r8a66120ffa Renesas Electronics Corporation., r8a66120ffa Datasheet - Page 8

• Manufacturer Part Number: r8a66120ffa
• Description: 4m-bit X 2 Multiple Field Memory
• Manufacturer: Renesas Electronics Corporation.

Operating Timing
REJ03F0161-0170 Rev.1.70 May.16.2008
R8A66120FFA
Write Cycle
Write Reset Cycle
Write Reset and Write Enable Combination Cycle
page 8 of 14
WRES
WRES
WE
CK
Dn
WE
CK
Dn
CK
Dn
Note: There is no timing restriction of WE to WRES.
t
n
CK
n cycle
t
CK
cycle
n-1
t
CK
t
t
cycle
DS
DS
(n)
(n)
t
t
t
DS
(n-1)
t
DH
DH
t
CKH
CKH
n+1
n+1 cycle
t
t
WRESH
DH
cycle
t
n
t
CKL
CKL
cycle
(n+1)
(n+1)
t
WRESS
t
DS
t
(n)
t
WEH
n+2
WEH
n+2 cycle
t
DH
cycle
t
t
WES
WES
t
t
(n+2)
DS
DS
(n+2)
t
t
WRESH
t
DH
DH
Reset cycle
t
WRESS
Disable cycle
t
t
WRESH
WEH
Disable cycle
t
WRESH
t
WRESS
t
WES
t
WRESS
t
n+3
WEH
cycle
0
t
cycle
WES
(n+3)
In case of WRES = “H”
In case of WE = “L”
n+4
(0)
0 cycle
cycle
1
cycle
(n+4)
(0)
(1)
1 cycle
(1)