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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r
9/26/02 Revision D Page 34
DC ELECTRICAL CHARACTERISTICS ( Vcc = 3.15V to 3.60V)
PARAMETER SYMBOL CONDITION
MIN TYP MAX UNITS NOTES
Input Leakage (SDA,
SCL)
I
LI
-1 +1
µA
2
Input Logic 1 (SDA,
SCL)
V
IH
0.7Vcc Vcc+0.5 V 1
Input Logic 0 (SDA,
SCL)
V
IL
GND-0.5 0.3Vcc V 1
I
OL1
0.4V 3 mA 1 Low Level Output
Current (SDA)
I
OL2
0.6V 6 mA 1
AC ELECTRICAL CHARACTERISTICS ( Vcc = 3.15V to 3.60V)
PARAMETER SYMBOL CONDITION
MIN TYP MAX UNITS NOTES
SCL clock frequency f
SCL
0
0
400
100
kHz *,3
**
Bus free time between
STOP and START
condition
t
BUF
1.3
4.7
µs
*,3
**
Hold time (repeated)
START condition
t
HD:STA
0.6
4.0
µs
*,3,4
**
Low period of SCL
clock
t
LOW
1.3
4.7
µs
*,3
**
High period of SCL
clock
t
HIGH
0.6
4.0
µs
*,3
**
Data hold time t
HD:DAT
0
0
0.9
µs
*,3,5,6
**
Data set-up time t
SU:DAT
100
250
ns *,3
**
Start set-up time t
SU:STA
0.6
4.7
µs
*,3
**
Rise time of both SDA
and SCL signals
t
R
20+0.1C
B
300
1000
ns *
**
Fall time of both SDA
and SCL signals
t
F
20+0.1C
B
300
300
ns *
**
Set-up time for STOP
condition
t
SU:STO
0.6
4.0
µs
*
**
Capacitive load for
each bus line
C
B
400 pF
EEPROM write time T
W
10 ms
* Fast mode
** Standard mode
Notes
1. All voltages are referenced to ground.
2. Input levels equal either Vcc or GND.
3. The output must be configured to source.
4. The output must be configured to have pull-up resistance enabled.
5. This is the time for one comparison. The cycle is multiplied by 3.
6. This parameter is measured with maximum output current.