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28 Electrical Data Chapter 6

AMD Duron™ Processor Data Sheet 23802E—September 2000

Preliminary Information

6.14 APIC Pins AC and DC Characteristics

Table 15 shows the AC and DC characteristics of the

AMD Duron processor APIC pins.

BIT

Input Time to Acquire 20.0 nS 8,9

RPT

Input Time to Reacquire 40.0 nS 10–14

RISE

Signal Rise Time 1.0 3.0 V/nS 7

FALL

Signal Fall Time 1.0 3.0 V/nS 7

Pin Capacitance 4 12 pF

Table 14. General AC and DC Characteristics* (continued)

Symbol Parameter Description Condition Min Max Units Notes

Notes:

* These parameters were not characterized at VCC_CORE

SLEEP

1. Characterized across DC supply voltage range.

2. Values specified at nominal VCC_CORE. Scale parameters between VCC_CORE Min and VCC_CORE Max.

3. Hysteresis values refer to the difference between initial and return switching points.

4. I

and I

are measured at V

max and V

min, respectively.

5. Synchronous inputs/outputs are specified with respect to RSTCLK and RSTCK# at the pins.

6. These are aggregate numbers.

7. Edge rates indicate the range over which inputs were characterized.

8. In asynchronous operation, the signal must persist for this time to guarantee capture.

9. This value assumes RSTCLK frequency is 10ns ==> TBIT = 2*fRST.

10. The approximate value for standard case in normal mode operation.

11. This value is dependent on RSTCLK frequency, divisors, LowPower mode, and core frequency.

12. Reassertions of the signal within this time are not guaranteed to be seen by the core.

13. This value assumes that the skew between RSTCLK and K7CLKOUT is much less than one phase.

14. This value assumes RSTCLK and K7CLKOUT are running at the same frequency, though the processor is capable of other

configurations.

Table 15. APIC Pins AC and DC Characteristics

Symbol Parameter Description Condition Min Max Units Notes

Input High Voltage 1.7 2.625 V 1, 3

Input Low Voltage –300 700 mV 1, 2

Output High Voltage 2.625 V 3

Notes:

1. Characterized across DC supply voltage range

2. Values specified at nominal VDD (1.5 V). Scale parameters with VDD

3. 2.625 V = 2.5 V + 5% maximum

4. Edge rates indicate the range over which inputs were characterized

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 83 84

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