MIC3000 Datasheet, PDF (10/68 Pages) Micrel Semiconductor – SFP Management IC

MIC3000
Electrical Characteristics
Symbol
Parameter
Condition
Control and Status I/O Timing, TXFAULT, TXDISABLE, RSIN, RSOUT, and RXLOS
t_OFF
TXDISABLE Assert Time
From input asserted to optical output at
10% of nominal, C_COMP = 10nF.
t_ON
TXDISABLE De-assert Time
From input de-asserted to optical output
at 90% of nominal, C_COMP = 10nF.
t_INIT
Initialization Time
From power on or transmitter enabled to
optical output at 90% of nominal and
TX_FAULT de-asserted.⁽⁴⁾
t_INIT2
t_FAULT
Power-on Initialization Time
TXFAULT Assert Time
From power on to APC loop enabled.
From fault condition to TXFAULT
assertion.⁽⁴⁾
t_RESET
Fault Reset Time
Length of time TXDISABLE must be
asserted to reset fault condition.
t_{LOSS_ON}
t_{LOSS_OFF}
RXLOS Assert Time
RXLOS De-assert Time
From loss of signal to RXLOS asserted.
From signal acquisition to LOS
de-asserted.
t_DATA
Analog Parameter Data Ready
From power on to valid analog parameter
data available.⁽⁴⁾
t_{PROP_IN}
TXFAULT, TXDISABLE, RXLOS,
RSIN Input Propagation Time
Time from input change to corresponding
internal register bit set or cleared.⁽⁴⁾
t_{PROP_OUT}
TXFAULT, RSOUT, /INT Output
Propagation Time
From an internal register bit set or cleared
to corresponding output change.⁽⁴⁾
Fault Comparators
φ_FLTTMR
Fault Suppression Timer Clock
Period
Note 4
Accuracy
t_REJECT
Glitch Rejection
Maximum length pulse that will not cause
output to change state.⁽⁴⁾
V_SAT
Saturation Detection Threshold
High level
Low level
Power-On Hour Meter
Timebase Accuracy
Resolution
0°C ≤ T_A ≤ +70°C⁽⁴⁾
–40°C ≤ T_A ≤ +105°C
Note 4
Non-Volatile (FLASH) Memory
t_WR
Write Cycle Time⁽⁸⁾
From STOP of a one to four-byte write
transaction.⁽⁴⁾
Data Retention
Endurance Minimum Permitted Number Write
Cycles
Micrel
Min Typ Max Units
10
µs
1
ms
300 ms
200 ms
95
µs
10
µs
95
µs
100
µs
400 ms
1
µs
1
µs
0.475 0.5 0.525 ms
-3
+3 %F.S.
4.5
µs
95
%VDDA
5
%VDDA
+5
–5
%
+10
–10
%
10
hours
100
10,000
13
ms
years
cycles
M9999-101204
10
October 2004