| 전자부품 데이터시트 검색엔진 |
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PC912XDP512F0MPVR 데이터시트(PDF) 1267 Page - Freescale Semiconductor, Inc |
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PC912XDP512F0MPVR 데이터시트(HTML) 1267 Page - Freescale Semiconductor, Inc |
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1267 / 1348 page ![]() Appendix A Electrical Characteristics MC9S12XDP512 Data Sheet, Rev. 2.21 Freescale Semiconductor 1269 Table A-22. Oscillator Characteristics Conditions are shown in Table A-4 unless otherwise noted Num C Rating Symbol Min Typ Max Unit 1a C Crystal oscillator range (loop controlled Pierce) fOSC 4.0 — 16 MHz 1b C Crystal oscillator range (full swing Pierce)1, 2 1 Depending on the crystal a damping series resistor might be necessary 2 XCLKS = 0 fOSC 0.5 — 40 MHz 2 P Startup current iOSC 100 — — µA 3 C Oscillator start-up time (loop controlled Pierce) tUPOSC ——3 3 f osc = 4 MHz, C = 22 pF. 504 4 Maximum value is for extreme cases using high Q, low frequency crystals ms 4 D Clock quality check time-out tCQOUT 0.45 2.5 s 5 P Clock monitor failure assert frequency fCMFA 50 100 200 KHz 6 P External square wave input frequency fEXT 0.5 — 80 MHz 7 D External square wave pulse width low tEXTL 5— — ns 8 D External square wave pulse width high tEXTH 5— — ns 9 D External square wave rise time tEXTR —— 1 ns 10 D External square wave fall time tEXTF —— 1 ns 11 D Input capacitance (EXTAL, XTAL inputs) CIN —7— pF 12 P EXTAL pin input high voltage5 5 If full swing Pierce oscillator/external clock circuitry is used. (XCLKS = 0) VIH,EXTAL 0.75* VDDPLL —— V T EXTAL pin input high voltage5 VIH,EXTAL —— VDDPLL + 0.3 V 13 P EXTAL pin input low voltage5 VIL,EXTAL — — 0.25* VDDPLL V T EXTAL pin input low voltage5 VIL,EXTAL VSSPLL – 0.3 —— V 14 C EXTAL pin input hysteresis5 VHYS,EXTAL — 250 — mV |
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