DS1338 Maxim, DS1338 Datasheet - Page 3

• Manufacturer Part Number: DS1338
• Description: The DS1338 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM
• Manufacturer: Maxim

DC ELECTRICAL CHARACTERISTICS
(V
otherwise noted.) (Note 1)
AC ELECTRICAL CHARACTERISTICS
(V
SCL Clock Frequency
Bus Free Time Between STOP
and START Condition
Hold Time (Repeated) START
Condition (Note 8)
LOW Period of SCL Clock
HIGH Period of SCL Clock
Setup Time for Repeated
START Condition
Data Hold Time (Notes 9, 10)
Data Setup Time (Note 11)
Rise Time of Both SDA and
SCL Signals (Note 12)
Fall Time of Both SDA and
SCL Signals (Note 12)
Setup Time for STOP
Condition
Capacitive Load for Each Bus
Line
I/O Capacitance (SDA, SCL)
Oscillator Stop Flag (OSF)
Delay
V
V
(Note 7)
V
CC
CC
BAT
BAT
BAT
= 0V, T
= V
Current (OSC ON); V
Current (OSC ON); V
Data-Retention Current (Osc Off); V
CC(MIN)
PARAMETER
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
to V
CC(MAX)
, T
PARAMETER
BAT
BAT
A
= -40°C to +85°C) (Note 1)
= 3.7V, SQW/OUT OFF (Note 7)
= 3.7V, SQW/OUT ON (32kHz)
SYMBOL
t
t
t
t
t
HD:STA
HD:DAT
SU:DAT
SU:STO
SU:STA
t
t
f
t
C
t
HIGH
LOW
C
SCL
BUF
OSF
t
t
R
F
I/O
B
BAT
= 3.7V (Note 7)
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
(Note 12)
(Note 13)
(Note 14)
CONDITION
3 of 16
SYMBOL
I
I
I
BATOSC1
BATOSC2
BATDAT
20 + 0.1C
20 + 0.1C
20 + 0.1C
20 + 0.1C
DS1338 I
MIN
100
100
250
1.3
4.7
0.6
4.0
1.3
4.7
0.6
4.0
0.6
4.7
0.6
4.0
0
0
0
BAT
MIN
B
B
B
B
= 3.0V, T
2
C RTC with 56-Byte NV RAM
TYP
100
1025
TYP
800
10
A
= +25°C, unless
MAX
1000
400
100
300
300
300
400
MAX
1200
1400
0.9
10
100
UNITS
UNITS
kHz
ms
pF
pF
nA
nA
nA
µs
µs
µs
µs
µs
µs
ns
ns
ns
µs