AMIS-710414 Datasheet, PDF (5/7 Pages) AMI SEMICONDUCTOR – 400dpi CIS Module Four Parallel Video Outputs for RED + IR Light Source

AMIS-710414-A4: 400dpi CIS Module
Four Parallel Video Outputs for RED + IR Light Source
Data Sheet
9.0 Switching Characteristics (25°C)
The switching characteristics (at 25°C) for the I/O clocks are shown in Figure 4. For the timing symbol definitions, see Table 6.
Figure 3: Timing Diagram
Note: Only one video output is shown because all four videos have identical electrical characteristics. The only physical difference between outputs is in the Section 4 output,
VOUT4. Section 4 has only six sensor chips, hence its active scan is shorter by 128 pixels.
Table 6: Timing Symbol Definitions for Figure 3 Timing Diagram
Parameters
Symbol
Min.
Typ.
Max.
Units
Clock cycle time
to
0.20
4.0
µs
Clock pulse width
tw
50
ns
Clock duty cycle
25
75
%
Prohibit crossing time of SP
tprh
0
ns
Data setup time
tds
20
ns
Data hold time
tdh
0
ns
Signal delay time
tdl
20
ns
Signal settling time
tsh
100
ns
Note:
(1) "Prohibit crossing of start pulse" is to indicate that the start pulse should not be active high between any two consecutive high going clock pulse or two consecutive
low going clock pulses (see Figure 3). Only one high going clock under the active high start pulse initiates the internal shift register and it must not be active over
two high going clocks. All low going clock pulses will not initiate the shift register. To ensure that the start pulse will not be actively high during two consecutive
high going clocks, the circuit should be designed to keep the start pulse active only for one high going clock cycle.
AMI Semiconductor – Aug. 06, M-20612-001
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