THỜI GIAN ĐIỀU KIỆN Nhiệt độ và điện áp quy định trong Bảng 22-3 áp dụng cho tất cả các chi tiết kỹ thuật thời gian, trừ khi có ghi chú khác. Hình 22-4 quy định cụ thể các điều kiện tải cho các chi tiết kỹ thuật thời gian. | PIC18FXX2 TIMING CONDITIONS The temperature and voltages specified in Table 22-3 apply to all timing specifications unless otherwise noted. Figure 22-4 specifies the load conditions for the timing specifications. TABLE 22-3 TEMPERATURE AND VOLTAGE SPECIFICATIONS - AC Standard Operating Conditions unless otherwise stated Operating temperature -40 C Ta 85 C for industrial AC CHARACTER ST CS -40 C. Ta 125_ C for extended Operating voltage VDD range as described in DC spec Section and Section . LC parts operate for industrial temperatures only. FIGURE 22-4 LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS Load condition 2 Load condition 1 Cl Pin Vss Rl 464Q Cl 50 pF for all pins except OSC2 CLKO and including D and E outputs as ports DS39564C-page 270 2006 Microchip Technology Inc. PIC18FXX2 TIMING DIAGRAMS AND SPECIFICATIONS TABLE 22-4 EXTERNAL CLOCK TIMING REQUIREMENTS Param. No. Symbol Characteristic Min Max Units Conditions 1A Fosc External CLKI Frequency 1 DC 40 MHz EC ECIO -40 C to 85 C Oscillator Frequency 1 DC 25 MHz EC ECIO 85 C to 125 C DC 4 MHz RC osc 4 MHz XT osc 4 25 MHz HS osc 4 10 MHz HS PLL osc -40 C to 85 C 4 MHz HS PLL osc 85 C to 125 C 5 200 kHz LP Osc mode 1 Tosc External CLKI Period 1 25 ns EC ECIO -40 C to 85 C Oscillator Period 1 40 ns EC ECIO 85 C to 125 C 250 ns RC osc 250 10 000 ns XT osc 40 250 ns HS osc 100 250 ns HS PLL osc -40 C to 85 C 160 250 ns HS PLL osc 85 C to 125 C 25 ps LP osc 2 Tcy Instruction Cycle Time 1 100 ns Tcy 4 Fosc -40 C to 85 C 160 ns Tcy 4 FOSC 85 C to 125 C 3 TosL External Clock in OSC1 30 ns XT osc TosH High or Low Time ps LP osc 10 ns HS osc 4 TosR External Clock in OSC1 20 ns XT osc TosF Rise or Fall Time 50 ns LP osc ns HS osc Note 1 Instruction cycle period Tcy equals four times the input oscillator time-base period for all configurations except PLL. All specified values are based on characterization data for that particular oscillator type under standard operating conditions
