DS1251 Maxim, DS1251 Datasheet - Page 10

• Manufacturer Part Number: DS1251
• Description: The DS1251 4096K NV SRAM with Phantom Clock is a fully static nonvolatile RAM (organized as 512K words by 8 bits) with a built-in real-time clock
• Manufacturer: Maxim

MEMORY AC ELECTRICAL CHARACTERISTICS
(T
Read Cycle Time
Access Time
OE to Output Valid
CE to Output Valid
OE or CE to Output Active
Output High-Z from Deselection
Output Hold from Address Change
Write Cycle Time
Write Pulse Width
Address Setup Time
Write Recovery Time
Output High-Z from WE
Output Active from WE
Data Setup Time
Data Hold Time from WE
A
= Over the operating range.) (5V)
P ARAMETER
3 B
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
ODW
OEW
t
t
ACC
COE
WC
AW
WR
WP
RC
OE
CO
OD
OH
DS
DH
10 of 20
MIN
70
70
50
30
5
5
0
0
5
5
DS1251Y-70
M AX
9 B
70
35
70
25
25
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
N OTES
8 B
5
5
3
5
5
4
4