Finisar AN-2030 - Manual (Page 34)

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 µ
A 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 fSCL 0
0 400
100 kHz *,3
**
Bus free time between
STOP and START
condition tBUF 1.3
4.7 µ
s *,3
**
Hold time (repeated)
START condition tHD:STA 0.6
4.0 µ
s *,3,4
**
Low period of SCL
clock tLOW 1.3
4.7 µ
s *,3
**
High period of SCL
clock tHIGH 0.6
4.0
µ
s *,3
**
Data hold time tHD:DAT 0
0 0.9 µ
s *,3,5,6
**
Data set-up time tSU:DAT 100
250 ns *,3
**
Start set-up time tSU:STA 0.6
4.7
µ
s *,3
**
Rise time of both SDA
and SCL signals tR 20+0.1CB 300
1000
ns *
**
Fall time of both SDA
and SCL signals tF 20+0.1CB 300
300 ns *
**
Set-up time for STOP
condition tSU:STO 0.6
4.0 µ
s *
**
Capacitive load for
each bus line CB 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.