Rainbow-electronics ATmega64M1 Manuel d'utilisateur télécharger pdf (Page 295)

100

101

295

8209A–AVR–08/09

ATmega16M1/32M1/64M1

Figure 28-1. Parallel Programming

Table 28-11. Pin Name Mapping

Signal Name in

Programming Mode Pin Name I/O Function

RDY/BSY

PD1 O

0: Device is busy programming, 1: Device is

ready for new command

OE PD2 I Output Enable (Active low)

PD3 I Write Pulse (Active low)

BS1 PD4 I

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

High byte)

XA0 PD5 I XTAL Action Bit 0

XA1 PD6 I XTAL Action Bit 1

PAG EL PD 7 I

Program memory and EEPROM Data Page

Load

BS2 PE2 I

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 28-12. Pin Values Used to Enter Programming Mode

Pin Symbol Value

PAGEL Prog_enable[3] 0

XA1 Prog_enable[2] 0

XA0 Prog_enable[1] 0

BS1 Prog_enable[0] 0

VCC

GND

XTAL1

XA0

RDY/BSY

RESET

+ 5V

AVCC

+ 5V

PD1

+ 12 V

PD7

PD6

PD5

PD4

PD3

PD2

PE2

XA1

BS2

PAGEL

BS1

DATA

PB[7:0]

1 2 ... 290 291 292 293 294 295 296 297 298 299 300 ... 342 343

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