em3027 EM Microelectronic, em3027 Datasheet - Page 21

• Manufacturer Part Number: em3027
• Description: Real-time Clock With I2c Or Spi Interface, Crystal Temperature Compensation, Battery Switchover And Trickle Charger
• Manufacturer: EM Microelectronic

10.1 AC characteristics – I2C
V
Table 13
Copyright © 2008, EM Microelectronic-Marin SA
07/08 – rev B
Length of spikes suppressed by the
SS
Bus Free Time Between STOP and
Capacitive Load For Each Bus Line
10 AC Characteristics
Rise Time of Both SDA and SCL
Fall Time of Both SDA and SCL
Hold Time (Repeated) START
Data Valid Acknowledge Time
Setup Time (Repeated) STOP
= 0V and T
Setup Time START Condition
I/O Capacitance (SDA, SCL)
Internal SCL pull-up resistor
input filter on SCL ans SDA
HIGH Period of SCL Clock
LOW Period of SCL Clock
SCL Clock Frequency
Signals (See note 1)
START Condition
Data Setup Time
Data Valid Time
Data Hold Time
PARAMETER
Condition
Condition
Signals
A
=-40 to +125°C, unless otherwise specified
SYMBOL
t
t
t
t
t
t
t
HD:DAT
SU:DAT
VD:DAT
VD:ACK
SU:STO
HD:STA
SU:STA
t
t
R
f
t
C
HIGH
LOW
t
C
SCL
BUF
t
t
SP
R
F
I/O
PU
B
CONDITIONS
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc ≥ 3.0V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc >1.8V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
Vcc>1.3V
21
MIN
100
0.4
0.5
1.0
0.2
1.3
1.7
4.5
0.4
0.5
0.6
1.2
1.5
4.0
0.9
1.1
3.5
20
30
50
20
30
50
50
80
20
30
50
TYP
100
MAX
1000
400
300
100
200
300
200
300
400
200
50
10
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UNITS
kHz
kΩ
μs
μs
μs
μs
μs
μs
pF
pF
ns
ns
ns
ns
ns
ns
ns