DS1346 MAXIM [Maxim Integrated Products], DS1346 Datasheet - Page 3

• Manufacturer Part Number: DS1346
• Description: Low-Current, SPI-Compatible Real-Time Clocks
• Manufacturer: MAXIM [Maxim Integrated Products]

AC ELECTRICAL CHARACTERISTICS
(V
Notes 1, 5)
CRYSTAL CHARACTERISTICS
Note 1: All parameters are 100% tested at T
Note 2: I
Note 3: Timekeeping current is specified with CS = V
Note 4: Guaranteed by design and not 100% production tested.
Note 5: All values referred to V
SPI SERIAL TIMING
Input Rise Time
Input Fall Time
Output Rise Time
Output Fall Time
SCLK Period
SCLK High Time
SCLK Low Time
SCLK Fall to DOUT
Valid
DIN to SCLK Setup
Time
DIN to SCLK Hold
Time
SCLK Rise to
Rise Hold Time
High Impedance
Time
Nominal Frequency
Series Resistance
Load Capacitance
Low-Current, SPI-Compatible Real-Time Clocks
CC
High Pulse Width
High to DOUT
to SCLK Setup
PARAMETER
PARAMETER
= +2.0V to +5.5V, T
not production tested.
CC
is specified with DOUT open, CS = DIN = GND, SCLK = 4MHz at V
_______________________________________________________________________________________
A
SYMBOL
SYMBOL
= -40°C to +85°C. Typical values are at V
t
t
t
t
t
t
rOUT
fOUT
ESR
CSW
t
t
t
t
t
t
t
CSH
CSZ
CSS
t
DO
C
rIN
fIN
CP
CH
DS
DH
f
CL
O
IH(MIN)
L
and V
DIN, SCLK,
DIN, SCLK,
DOUT, C
DOUT, C
V
V
V
V
V
V
DS1346
DS1347
CC
CC
CC
CC
CC
CC
= +2V
= +5V
= +2V, C
= +5V, C
= +2V
= +5V
A
IL(MAX)
= +25°C. Limits over temperature are guaranteed by design and characterization and
LOAD
LOAD
levels.
LOAD
LOAD
= 100pF
= 100pF
CC
, SCLK = DIN = GND, DOSF = 0, EGFIL = 1.
CONDITIONS
CONDITIONS
= 100pF
= 100pF
CC
= +3.3V, T
CC
= +5V; SCLK = 1MHz at V
A
= +25°C, unless otherwise noted.) (Figure 5,
1000
MIN
238
100
100
100
200
200
100
MIN
20
50
32.768
TYP
TYP
12.5
10
10
5
5
6
CC
= +2.0V.
MAX
MAX
300
100
100
100
UNITS
UNITS
kHz
k
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
3