DS1390(2004) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
DS1390 Datasheet PDF : 24 Pages
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Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
AC ELECTRICAL CHARACTERISTICS—3-WIRE INTERFACE
(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C.) (Note 1) (Figures 3, 4)
PARAMETER
SCLK Frequency (Note 13)
Data to SCLK Setup
SCLK to Data Hold
SCLK to Data Valid (Notes 13,
14, 15)
SCLK Low Time (Note 13)
SCLK High Time (Note 13)
SCLK Rise and Fall
CS to SCLK Setup
SCLK to CS Hold
CS Inactive Time (Note 13)
CS to Output High Impedance
SYMBOL
fSCLK
tDC
tCDH
tCDD
tCL
tCH
tR, tF
tCC
tCCH
tCWH
tCDZ
CONDITION
2.7V ≤ VCC ≤ 5.5V
1.71V ≤ VCC ≤ 1.89V
(Notes 13, 14)
(Notes 13, 14)
2.7V ≤ VCC ≤ 5.5V
1.71V ≤ VCC ≤ 1.89V
2.7V ≤ VCC ≤ 5.5V
1.71V ≤ VCC ≤ 1.89V
2.7V ≤ VCC ≤ 5.5V
1.71V ≤ VCC ≤ 1.89V
(Note 13)
(Note 13)
2.7V ≤ VCC ≤ 5.5V
1.71V ≤ VCC ≤ 1.89V
(Note 13, 14)
MIN TYP MAX UNITS
4
MHz
1
30
ns
30
ns
80
ns
160
110
ns
400
110
ns
400
200
ns
400
ns
100
ns
400
ns
500
40
ns
AC ELECTRICAL CHARACTERISTICS
(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
Pushbutton Debounce
Reset Active Time
Oscillator Stop Flag (OSF) Delay
SYMBOL
PBDB
tRST
tOSF
(Note 16)
CONDITIONS
MIN TYP MAX UNITS
160
200
ms
160
200
ms
100
ms
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