GXM datasheet(186/244 Pages) NSC

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Revision 3.1

Electrical Specifications (Continued)

7.6

AC CHARACTERISTICS

The following tables list the AC characteristics including

output delays, input setup requirements, input hold

requirements and output float delays. The rising-clock-

edge reference level VREF, and other reference levels are

shown in Table 7-6.

Input or output signals must cross

these levels during testing.

Input setup and hold times are specified minimums that

define the smallest acceptable sampling window for which

a synchronous input signal must be stable for correct oper-

ation.

All AC tests are at VCC2 = 2.75V to 3.05V (2.9V nominal),

TC =0

oCto 70oCor85o,C

L = 50 pF unless otherwise

specified.

Figure 7-1. Drive Level and Measurement Points for Switching Characteristics

Table 7-6. Drive Level and Measurement Points

for Switching Characteristics

Symbol

Voltage (V)

VREF

1.5

VIHD

2.4

VILD

0.4

CLK

OUTPUTS

INPUTS

VIHD

VILD

VREF

Valid Input

Valid Output n+1

Valid Output n

VREF

VILD

VIHD

Min

Max

Legend: A = Maximum Output Delay Specification

B = Minimum Output Delay Specification

C = Minimum Input Setup Specification

D = Minimum Input Hold Specification

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