7
8
9
10
11
12
SP(START)
GND
CP(CLOCK)
Vn
GLED
VLED
Shift register start pulse
Ground; 0V
Sampling clock pulse
Negative power supply
Ground for the light source; 0V
Supply for the light source
Table 1. Pin configuration
Module Versus LED Light Source
Table 2 lists the module's model and its corresponding LED Light Source.
Module
PI227MC-A4
PI228MC-A4
PI229MC-A4
LED Light Source
660 nm RED LED Bar
High power Yellow-Green LED Bar
Low power Yellow-Green LED Bar
Table 2. Module Vs LED Light Source
Absolute Maximum Rating:
Table 3A shows the absolute maximum ratings. The parameters are common to all three
modules. Table 3B shows the absolute maximum ratings that are different among the
three modules.
Parameter
Power Supply
Symbols
Vdd
Idd
Vn
In
Vih
Vil
Maximum Rating
7
100
-15
35
Vdd – 0.5V
-0.5
Units
V
ma
V
ma
V
V
Input clock pulse
(high level)
Input clock pulse
(low level)
Note: These parameters are absolute maximums do not operate under these conditions.
Table 3A. Electrical Absolute Maximum Rating
Parameter
Symbols
Power Supply:
Module
LED light source VLED
ILED
Maximum Rating
PI227MC-A4 PI228MC-A4
6.0
6.0
0.7
1.30
Units
PI229MC-A4
6.0
1.30
V
A
Note: These parameters are absolute maximums do not operate under these conditions
.
Table 3B. LED Power Absolute Maximum Rating
PAGE 4 OF 10 - PI227/228/229, 01-31-04
AMI [ AMI SEMICONDUCTOR ]
