參數(shù)資料
型號: μPD23C32000A
廠商: NEC Corp.
英文描述: 32M-Bit Mask-Programmable ROM(32M位掩膜可選ROM)
中文描述: 32兆位掩??删幊蘎OM(32M的位掩膜可選光盤)
文件頁數(shù): 10/20頁
文件大小: 155K
代理商: ΜPD23C32000A
μ
PD23C32000A
10
Read Cycle Timing Chart
A0 to A20,
A–1
Note 1
(Input)
O0 to O7,
Note 3
O8 to O15
(Output)
CE
(Input)
OE/OE
(Input)
t
ACC
t
CE
t
OE
t
DF
Note 2
t
OH
Data Out
High impedance
Notes 1.
During WORD mode, A–1 is O15.
t
DF
is specified when the one of CE, OE or OE is inactivated.
During BYTE mode, O8 to O14 are high impedance and O15 is A–1.
2.
3.
WORD/BYTE Switch Timing Chart
Data Out
A–1
(Input)
WORD/BYTE (Input)
High impedance
High impedance
Data Out
Data Out
High impedance
O0 to O7
(Output)
O8 to O15
(Output)
t
OH
t
ACC
t
OH
t
WB
Data Out
Data Out
t
DF
Remark
OE/OE, CE: Active.
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