UT69RH051 Datasheet, PDF (12/19 Pages) Aeroflex Circuit Technology – Radiation-Hardened MicroController

7.0 SERIAL PORT TIMING CHARACTERISTICS
(V_DD = 5.0V ±10%; -55°C < T_C < +125°C)
SYMBOL
PARAMETER
t_XLXL1
Serial Port Clock Period
t_QVXH
Output Data Setup to Clock Rising Edge
t_XHQX
Output Data Hold after Clock Rising Edge
t_XHDX1
Input Data Hold after Clock Rising Edge
t_XHDV
Clock Rising Edge to Input Data Valid
Note:
1. Guaranteed, but not tested.
MINIMUM
12 t_CLCL-10
10 t_CLCL-133
2 t_CLCL-70
0
MAXIMUM
12 t_CLCL+10
10 t_CLCL-133
UNIT
ns
ns
ns
ns
ns
ALE
CLOCK
OUTPUT DATA
(WRITE TO SBUF)
INPUT DATA
(CLEAR RI)
0
1
2
3
4
5
T_XLXL
T_QVXH
T_XHQX
0
T_XHDV
VALID
1
VALID
2
T_XHDX
VALID
3
VALID
4
VALID
Figure 9. Serial Port Timing Waveforms
6
5
VALID
7
6
VALID
8
7
SET TI
VALID
SET RI
8.0 EXTERNAL CLOCK DRIVE TIMING CHARACTERISTICS
SYMBOL
PARAMETER
1/t_CLCL
Oscillator Frequency
t_CHCX
High Time
t_CLCX
Low Time
t_CLCH
Rise Time
t_CHCL
Fall Time
Note:
1. Guaranteed, but not tested.
MINIMUM
16
16
MAXIMUM
20
20
20
UNIT
MHz
ns
ns
ns
ns
V_DD - 0.5
0.45 V
0.7 V_DD
0.2 V_DD - 0.1
t_CHCX
t_CHCX
t_CHCL
t_CLCH
t_CLCL
Figure 10. External Clock Drive Timing Waveforms
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