DS1501_09 Datasheet, PDF (4/22 Pages) Maxim Integrated Products – Y2K-Compliant Watchdog Real-Time Clocks

DS1501/DS1511 Y2KC Watchdog Real-Time Clocks
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
Read Cycle Time
t_RC
120
Address Access Time
t_AA
CE to DQ Low-Z
t_CEL
(Note 8)
5
CE Access Time
t_CEA
CE Data Off Time
t_CEZ
(Note 8)
OE to DQ Low-Z (0°C to +85°C)
t_OEL
(Note 8)
5
OE to DQ Low-Z (-40°C to 0°C)
t_OEL
(Note 8)
2
OE Access Time
t_OEA
OE Data-Off Time
t_OEZ
(Note 8)
Output Hold from Address
t_OH
5
Write Cycle Time
t_WC
120
Address Setup Time
t_AS
0
WE Pulse Width
t_WEW
100
CE Pulse Width
t_CEW
110
Data Setup Time
t_DS
80
Data Hold Time
t_DH
5
Address Hold Time
t_AH
5
WE Data-Off Time
t_WEZ
(Note 8)
Write Recovery Time
t_WR
15
Pulse Width, OE, WE, or CE High
PW_HIGH
40
Pulse Width, OE, WE, or CE Low
PW_LOW
100
Figure 1. Read Cycle Timing
TYP MAX UNITS
ns
120
ns
ns
120
ns
40
ns
ns
ns
100
ns
35
ns
ns
ns
ns
ns
ns
ns
ns
ns
40
ns
ns
ns
ns
A0–A4
CE
t_RC
t _AA
t_CEA
t_OH
t_CEZ
t_CEL
OE
t_OEA
t_OEZ
DQ0-DQ7
t_OEL
VALID
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