Rainbow Electronics DS1511 - Manual (Page 4)

DS1501/DS1511 Y2KC Watchdog Real-Time Clocks
4 of 20
AC OPERATING CHARACTERISTICS
(V
CC
= 3.3V ±10%, T
A
= 0°C to +70°C; V
CC
= 3.3V ±10%, T
A
= -40°C to +85°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Read Cycle Time t
RC
120 ns
Address Access Time t
AA
120 ns
CE to DQ Low-Z t
CEL
(Note 8) 5 ns
CE Access Time t
CEA
120 ns
CE Data Off Time t
CEZ
(Note 8) 40 ns
OE to DQ Low-Z (0°C to +85°C) t
OEL
(Note 8) 5 ns
OE to DQ Low-Z (-40°C to 0°C) t
OEL
(Note 8) 2 ns
OE Access Time t
OEA
100 ns
OE Data Off Time t
OEZ
(Note 8) 35 ns
Output Hold from Address t
OH
5 ns
Write Cycle Time t
WC
120 ns
Address Setup Time t
AS
0 ns
WE Pulse Width t
WEW
100 ns
CE Pulse Width t
CEW
110 ns
Data Setup Time t
DS
80 ns
Data Hold Time t
DH
5 ns
Address Hold Time t
AH
5 ns
WE Data Off Time t
WEZ
(Note 8) 40 ns
Write Recovery Time t
WR
15 ns
Pulse Width, OE, WE, or CE High PW
HIGH
40 ns
Pulse Width, OE, WE, or CE Low PW
LOW
100 ns
Figure 1. Read Cycle Timing
t
RC
t
CEA
t
OEA
t
CEL
t
OEL
t
OH
t
OEZ
t
AA
VALID DQ0-DQ7
OE
CE
A0–A4
t
CEZ