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MC9S08JS16CFK Datasheet(PDF) 17 Page - Freescale Semiconductor, Inc |
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MC9S08JS16CFK Datasheet(HTML) 17 Page - Freescale Semiconductor, Inc |
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17 / 32 page  Electrical Characteristics MC9S08JS16 Series MCU Data Sheet, Rev. 4 Freescale Semiconductor 17 3.7 External Oscillator (XOSC) Characteristics Table 8. Oscillator Electrical Specifications (Temperature Range = –40 to 85 °C Ambient) Num C Rating Symbol Min Typ1 1 Typical data was characterized at 3.0 V, 25 °C or is recommended value. Max Unit 1C Oscillator crystal or resonator (EREFS = 1, ERCLKEN = 1) Low range (RANGE = 0) High range (RANGE = 1) FEE or FBE mode2 High range (RANGE = 1) PEE or PBE mode3 High range (RANGE = 1, HGO = 1) BLPE mode High range (RANGE = 1, HGO = 0) BLPE mode 2 When MCG is configured for FEE or FBE mode, input clock source must be divided using RDIV to within the range of 31.25 kHz to 39.0625 kHz. 3 When MCG is configured for PEE or PBE mode, input clock source must be divided using RDIV to within the range of 1 MHz to 2 MHz. flo fhi-fll fhi-pll fhi-hgo fhi-lp 32 1 1 1 1 — — — — — 38.4 5 16 16 8 kHz MHz MHz MHz MHz 2 — Load capacitors C1, C2 See crystal or resonator manufacturer’s recommendation. 3— Feedback resistor Low range (32 kHz to 38.4 kHz) High range (1 MHz to 16 MHz) RF — — 10 1 — — M Ω 4— Series resistor Low range, low gain (RANGE = 0, HGO = 0) Low range, high gain (RANGE = 0, HGO = 1) High range, low gain (RANGE = 1, HGO = 0) High range, high gain (RANGE = 1, HGO = 1) ≥ 8 MHz 4 MHz 1 MHz RS — — — — — — 0 100 0 0 0 0 — — — 0 10 20 k Ω 5T Crystal start-up time4 Low range, low gain (RANGE = 0, HGO = 0) Low range, high gain (RANGE = 0, HGO = 1) High range, low gain (RANGE = 1, HGO = 0)5 High range, high gain (RANGE = 1, HGO = 1)5 4 This parameter is characterized and not tested on each device. Proper PC board layout procedures must be followed to achieve specifications. 5 4 MHz crystal. t CSTL-LP t CSTL-HGO t CSTH-LP t CSTH-HGO — — — — 200 400 5 15 — — — — ms 6T Square wave input clock frequency (EREFS = 0, ERCLKEN = 1) FEE or FBE mode2 PEE or PBE mode3 BLPE mode fextal 0.03125 1 0 — — — 5 16 40 MHz MCU EXTAL XTAL Crystal or Resonator RS C2 RF C1 |
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