Datasheet

ATmega48A/PA/88A/PA/168A/PA/328/P
 2018 Microchip Technology Inc. Data Sheet Complete DS40002061A-page 307
28.8.4 SPI Serial Programming Characteristics
Figure 28-9. Serial Programming Waveforms
For characteristics of the SPI module see “SPI Timing Characteristics” on page 315.
MSB
MSB
LSB
LSB
SERIAL CLOCK INPUT
(SCK)
SERIAL DATA INPUT
(MOSI)
(MISO)
SAMPLE
SERIAL DATA OUTPUT