DS1631 Datasheet, PDF (11/19 Pages) National Semiconductor (TI) – CMOS Dual Peripheral Drivers

DS1244/DS1244P
MEMORY AC ELECTRICAL CHARACTERISTICS
Over the operating range (3.3V)
PARAMETER
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
SYMBOL
t_RC
t_ACC
t_OE
t_CO
t_COE
t_OD
t_OH
t_WC
t_WP
t_AW
t_WR
t_ODW
t_OEW
t_DS
t_DH
DS1244W-120
MIN
MAX
120
120
60
120
5
40
5
120
90
0
20
40
5
50
20
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
5
5
3
10
5
5
4
4
PHANTOM CLOCK AC ELECTRICAL CHARACTERISTICS
Over the operating range (3.3V)
PARAMETER
Read Cycle Time
CE Access Time
OE Access Time
CE to Output Low-Z
OE to Output Low-Z
CE to Output High-Z
OE to Output High-Z
Read Recovery
Write Cycle Time
Write Pulse Width
Write Recovery
Data Setup Time
Data Hold Time
CE Pulse Width
RESET Pulse Width
SYMBOL
t_RC
t_CO
t_OE
t_COE
t_OEE
t_OD
t_ODO
t_RR
t_WC
t_WP
t_WR
t_DS
t_DH
t_CW
t_RST
MIN
120
5
5
20
120
100
20
45
0
105
120
TYP
MAX
100
100
40
40
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
5
5
3
10
4
4
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