參數(shù)資料
型號: MCM69R819AZP6R
廠商: MOTOROLA INC
元件分類: DRAM
英文描述: 4M Late Write LVTTL
中文描述: 256K X 18 LATE-WRITE SRAM, 3 ns, PBGA119
封裝: 14 X 22 MM, 1.27 MM PITCH, PLASTIC, BGA-119
文件頁數(shù): 8/20頁
文件大?。?/td> 212K
代理商: MCM69R819AZP6R
MCM69R737A
MCM69R819A
8
MOTOROLA FAST SRAM
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.
TIMING LIMITS
DEVICE
UNDER
TEST
50
50
VDDQ/2
Figure 1. AC Test Load
VOH
VSS
50%
100%
20% tKHKH
Figure 2. Undershoot Voltage
CROSSING POINT
VDDQ
VSS
VTR
VDIF
VCP
VCM*
Figure 3. Differential Inputs/Common Mode Input Voltage
*VCM, the Common Mode Input Voltage, equals VTR – ((VTR – VCP)/2).
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