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ATtiny261-ESMZ 데이터시트(PDF) 196 Page - ATMEL Corporation |
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ATtiny261-ESMZ 데이터시트(HTML) 196 Page - ATMEL Corporation |
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196 / 227 page ![]() 196 7753C–AVR–07/09 ATtiny261/ATtiny461/ATtiny861 23.8 Serial Programming Characteristics Figure 23-6. Serial Programming Waveforms Figure 23-7. Serial Programming Timing Note: 1. 2 t CLCL for fck < 12 MHz, 3 tCLCL for fck >= 12 MHz Table 23-8. Serial Programming Characteristics, T A = -40°C to 125°C, VCC = 2.7 - 5.5V (Unless Otherwise Noted) Symbol Parameter Min Typ Max Units 1/tCLCL Oscillator Frequency (ATtiny261/461/861V) 0 4 MHz tCLCL Oscillator Period (ATtiny261/461/861V) 250 ns 1/tCLCL Oscillator Frequency (ATtiny261/461/861L, VCC = 2.7 - 5.5V) 010 MHz tCLCL Oscillator Period (ATtiny261/461/861L, VCC = 2.7 - 5.5V) 100 ns 1/tCLCL Oscillator Frequency (ATtiny261/461/861, VCC = 4.5V - 5.5V) 016 MHz tCLCL Oscillator Period (ATtiny261/461/861, VCC = 4.5V - 5.5V) 50 ns tSHSL SCK Pulse Width High 2 tCLCL* ns tSLSH SCK Pulse Width Low 2 tCLCL* ns tOVSH MOSI Setup to SCK High tCLCL ns tSHOX MOSI Hold after SCK High 2 tCLCL ns tSLIV SCK Low to MISO Valid TBD TBD TBD ns MSB MSB LSB LSB SERIAL CLOCK INPUT (SCK) SERIAL DATA INPUT (MOSI) (MISO) SAMPLE SERIAL DATA OUTPUT MOSI MISO SCK t OVSH t SHSL t SLSH t SHOX t SLIV |
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