AT90PWM2 datasheet(293/365 Pages) ATMEL

293 / 365 page

293

AT90PWM2/3

4317B–AVR–02/05

PAGEL

PD7

Program memory and EEPROM Data

Page Load

BS2

PE2

Byte Select 2 (“0” selects Low byte, “1”

selects 2’nd High byte)

DATA

PB[7:0]

I/O

Bi-directional Data bus (Output when OE is

low)

Table 124. Pin Values Used to Enter Programming Mode

Symbol

Value

PAGEL

Prog_enable[3]

XA1

Prog_enable[2]

XA0

Prog_enable[1]

BS1

Prog_enable[0]

Table 125. XA1 and XA0 Coding

XA1

XA0

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

Table 126. Command Byte Bit Coding

Command Byte

Command Executed

1000 0000

Chip Erase

0100 0000

Write Fuse bits

0010 0000

Write Lock bits

0001 0000

Write Flash

0001 0001

Write EEPROM

0000 1000

Read Signature Bytes and Calibration byte

0000 0100

Read Fuse and Lock bits

0000 0010

Read Flash

0000 0011

Read EEPROM

Table 123. Pin Name Mapping (Continued)

Signal Name in

Programming Mode

Pin Name

I/O

Function

AT90PWM2 Datasheet(PDF) 293 Page - ATMEL Corporation

AT90PWM2 Datasheet(HTML) 293 Page - ATMEL Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL