DS1244Y-120 DALLAS [Dallas Semiconductor], DS1244Y-120 Datasheet - Page 9

• Manufacturer Part Number: DS1244Y-120
• Description: 256K NV SRAM with Phantom Clock
• Manufacturer: DALLAS [Dallas Semiconductor]

MEMORY WRITE CYCLE 2 (NOTES 2 AND 8)
RESET FOR PHANTOM CLOCK
READ CYCLE TO PHANTOM CLOCK
OE
ADDRESSES
CE
Q
DQ0–DQ7
RST
Ï Ï Ï Ï Ï Ï Ï Ï Ï
Ï Ï Ï Ï Ï Ï Ï Ï Ï
WE
CE
WE = V
IH
t
V
V
COE
t
AW
IH
Ï Ï Ï Ï
Ï Ï Ï Ï
V
IL
t
COE
IH
Ì Ì Ì
Ì Ì Ì
t
OEE
t
CO
t
OE
V
V
IL
IL
t
RC
t
t
ODW
RST
t
WC
t
OUTPUT DATA VALID
WP
V
V
IH
IL
t
DS
DATA IN
STABLE
V
V
Ì Ì Ì Ì Ì Ì Ì Ì
Ì Ì Ì Ì Ì Ì Ì Ì
IL
IL
V
t
t
DH
IH
OEW
V
V
t
t
IH
RR
IL
t
ODO
WR
t
OD
V
V
IH
IL
Ì Ì Ì
Ì Ì Ì
V
V
IH
IL
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DS1244Y