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PA7540S-15 Datasheet(PDF) 9 Page - Anachip Corp |
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PA7540S-15 Datasheet(HTML) 9 Page - Anachip Corp |
9 / 10 page 9 04-02-051B Figure 15. Sequential Timing – Waveforms and Block Diagram Notes 1. Minimum DC input is -0.5V, however inputs may under-shoot to -2.0V for periods less than 20ns. 2.Test points for Clock and VCC in tR,tF,tCL,tCH, and tRESET are referenced at 10% and 90% levels. 3. I/O pins are 0V or VCC. 4. Test one output at a time for a duration of less than 1 sec. 5. Capacitances are tested on a sample basis. 6. Test conditions assume: signal transition times of 5ns or less from the 10% and 90% points, timing reference levels of 1.5V (unless otherwise specified). 7. tOE is measured from input transition to VREF ±0.1V (See test loads at end of Section 6 for VREF value). tOD is measured from input transition to VOH -0.1V or VOL +0.1V. 8. DIP: “System-clock” refers to pin 1/13 high speed clocks. PLCC: “Sys- tem-clock” refers to pin 2/16 high speed clocks. 9. For T or JK registers in toggle (divide by 2) operation only. 10. For combinatorial and async-clock to LCC output delay. 11. ICC for a typical application: This parameter is tested with the device programmed as a 10-bit D-type counter. 12. Test loads are specified in Section 5 of the Data Book. 13. “Async. Clock” refers to the clock from the Sum term (OR gate). 14. The “LCC” term indicates that the timing parameter is applied to the LCC register. The “LCC/IOC” term indicates that the timing parameter is applied to both the LCC and IOC registers. 16. The term “input” without any reference to another term refers to an (external) input pin. 17. The parameter tSPI indicates that the PCLK signal to the IOC register is always slower than the data from the pin or input by the absolute value of (tSK -tPK -tIA). This means that no set-up time for the data from the pin or input is required, i.e. the external data and clock can be sent to the device simultaneously. Additionally, the data from the pin must remain stable for tHPI time, i.e. to wait for the PCLK signal to arrive at the IOC register. 18. Typical (typ) ICC is measured at TA = 25° C, freq = 25MHZ, VCC = 5V |
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