MA28139 Datasheet, PDF (26/34 Pages) Dynex Semiconductor – OBDH Bus Terminal

MA28139
No. Parameter
Condition
Min.
Max. Units
T24 LOSC ↓ to NIDS1n, NIDS2n, RIDS1n,
RIDS2n ↓ (hold max.)
CTU mode or RTU mode
10
-
ns
T25 LOSC ↓ to NIDS1n, NIDS2n, RIDS1n,
RIDS2n ↓ (setup max.)
CTU mode or RTU mode
15
-
ns
T26 LOSC ↑↓ to TIMEOUTn valid
CTU mode or RTU mode
-
55
ns
Timeout period = 16τ_LOSC
CTU mode or RTU mode Guaranteed, not measured
Redundant to Dual or Redundant to Nominal
bus changeover TIMEOUTn low reset period
= τ_LOSC
CTU mode or RTU mode
Guaranteed, not measured
Table 6: Clock Detector Characterisation
No. Parameter
Condition
Min.
Max. Units
T27 RIRCLK ↓ to BCP(1:4), BCPVAL valid
T28 RIRCLK ↓ to MLADD(0:4)
T29 RIRCLK ↓ to MLDATA
T30 RIRCLK ↓ to CHADD
T31 RIRCLK ↓ to MOSC, MOLC, MOHL, MOBT,
MODBL, MODS16, MODS8, MOANS,
MOAND valid
T32 RIRCLK ↓ to IRCLK, CTCLK, TRCLK valid
T33 RIRCLK ↓ to PC, ANCLK, SOC, SH valid
T34 RIRCLK ↓ to DATARRT, ENRRT valid
T35 ANSIN to RIRCLK ↑ setup
T35a ANSIN to RIRCLK ↑ hold
T36 NIDS1n, NIDS2n, RIDS1n, RIDS2n ↓ to
DATARRT, ENRRT
CTU mode
CTU mode
CTU mode
CTU mode
CTU mode
CTU mode
CTU mode
CTU mode
RTU mode
RTU mode
RTU mode
-
70
ns
-
80
ns
-
80
ns
-
75
ns
-
70
ns
-
70
ns
-
70
ns
-
55
ns
0
-
ms
30
-
ns
-
75
ns
Note 1: RTU mode timing parameters not explicitly stated will be lower than the sum of the appropriate parameters for the
RTU Kernel, BAR1 and BAT2. Parameters T34 and T36 above may be used to estimate the difference in timing
between CTU mode (i.e. where the RTU Kernel, BAR1 and BAT2 are not coupled together) and RTU mode usage
(i.e. where those components are coupled together).
Note 2: Configuration pins such as TA(0:5), EXTFMT, EXTMLA1 and EXTMLA2 and MRSTn are not considered here
because they do not need to be dynamically changed.
Note 3: V_DD = 5V ±10% over full temperature range. V_OH = V_OL = V_DD/2, V_IL = V_SS, V_IH = V_DD, C_L = 50pF.
Note 4: Total dose radiation not exceeding 10⁵ Rads (Si).
Note 5: Tables 4, 5, 6 & 7 contain Mil-Std-883, method 5005, subgroups 9, 10, 11.
Table 7: RTU Kernel Characterisation
Symbol Parameter
Conditions
Min.
Typ.
C_IN
C_OUT
Input Capacitance
Output Capacitance
V_I = 0V
V_I/O = 0V
-
3
-
5
Note 1: T_A = 25˚C and f = 1MHz. Data obtained by characterisation or analysis; not routinely measured.
Table 8: Capacitance
Max.
5
7
Units
pF
pF
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