DS1388 Maxim, DS1388 Datasheet - Page 4

• Manufacturer Part Number: DS1388
• Description: The DS1388 I²C real-time clock (RTC), supervisor, and EEPROM is a multifunction device that provides a clock/calendar, programmable watchdog timer, power-supply monitor with reset, and 512 bytes of EEPROM
• Manufacturer: Maxim

I
and 512 Bytes EEPROM
AC ELECTRICAL CHARACTERISTICS
(V
4
SCL Clock Frequency
Bus Free Time Between a STOP
and START Condition
Hold Time (Repeated) START
Condition (Note 12)
LOW Period of SCL Clock
HIGH Period of SCL Clock
Setup Time for a Repeated
START Condition
Data Hold Time (Notes 13, 14)
Data Setup Time (Note 15)
Rise Time of Both SDA and SCL
Signals (Note 16)
Fall Time of Both SDA and SCL
Signals (Note 16)
Setup Time for STOP Condition
Capacitive Load for Each Bus
Line
I/O Capacitance (SDA, SCL, RST)
Pushbutton Debounce
Reset Active Time
EEPROM Write Cycle Time
Oscillator Stop Flag (OSF) Delay
2
CC
C RTC/Supervisor with Trickle Charger
_____________________________________________________________________
= V
CC(MIN)
PARAMETER
to V
CC(MAX)
, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
SYMBOL
t
t
t
t
t
HD:STA
HD:DAT
SU:STO
SU:STA
SU:DAT
t
PB
t
t
t
f
t
HIGH
C
t
LOW
WEE
BUF
C
RST
OSF
SCL
t
t
I/O
R
F
B
DB
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 16)
+25°C
(Note 17)
CONDITION
0.1C
0.1C
20 +
20 +
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
B
B
TYP
160
160
20
8
MAX
1000
400
100
300
300
300
400
180
180
0.9
10
10
UNITS
kHz
ms
ms
ms
ms
pF
pF
μs
μs
μs
μs
μs
μs
ns
ns
ns
μs