MIL-DTL-62739A(AT)
1/Fin
H
400 Hz
P1-45
L
H
IOD/5
P1-33
0 ns MIN.
L
0 ns
H
OEN-Q
MIN.
P1-38
250 ns MIN.
L
H
Q PULSE
T run
P1-42
L
H= LOGIC LEVEL 1
L= LOGIC LEVEL 0
FIGURE 7. Waveforms to clear and latch real time clock.
H
IOC/4
P1-32
L
H
IOD/5
P1-33
L
0 ns
0 ns
0 ns
0 ns
H
MRD/
MIN.
MIN.
MIN.
MIN.
P1-36
L
300 ns
300 ns
300 ns
300 ns
MIN.
MIN.
MIN.
MIN.
H
BUS 0-7
VALID DATA AVAILABLE
VALID DATA AVAILABLE
P1-21 THRU 28
RTC LS BYTE
RTC MS BYTE
L
H= LOGIC LEVEL 1
L= LOGIC LEVEL 0
FIGURE 8. Waveforms to read real time clock latches.
18
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