參數(shù)資料
型號(hào): μPD23C24020
廠商: NEC Corp.
英文描述: 24M-Bit Mask Programmable ROM(24M位掩膜可選ROM)
中文描述: 24M服務(wù)位掩模可編程ROM(24米位掩膜可選光盤)
文件頁數(shù): 5/12頁
文件大?。?/td> 72K
代理商: ΜPD23C24020
5
μ
PD23C24020
Mask Option
The active levels of output enable pin (/OE, OE, DC) are mask programmable and optional, and can be selected
from among "0" "1" "
×
" shown in the table below.
Option
/OE, OE, DC
OE active level
0
/OE
L
1
OE
H
×
DC
Don’t care
Operation modes for each option are shown in the tables below.
Operation mode (Option : 0)
/CE
/OE
Mode
Output state
L
L
Active
Data out
H
High impedance
H
H or L
Standby
High impedance
Operation mode (Option : 1)
/CE
OE
Mode
Output state
L
L
Active
High impedance
H
Data out
H
H or L
Standby
High impedance
Operation mode (Option :
×
)
/CE
DC
Mode
Output state
L
H or L
Active
Data out
H
H or L
Standby
High impedance
Remark
L : Low level input
H : High level input
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