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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ATmega32HVB 데이터시트(PDF) 238 Page - ATMEL Corporation |
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ATmega32HVB 데이터시트(HTML) 238 Page - ATMEL Corporation |
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238 / 273 page  238 8042A–AVR–07/09 ATmega16HVB/32HVB Figure 32-4. Serial Programming Waveforms Note: 1. 2.2 t CLCL for fck < 12 MHz, 3 tCLCL for fck >= 12 MHz 32.16 Parallel Programming Characteristics Figure 32-5. Parallel Programming Timing, Including some General Timing Requirements MSB MSB LSB LSB SERIAL CLOCK INPUT (SCK) SERIAL DATA INPUT (MOSI) (MISO) SAMPLE SERIAL DATA OUTPUT Table 32-17. Serial Programming Characteristics, T A = -40°C to 85°C, VCC = 3.3V (Unless Otherwise Noted) Symbol Parameter Min Typ Max Units 1/tCLCL Oscillator Frequency (ATmega16HVB/32HVB) 0 8 MHz tCLCL Oscillator Period (ATmega16HVB/32HVB) 125 ns tSHSL SCK Pulse Width High 2.2 tCLCL (1) tSLSH SCK Pulse Width Low 2.2 tCLCL (1) tOVSH MOSI Setup to SCK High tCLCL tSHOX MOSI Hold after SCK High 2 tCLCL tSLIV SCK Low to MISO Valid 15 Data & Contol (DATA, XA0/1, BS1, BS2) XTAL1 t XHXL t WLWH t DVXH t XLDX t PLWL t WLRH WR RDY/BSY PAGEL t PHPL t PLBX t BVPH t XLWL t WLBX t BVWL WLRL |
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