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HC705JB2GRS/H 数据表(PDF) 123 Page - NXP Semiconductors |
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HC705JB2GRS/H 数据表(HTML) 123 Page - NXP Semiconductors |
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123 / 128 page  August 28, 1998 GENERAL RELEASE SPECIFICATION ELECTRICAL SPECIFICATIONS REV 1.1 13-5 13.6 CONTROL TIMING 1. The minimum period tILIL or tIHIH should not be less than the number of cycles it takes to execute the interrupt service routine plus 19 tCYC. 2. Effects of processing, temperature, and supply voltage (excluding tolerances of external R and C) 3. tslow is a parameter dependent on fOSC and loading. Typical value of tslow is TENTATIVELY set at 170 ns with minimal value of 130ns and maximal value of 185ns under the SIMULATION conditions that fOSC is 6.0 MHz and slow output transition feature is enabled. Capacitive loadings of 50pF on PB1-PB2, are assumed. Actual transition time will be specified to replace the TBDs when enough characterization has been done on various wafers from different lots. The values listed here represent data off simulation runs under the specified conditions. Under no circumstances should they be treated as the final specification. 13.7 EPROM PROGRAMMING SPECIFICATIONS Table 13-6. Control Timing (VDD = 4.2V to 5.5V, VSS = 0 Vdc, TA = 0°C to +70°C, unless otherwise noted) Characteristic Symbol Min Max Units Frequency of Operation Crystal Oscillator Option External Clock Source fOSC fOSC — DC 6 6 MHz MHz Internal Operating Frequency Crystal Oscillator (fOSC ÷ 2) External Clock (fOSC ÷ 2) fOP fOP — DC 3 3 MHz MHz Cycle Time (1/fOP)tCYC 330 — ns RESET Pulse Width Low tRL 1.5 — tCYC IRQ Interrupt Pulse Width Low (Edge-Triggered) tILIH 0.5 — tCYC IRQ Interrupt Pulse Period tILIL note 1 — tCYC PA0 to PA3, Interrupt Pulse Width High (Edge-Triggered) tIHIL 0.5 — tCYC PA0 to PA3, Interrupt Pulse Period tIHIH note 1 — tCYC OSC1 Pulse Width tOH, tOL —— ns Output High to Low Transition Period on PB1 (note 3) tSLOW —— ns Table 13-7. EPROM Programming Electrical Characteristics (VDD = 4.2V to 5.5V, VSS = 0 Vdc, TA = 0°C to +70°C, unless otherwise noted) Characteristic Symbol Min Typ Max Unit Programming Voltage IRQ/VPP VPP 10 12 15 V Programming Current IRQ/VPP IPP —3— mA Programming Time per byte tEPGM 14 — ms Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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