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R7FA6T2AB3CFM Datasheet(PDF) 30 Page - Renesas Technology Corp |
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R7FA6T2AB3CFM Datasheet(HTML) 30 Page - Renesas Technology Corp |
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30 / 101 page  2.3.2 Clock Timing Table 2.16 Clock timing Parameter Symbol Min Typ Max Unit Test conditions EXTAL external clock input cycle time tEXcyc 41.66 — — ns Figure 2.3 EXTAL external clock input high pulse width tEXH 15.83 — — ns EXTAL external clock input low pulse width tEXL 15.83 — — ns EXTAL external clock rise time tEXr — — 5.0 ns EXTAL external clock fall time tEXf — — 5.0 ns Main clock oscillator frequency fMAIN 8 — 24 MHz — Main clock oscillation stabilization wait time (crystal)*1 tMAINOSCWT — — —*1 ms Figure 2.4 LOCO clock oscillation frequency fLOCO 29.4912 32.768 36.0448 kHz — LOCO clock oscillation stabilization wait time tLOCOWT — — 60.4 µs Figure 2.5 ILOCO clock oscillation frequency fILOCO 13.5 15 16.5 kHz — MOCO clock oscillation frequency FMOCO 6.8 8 9.2 MHz — MOCO clock oscillation stabilization wait time tMOCOWT — — 15.0 µs — HOCO clock oscillator oscillation frequency fHOCO16 15.78 16 16.22 MHz –20 ≤ Ta ≤ 105°C fHOCO18 17.75 18 18.25 fHOCO20 19.72 20 20.28 fHOCO16 15.71 16 16.29 –40 ≤ Ta ≤ –20°C fHOCO18 17.68 18 18.32 fHOCO20 19.64 20 20.36 HOCO clock oscillation stabilization wait time*2 tHOCOWT — — 64.7 µs — HOCO period jitter — — ±85 — ps — PLL clock frequency fPLL 120 — 240 MHz — PLL2 clock frequency fPLL2 120 — 240 MHz — PLL/PLL2 clock oscillation stabilization wait time tPLLWT — — 174.9 µs Figure 2.6 PLL/PLL2 period jitter — — ±100 — ps — PLL/PLL2 long term jitter — — ±300 — ps Term: 1µs, 10µs Note 1. When setting up the main clock oscillator, ask the oscillator manufacturer for an oscillation evaluation, and use the results as the recommended oscillation stabilization time. Set the MOSCWTCR register to a value equal to or greater than the recommended value. After changing the setting in the MOSCCR.MOSTP bit to start main clock operation, read the OSCSF.MOSCSF flag to confirm that it is 1, and then start using the main clock oscillator. Note 2. This is the time from release from reset state until the HOCO oscillation frequency (fHOCO) reaches the range for guaranteed operation. RA6T2 Datasheet 2. Electrical Characteristics R01DS0400EJ0150 Rev.1.50 Jul 2, 2025 Page 30 of 101 |
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