MCM69L820AZP8.5R 데이터 시트보기 (PDF) - Motorola => Freescale

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MCM69L820AZP8.5R

4M Late Write 2.5 V I/O

Motorola => Freescale 

DEVICE

UNDER

TEST

VDDQ/2

50 Ω

50 Ω

TIMING LIMITS

The table of timing values shows either a mini-

mum or a maximum limit for each parameter. Input

requirements are specified from the external system

point of view. Thus, address setup time is shown as

a minimum since the system must supply at least

that much time. 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 provides 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

MCM69L738A•MCM69L820A

8

MOTOROLA FAST SRAM

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