Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller TQFP 44 (10x10) 8-Bit 16 MHz I/O number 26

363

7766E–AVR–04/10

ATmega16U4/ATmega32U4

Figure 28-11. Serial Programming Waveforms

MSB

MSB

LSB

LSB

SERIAL CLOCK INPUT

(SCK)

SERIAL DATA INPUT

(MOSI)

(MISO)

SAMPLE

SERIAL DATA OUTPUT