參數資料
型號: μPD23C16040A
廠商: NEC Corp.
英文描述: 16M-Bit Mask-Programmable ROM(16M 掩膜可編程ROM)
中文描述: 1,600位掩模可編程ROM(1,600掩膜可編程光盤)
文件頁數: 11/24頁
文件大?。?/td> 180K
代理商: ΜPD23C16040A
μ
PD23C16040A
11
Read Cycle Timing Chart 2 (Page Access Mode)
A2 to A19
(Input)
CE
(Input)
OE/OE
(Input)
t
ACC
Data Out
t
CE
t
OE
t
PAC
Note 4
t
PAC
Note 4
O0 to O7,
Note 3
O8 to O15
A–1,
Note 1
A0, A1
(Input)
(Output)
Data Out
Data Out
High impedance
High
impedance
t
OH
t
OH
t
OH
t
DF
Note 2
Notes 1.
During WORD mode A–1 is O15.
t
DF
is specified when one of CE, OE/OE is inactivated.
During BYTE mode, O8 to O14 are high impedance and O15 is A–1.
The definition of page access time is as follows.
2.
3.
4.
Page access time
Upper address (A2 to A19)
inputs condition
CE input condition
OE/OE input condition
t
PAC
Before t
ACC
– t
PAC
Before t
CE
– t
PAC
Before stabilizing of page
address (A–1, A0, A1)
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