參數(shù)資料
型號(hào)： UPD46128512F9-CR2
廠商： NEC Corp.
英文描述： 128M-BIT CMOS MOBILE SPECIFIED RAM 8M-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION
中文描述： 128兆位CMOS移動(dòng)指明內(nèi)存800萬字由16位溫度范圍
文件頁數(shù)： 20/82頁
文件大小： 817K
代理商： UPD46128512F9-CR2
Preliminary Data Sheet M17507EJ2V0DS
20
μ
PD46128512-X
4.8 Burst Read Termination
Burst read termination can be performed by transferring /CE1 LOW to HIGH during the burst read. When continuous
burst length is set, burst read is endless unless it is terminated. Be sure to terminate a burst read after outputting the first
read access data.
In order to guarantee the last data output, the specified minimum value of /CE1 = LOW hold time (t
CEH
) against clock
edge must be satisfied. In order to perform next operation after burst read termination, the specified minimum value of
Burst Read Termination recovery time (t
TRB
) must be satisfied.
Figure 4-5. Burst Read Termination
CLK (Input)
/ADV (Input)
/OE (Input)
A0 to A22 (Input)
/CE1 (Input)
DQ0 to DQ15 (Output)
Valid
t
ACS
t
ACH
t
CHV
t
CSV
t
CHV
t
AH
t
CEH
t
CES
t
TRB
t
CEH
t
CES
t
CHZ
High-Z
Q2
Q1
Q3
t
BDH
t
BACC
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