X9522 Datasheet, PDF (21/29 Pages) Intersil Corporation – Laser Diode Control for Fiber Optic Modules

X9522
A.C. CHARACTERISTICS (See Figure 20, Figure 21, Figure 22)
Symbol
f_SCL
t_IN(5)
t_AA(5)
t_BUF(5)
t_LOW
t_HIGH
t_SU:STA
t_HD:STA
t_SU:DAT
t_HD:DAT
t_SU:STO
t_DH(5)
t_R(5)
t_F(5)
t_SU:WP
t_HD:WP
Cb⁽⁵⁾
Parameter
SCL Clock Frequency
Pulse width Suppression Time at inputs
SCL LOW to SDA Data Out Valid
Time the bus free before start of new transmission
Clock LOW Time
Clock HIGH Time
Start Condition Setup Time
Start Condition Hold Time
Data In Setup Time
Data In Hold Time
Stop Condition Setup Time
Data Output Hold Time
SDA and SCL Rise Time
SDA and SCL Fall Time
WP Setup Time
WP Hold Time
Capacitive load for each bus line
400kHz
Min
0
50
0.1
1.3
1.3
0.6
0.6
0.6
100
0
0.6
50
20 +.1Cb ⁽²⁾
20 +.1Cb ⁽²⁾
0.6
0
Max
400
0.9
300
300
400
Units
kHz
ns
µs
µs
µs
µs
µs
µs
ns
µs
µs
ns
ns
ns
µs
µs
pF
A.C. TEST CONDITIONS
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Levels
Output Load
NONVOLATILE WRITE CYCLE TIMING
Symbol
t_WC(4)
Parameter
Nonvolatile Write Cycle Time
0.1Vcc to 0.9Vcc
10ns
0.5Vcc
See Figure 18
Min.
Typ.(1)
5
Max.
10
Units
ms
CAPACITANCE (T_A = 25°C, F = 1.0 MHZ, VCC / V1 = 5V)
Symbol
C_OUT ⁽⁵⁾
C_IN ⁽⁵⁾
Parameter
Output Capacitance (SDA, V2RO, V3RO)
Input Capacitance (SCL, WP)
Max
Units
8
pF
6
pF
Test Conditions
V_OUT = 0V
V_IN = 0V
Notes: 1. Typical values are for TA = 25°C and Vcc / V1 = 5.0V
Notes: 2. Cb = total capacitance of one bus line in pF.
Notes: 3. Over recommended operating conditions, unless otherwise specified
Notes: 4. t_WC is the time from a valid STOP condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle. It is
the minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used.
Notes: 5. This parameter is not 100% tested.
21
FN8208.0
March 10, 2005