Pages
128
No. of
Pages
128
Serial Data out
Serial Data in
Description
Serial Clock
PCPAGE
EEA[8:2]
PCPAGE
PC[11:5]
7734M–AVR–03/10
EEAMSB
PCMSB
8
11