M66258FP 查看數據表（PDF） - MITSUBISHI ELECTRIC
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M66258FP Datasheet PDF : 12 Pages
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MITSUBISHI <DIGITAL ASSP>
M66258FP
8192 x 8-BIT LINE MEMORY
SWITCHING CHARACTERISTICS (Ta=0 – 70 °C, Vcc=5V±10%, GND=0V unless otherwise noted)
Symbol
tAC
tOH
tOEN
tODIS
Access time
Output hold time
Output enable time
Output disable time
Parameter
Limits
Min. Typ. Max. Unit
16
ns
3
ns
3
16
ns
3
16
ns
TIMING REQUIREMENTS (Ta=0 – 70 °C, Vcc=5V±10%, GND=0V unless otherwise noted)
Symbol
tWCK
tWCKH
tWCKL
tRCK
tRCKH
tRCKL
tDS
tDH
tRESS
tRESH
tNRESS
tNRESH
tWES
tWEH
tNWES
tNWEH
tRES
tREH
tNRES
tNREH
tr, tf
tH
Parameter
Write clock (WCK) cycle
Write clock (WCK) "H" pulse width
Write clock (WCK) "L" pulse width
Read clock (RCK) cycle
Read clock (RCK) "H" pulse width
Read clock (RCK) "L" pulse width
Input data set up time for WCK
Input data hold time for WCK
Reset set up time for WCK/RCK
Reset hold time for WCK/RCK
Reset non-selection set up time for WCK/RCK
Reset non-selection hold time for WCK/RCK
WE set up time for WCK
WE hold time for WCK
WE non-selection set up time for WCK
WE non-selection hold time for WCK
RE set up time for RCK
RE hold time for RCK
RE non-selection set up time for RCK
RE non-selection hold time for RCK
Input pulse up/down time
Data hold time (Note 1)
Limits
Min. Typ. Max. Unit
20
ns
8
ns
8
ns
20
ns
8
ns
8
ns
4
ns
3
ns
4
ns
3
ns
4
ns
3
ns
4
ns
3
ns
4
ns
3
ns
4
ns
3
ns
4
ns
3
ns
20
ns
20
ms
Note 1: For 1 line access, the following conditions must be satisfied:
WE high-level period ≤ 20 ms - 8192 • tWCK - WRES low-level period
RE high-level period ≤ 20 ms - 8192 • tRCK - RRES low-level period
2: Perform reset operation after turning on power supply.
4
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