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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega32HVB датащи(PDF) 236 Page - ATMEL Corporation |
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ATmega32HVB датащи(HTML) 236 Page - ATMEL Corporation |
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236 / 273 page  236 8042A–AVR–07/09 ATmega16HVB/32HVB Figure 32-1. Two-wire Serial Bus Timing 32.14 SPI Timing Characteristics See Figure 32-2 on page 237 and Figure on page 237 for details. Note: 1. Refer to ”Serial Programming” on page 211 for serial programming requirements. tSU;STA tLOW tHIGH tLOW tof tHD;STA tHD;DAT tSU;DAT tSU;STO tBUF SCL SDA tr Table 32-16. SPI Timing Parameters Description Mode Min Typ Max Units 1 SCK period Master See Figure ns 2 SCK high/low Master 50% duty 3 Rise/Fall time Master 3.6 4 Setup Master 10 5 Hold Master 10 6 Out to SCK Master 0.5 • tsck 7 SCK to out Master 10 8 SCK to out high Master 10 9SS low to out Slave 15 10 SCK period Slave 4 • tck + 40 ns 11 SCK high/low(1) Slave 2 • tck + 20 ns 12 Rise/Fall time Slave 1.6 µs 13 Setup Slave 10 ns 14 Hold Slave tck 15 SCK to out Slave 15 16 SCK to SS high Slave 20 17 SS high to tri-state Slave 10 18 SS low to SCK Slave 20 |
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