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HN27C4000G Datasheet(PDF) 3 Page - Hitachi Semiconductor

Part No. HN27C4000G
Description  524288-Word ®8-Bit/262144-Word X 16-Bit CMOS UV Erasable and Programmable ROM
Download  20 Pages
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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HN27C4000G Datasheet(HTML) 3 Page - Hitachi Semiconductor

 
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background image
Block Diagram
Mode Selection
Pin
CE
OE
A9
BYTE/VPP VCC
I/O0 – I/O7, I/O8 – I/O14, I/O15/A-1
Mode
DG-40A
(10)
(12)
(39)
(31)
(21)
(13 – 20,
22 – 28,
29)
Read (X16 bit)
VIL
VIL
XVIH
VCC
Dout
Dout
Dout
Read (X8 bit)
VIL
VIL
XVIL
VCC
Dout
High-Z
VIH/VIL
Output disable (X16 bit)
VIL
VIH
XVIH
VCC
High-Z
High-Z
High-Z
Output disable (X8 bit)
VIL
VIH
XVIL
VCC
High-Z
High-Z
VIH/VIL
3
HN27C4000G Series
I/O0
:
:
:
I/O15
X-
Decoder
2,048 x 2,048
Memory Matrix
Y-Decoder
CE
OE
Input
Data
Control
Y-Gating
VCC
V
VSS
H
A0
A6
H
: High threshold inverter
A7
:
:
:
:
:
:
:
:
:
:
:
:
A17
PP
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