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CybraTech (2000) Ltd.
SOC-3000/i Scale-On-Chip
ASIC
Technical Specification
Revision B
Page 79
July, 2002
LCD Display Interface
The SOC-3000 interface supports LCD displays as follows:
•
Up to four backplanes, each driving 40 LCD segments
•
Static, 1/2-bias and 1/3-bias display options
•
Electro-luminescent (EL) lighting control
The hardware interface is shown in Figure 30.
The SOC-3000 is equipped with bias generators with voltage-followers buffers that generate
the LCD bias voltages and backplane multiplexing signals. Thus, LCD displays can be
directly connected to the SOC-3000 without any external component.
Backplane
Multiplexer
Segment Inputs
1
2
3
4
18 19 20 21
1
2
22 23
40
61
S40
LCD DISPLAY
(Up to 4 Backplanes)
(Up to 40 Segments)
SOC-3000
PIN #
Signal
FIGURE 30: LCD DISPLAY INTERFACE