MCM69R819AZP6 Просмотр технического описания (PDF) - Motorola => Freescale

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MCM69R819AZP6

4M Late Write LVTTL

Motorola => Freescale 

DEVICE

UNDER

TEST

VDDQ/2

50 Ω

50 Ω

TIMING LIMITS

The table of timing values shows either a

minimum or a maximum limit for each param-

eter. Input requirements are specified from

the external system point of view. Thus, ad-

dress setup time is shown as a minimum

since the system must supply at least that

much time (even though most devices do not

require it). On the other hand, responses from

the memory are specified from the device

point of view. Thus, the access time is shown

as a maximum since the device never pro-

vides data later than that time.

Figure 1. AC Test Load

VOH

VSS

50%

100%

20% tKHKH

Figure 2. Undershoot Voltage

VDDQ

VTR

VDIF

CROSSING POINT

VCP

VCM*

VSS

*VCM, the Common Mode Input Voltage, equals VTR – ((VTR – VCP)/2).

Figure 3. Differential Inputs/Common Mode Input Voltage

MCM69R737A•MCM69R819A

8

MOTOROLA FAST SRAM

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