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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC5604B датащи(PDF) 38 Page - Freescale Semiconductor, Inc |
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MPC5604B датащи(HTML) 38 Page - Freescale Semiconductor, Inc |
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38 / 72 page  MPC5604B/C Microcontroller Data Sheet Data Sheet, Rev. 4 Electrical characteristics Freescale Semiconductor 38 Figure 14. Slow external crystal oscillator (32 kHz) electrical characteristics Table 33. Crystal motional characteristics1 1 The crystal used is Epson Toyocom MC306. Symbol Parameter Conditions Value Unit Min Typ Max Lm Motional inductance — — 11.796 — KH Cm Motional capacitance — — 2 — fF C1/C2 Load capacitance at OSC32K_XTAL and OSC32K_EXTAL with respect to ground2 2 This is the recommended range of load capacitance at OSC32K_XTAL and OSC32K_EXTAL with respect to ground. It includes all the parasitics due to board traces, crystal and package. — 18 — 28 pF Rm 3 3 Maximum ESR (R m) of the crystal is 50 kΩ Motional resistance AC coupled @ C0 = 2.85 pF4 4 C0 Includes a parasitic capacitance of 2.0 pF between OSC32K_XTAL and OSC32K_EXTAL pins — — 65 kW AC coupled @ C0 = 4.9 pF(4) — — 50 AC coupled @ C0 = 7.0 pF(4) — — 35 AC coupled @ C0 = 9.0 pF(4) — — 30 OSCON bit (OSC_CTL register) TSXOSCSU 1 VOSC32K_XTAL VSXOSC valid internal clock 90% 10% 1/fSXOSC 0 |
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