M66281FP Ver la hoja de datos (PDF) - Renesas Electronics
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M66281FP Datasheet PDF : 16 Pages
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M66281FP
Switching Characteristics
Access time
Output hold time
Output enable time
Output disable time
Item
(Ta = 0 to 70°C, VCC = 2.7 to 3.6 V, GND = 0 V, unless otherwise noted)
Symbol
Min
Typ
Max
Unit
tAC


18
ns
tOH
3


ns
tOEN
3

18
ns
tODIS
3

18
ns
Timing Requirements
(Ta = 0 to 70°C, VCC = 2.7 to 3.6 V, GND = 0 V, unless otherwise noted)
Item
Symbol
Min
Typ
Max
Unit
Write clock (WCK) cycle
Write clock (WCK) "H" pulse width
tWCK
25


ns
tWCKH
11


ns
Write clock (WCK) "L" pulse width
Read clock (RCK) cycle
tWCKL
11


ns
tRCK
25


ns
Read clock (RCK) "H" pulse width
Read clock (RCK) "L" pulse width
tRCKH
11


ns
tRCKL
11


ns
Input data setup time for WCK
Input data hold time for WCK
tDS
7


ns
tDH
3


ns
Reset setup time for WCK/RCK
Reset hold time for WCK/RCK
tRESS
7


ns
tRESH
3


ns
Reset non-selection setup time for WCK/RCK
tNRESS
7


ns
Reset non-selection hold time for WCK/RCK
tNRESH
3


ns
WEB setup time for WCK
WEB hold time for WCK
tWES
tWEH
7


ns
3


ns
WEB non-selection setup time for WCK
tNWES
7


ns
WEB non-selection hold time for WCK
tNWEH
3


ns
REB setup time for RCK
REB hold time for RCK
tRES
7


ns
tREH
3


ns
REB non-selection setup time for RCK
tNRES
7


ns
REB non-selection hold time for RCK
tNREH
3


ns
Input pulse up/down time
tr, tf


20
ns
Data hold time*
tH


20
ms
Notes: Perform reset operation after turning on power supply.
* For 1 line access, the following conditions must be satisfied:
WEB high-level period ≤ 20 ms − 5120 • tWCK − WRESB low-level period
REB high-level period ≤ 20 ms − 5120 • tRCK − RRESB low-level period
REJ03F0254-0200 Rev.2.00 Sep 14, 2007
Page 5 of 15
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