pi627mc-a4 AMI Semiconductor, Inc., pi627mc-a4 Datasheet - Page 12

• Manufacturer Part Number: pi627mc-a4
• Description: A Family Of 600dpi Cis Modules, Each With A Specific Led Light Source Semiconductor
• Manufacturer: AMI Semiconductor, Inc.

PI627MC-A4 / PI628MC-A4 / PI629MC-A4 Engineering Data Sheet
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Timing Characteristics at 25°C
The Timing Characteristics at 25°C for the I/O clocks are shown in Figure 5 and their definitions detailed in
Table 12. Only one video output is shown because all four video sections have identical electrical
characteristics. Since there is 7 die in sections 1, 2 and 3 and 6 die in section 4, the output waveform for
section 4 (Vout 4) is shorter by 192 pixels.
Note
1. "Prohibit crossing of the start pulse", tprh, is to indicate that the start pulse should not be active high
between two consecutive low going clock pulses. All falling clock edges under an active high start pulse
loads the internal shift register, therefore the start pulse must be active over only one falling clock edge.
A high start pulse crossing over any rising clock edges are ignored by the shift register. One simple way
to ensure that the start pulse will not be actively high for any two consecutive falling clock edges is to
generate the start pulse on a rising clock edge and terminate it on the following rising clock edge.
Clock cycle time
Clock pulse width
Clock duty cycle
Prohibit crossing time of the
Start Pulse
Data setup time
Data hold time
Signal delay time
Signal settling time
(1)
Item
Figure 5. Module Timing Diagram
Table 12. Timing Definitions
Page 12 of 13, Revised 2-23-04
Symbol
tprh
tds
tdh
tsh
tw
tdl
to
0.182
Min
100
46
25
50
50
50
50
Typical
1448
Max
1.93
75
Units
Ps
ns
ns
ns
ns
ns
ns
%