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HM62256A Datasheet(PDF) 4 Page - Hitachi Semiconductor

Part No. HM62256A
Description  32,768-word x 8-bit High Speed CMOS Static RAM
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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 4 page
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Function Table
WE
CS
OE
Mode
VCC current
I/O pin
Ref. cycle
———————————————————————————————————————————————–
X
H
X
Not selected
ISB, ISB1
High-Z
———————————————————————————————————————————————–
H
L
H
Output disable
ICC
High-Z
———————————————————————————————————————————————–
H
L
L
Read
ICC
Dout
Read cycle (1)–(3)
———————————————————————————————————————————————–
L
L
H
Write
ICC
Din
Write cycle (1)
———————————————————————————————————————————————–
LLLWrite
ICC
Din
Write cycle (2)
———————————————————————————————————————————————–
Note:
X: H or L
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
———————————————————————————————————————————————–
Voltage on any pin relative to VSS
VT
–0.5*1 to +7.0
V
———————————————————————————————————————————————–
Power dissipation
PT
1.0
W
———————————————————————————————————————————————–
Operating temperature
Topr
0 to +70
°C
———————————————————————————————————————————————–
Storage temperature
Tstg
–55 to +125
°C
———————————————————————————————————————————————–
Storage temperature under bias
Tbias
–10 to +85
°C
———————————————————————————————————————————————–
Note:
1. VT min = –3.0 V for pulse half-width ≤ 50 ns
Recommended DC Operating Conditions (Ta = 0 to +70°C)
Parameter
Symbol
Min
Typ
Max
Unit
———————————————————————————————————————————————–
Supply voltage
VCC
4.5
5.0
5.5
V
———————————————————————————————–
VSS
000V
———————————————————————————————————————————————–
Input high (logic 1) voltage
VIH
2.2
6.0
V
———————————————————————————————————————————————–
Input low (logic 0) voltage
VIL
–0.5*1
0.8
V
———————————————————————————————————————————————–
Note:
1. VIL min = –3.0 V for pulse half-width ≤ 50 ns
4
HM62256A Series
HM62256A Series




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