Rainbow-electronics ATmega163L Instrukcja Użytkownika Pobierz pdf (Strona 125)

ATmega163(L)

125

Figure 81. Parallel Programming

ATmega163

VCC

+5V

GND

XTAL1

PD1

PD2

PD3

PD4

PD5

PD6

PB7 - PB0

DATA

RESET

PD7

+12 V

BS1

XA0

XA1

RDY/BSY

PAGEL

PA0

BS2

Table 55. 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

PD2 I Output Enable (Active low)

WR 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

PAGEL PD7 I Program Memory Page Load

BS2 PA0 I Byte Select 2 (‘0’ selects low byte, ‘1’ selects 2’nd high byte)

DATA PB7-0 I/O Bidirectional Databus (Output when OE

is low)

Table 56. XA1 and XA0 Coding

XA1 XA0 Action when XTAL1 is Pulsed

0 0 Load Flash or EEPROM Address (High or low address byte determined by BS1)

0 1 Load Data (High or Low data byte for Flash determined by BS1)

1 0 Load Command

1 1 No Action, Idle

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 155 156

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