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HCS08 bảng dữ liệu(PDF) 56 Page - NXP Semiconductors |
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HCS08 bảng dữ liệu(HTML) 56 Page - NXP Semiconductors |
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56 / 198 page  Chapter 5 Resets, Interrupts, and General System Control MC9S08QD4 Series MCU Data Sheet, Rev. 6 56 Freescale Semiconductor 5.6 Low-Voltage Detect (LVD) System The MC9S08QD4 series includes a system to protect against low voltage conditions in order to protect memory contents and control MCU system states during supply voltage variations. The system is comprised of a power-on reset (POR) circuit and an LVD circuit with a user selectable trip voltage, either high (VLVDH) or low (VLVDL). The LVD circuit is enabled when LVDE in SPMSC1 is high and the trip voltage is selected by LVDV in SPMSC2. The LVD is disabled upon entering any of the stop modes unless LVDSE is set in SPMSC1. If LVDSE and LVDE are both set, then the MCU cannot enter stop1 or stop2, and the current consumption in stop3 with the LVD enabled will be greater. Table 5-2. Vector Summary Vector Priority Vector Number Address (High:Low) Vector Name Module Source Enable Description Lower Higher 31 through 24 0xFFC0:FFC1 through 0xFFCE:FFCF Unused Vector Space (available for user program) 23 0xFFD0:FFD1 Vrti System control RTIF RTIE Real-time interrupt 22 0xFFD2:FFD3 — — — — — 21 0xFFD4:FFD5 — — — — — 20 0xFFD6:FFD7 — — — — — 19 0xFFD8:FFD9 Vadc1 ADC1 COCO AIEN ADC1 18 0xFFDA:FFDB Vkeyboard1 KBI1 KBF KBIE Keyboard pins 17 0xFFDC:FFDD — — — — — 16 0xFFDE:FFDF — — — — — 15 0xFFE0:FFE1 — — — — — 14 0xFFE2:FFE3 — — — — — 13 0xFFE4:FFE5 — — — — — 12 0xFFE6:FFE7 — — — — — 11 0xFFE8:FFE9 — — — — — 10 0xFFEA:FFEB Vtpm2ovf TPM2 TOF TOIE TPM2 overflow 9 0xFFEC:FFED — — — — — 8 0xFFEE:FFEF Vtpm2ch0 TPM2 CH0F CH0IE TPM2 channel 0 7 0xFFF0:FFF1 Vtpm1ovf TPM1 TOF TOIE TPM1 overflow 6 0xFFF2:FFF3 Vtpm1ch1 TPM1 CH1F CH1IE TPM1 channel 1 5 0xFFF4:FFF5 Vtpm1ch0 TPM1 CH0F CH0IE TPM1 channel 0 4 0xFFF6:FFF7 — — — — — 3 0xFFF8:FFF9 Virq IRQ IRRQF IRQIE IRQ pin 2 0xFFFA:FFFB Vlvd System control LVDF LVDIE Low voltage detect 1 0xFFFC:FFFD Vswi CPU SWI Instruction — Software interrupt 0 0xFFFE:FFFF Vreset System control COP LVD RESET pin Illegal opcode Illegal address POR COPE LVDRE RSTPE — — — Watchdog timer Low-voltage detect External pin Illegal opcode Illegal address power-on-reset |
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