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ATmega169P Datasheet(PDF) 299 Page - ATMEL Corporation |
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ATmega169P Datasheet(HTML) 299 Page - ATMEL Corporation |
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299 / 393 page  299 8018N–AVR–08/09 ATmega169P When pulsing WR or OE, the command loaded determines the action executed. The different Commands are shown in Table 27-12. Figure 27-1. Parallel Programming Table 27-9. 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). 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 and EEPROM data Page Load. BS2 PA0 I Byte Select 2 (“0” selects low byte, “1” selects 2’nd high byte). DATA PB7-0 I/O Bi-directional Data bus (Output when OE is low). VCC +5V GND XTAL1 PD1 PD2 PD3 PD4 PD5 PD6 PB7 - PB0 DATA RESET PD7 +12 V BS1 XA0 XA1 OE RDY/BSY PAGEL PA0 WR BS2 AVCC +5V |
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