1338C-18SRI8 IDT, 1338C-18SRI8 Datasheet - Page 13

• Manufacturer Part Number: 1338C-18SRI8
• Description: Real Time Clock Real Time Clock with Embedded Crystal
• Manufacturer: IDT

Specifications of 1338C-18SRI8

• Part # Aliases: IDT1338C-18SRI8

AC Electrical Characteristics
IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 13
IDT1338
REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM
(V
WARNING: Negative undershoots below -0.3 V while the device is in battery-backed mode may cause loss
of data.
Note 1: Limits at -40°C are guaranteed by design and are not production tested.
Note 2: All voltages referenced to ground.
Note 3: SCL only.
Note 4: SDA and SQW/OUT.
Note 5: I
Note 6: Specified with the I
SCL Clock Frequency
Bus Free Time Between a STOP and
START Condition
Hold Time (Repeated) START
Condition, Note 8
Low Period of SCL Clock
High Period of SCL Clock
Setup Time for a 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
(Note 12)
I/O Capacitance (SDA, SCL)
Oscillator Stop Flag (OSF) Delay
CC
= V
CCA
CC(MIN)
—SCL clocking at max frequency = 400 kHz.
Parameter
to V
CC(MAX)
2
C bus inactive.
, TA = -40°C to +85°C) (Note 1)
Symbol
t
t
t
t
t
HD:STA
HD:DAT
SU:STO
SU:STA
SU:DAT
t
t
t
t
f
C
HIGH
LOW
SCL
BUF
C
OSF
t
t
I/O
R
F
B
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 13
Note 14
Conditions
20 + 0.1C
20 + 0.1C
20 + 0.1C
20 + 0.1C
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
B
B
IDT1338
Typ. Max. Units
100
1000
400
100
300
300
300
400
0.9
10
REV R 020713
kHz
ms
µs
µs
µs
µs
µs
µs
ns
ns
ns
µs
pF
pF
RTC