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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATMEGA16 датащи(PDF) 25 Page - ATMEL Corporation |
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ATMEGA16 датащи(HTML) 25 Page - ATMEL Corporation |
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25 / 315 page  25 ATmega16(L) 2466E–AVR–10/02 The CKSEL0 Fuse together with the SUT1..0 fuses select the start-up times as shown in Table 5. Notes: 1. These options should only be used when not operating close to the maximum fre- quency of the device, and only if frequency stability at start-up is not important for the application. These options are not suitable for crystals. 2. These options are intended for use with ceramic resonators and will ensure fre- quency stability at start-up. They can also be used with crystals when not operating close to the maximum frequency of the device, and if frequency stability at start-up is not important for the application. Table 5. Start-up Times for the Crystal Oscillator Clock Selection CKSEL0 SUT1..0 Start-up Time from Power-down and Power-save Additional Delay from Reset (VCC = 5.0V) Recommended Usage 000 258 CK (1) 4.1 ms Ceramic resonator, fast rising power 001 258 CK (1) 65 ms Ceramic resonator, slowly rising power 010 1K CK (2) – Ceramic resonator, BOD enabled 011 1K CK (2) 4.1 ms Ceramic resonator, fast rising power 100 1K CK (2) 65 ms Ceramic resonator, slowly rising power 1 01 16K CK – Crystal Oscillator, BOD enabled 1 10 16K CK 4.1 ms Crystal Oscillator, fast rising power 1 11 16K CK 65 ms Crystal Oscillator, slowly rising power |
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