DS1500_11 Datasheet, PDF (3/20 Pages) Maxim Integrated Products – Y2K Watchdog RTC with Nonvolatile Control

DS1500 Y2KC Watchdog RTC with Nonvolatile Control
PARAMETER
Output Voltage (I_CCO2 = 50μA)
Battery Leakage Current
SYMBOL CONDITIONS
V_CCO2 (Note 7)
I_LKG
MIN
V_BAT -
0.3
TYP
10
MAX
100
UNITS
V
nA
DC ELECTRICAL CHARACTERISTICS
(V_CC = 0V, T_A = Over the Operating Range.)
PARAMETER
SYMBOL CONDITIONS MIN TYP MAX UNITS
Battery Current, BB32 = 0, EOSC = 0
Battery Current, BB32 = 0, EOSC = 1
V_BAUX Current BB32 = 1, SQW Open
I_BAT1
I_BAT2
I_BAUX
(Notes 8, 9)
(Notes 8, 9)
(Notes 8, 9)
0.27 1.0
µA
0.01 0.1
µA
2
µA
CRYSTAL SPECIFICATIONS
PARAMETER
Nominal Frequency
Series Resistance
Load Capacitance
SYMBOL
f_O
ESR
C_L
CONDITIONS
MIN TYP MAX
32.768
45
6
Note: The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to Application Note 58: Crystal
Considerations for Maxim Real-Time Clocks (RTCs) for additional specifications.
UNITS
kHz
kΩ
pF
AC OPERATING CHARACTERISTICS
(V_CCI = 5.0V ±10%, T_A = Over the Operating Range.)
PARAMETER
SYMBOL
Read Cycle Time
Address Access Time
CS to DQ Low-Z
CS Access Time
CS Data Off Time
OE to DQ Low-Z (0°C to +85°C)
OE to DQ Low-Z (-40°C to 0°C)
OE Access Time
OE Data Off Time
Output Hold from Address
Write Cycle Time
Address Setup Time
WE Pulse Width
CS Pulse Width
Data Setup Time
Data Hold Time
Address Hold Time
WE Data Off Time
Write Recovery Time
CEI to CEO Propagation Delay
Pulse Width, OE, WE, or CS High
Pulse Width, OE, WE, or CS Low
t_RC
t_AA
t_CSL
t_CSA
t_CSZ
t_OEL
t_OEL
t_OEA
t_OEZ
t_OH
t_WC
t_AS
t_WEW
t_CSW
t_DS
t_DH
t_AH
t_WEZ
t_WR
t_CEPD
PW _HIGH
PW_LOW
CONDITIONS
(Note 10)
(Note 10)
(Note 10)
(Note 10)
(Note 10)
(Note 10)
MIN TYP MAX UNITS
70
ns
70
ns
5
ns
70
ns
25
ns
5
ns
2
ns
35
ns
25
ns
5
ns
70
ns
0
ns
50
ns
55
ns
30
ns
5
ns
0
ns
25
ns
15
ns
10
ns
20
ns
70
ns
3 of 20