NEC 78K0/L 3 - See it! Series, Руководство пользователя

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78K0/Lx3 - See it!
User’s Manual U18759EE2V0UM00
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3.11 LCD1, 224 segment LCD panel
The 78K0/Lx3 - See it! board is equipped with a 224 segment LCD panel. The LCD is a transflective
model type operating at 5V supply voltage. It can operate at a eight times multiplex rate. The LCD driver
specification is as following:
LCD driver specification Mode
Driver voltage generation Internal resistance division
Bias method 1/4
Timesharing 8
Common signals
8 (COM0-COM7)
Segment number 28 (SEG4-SEG31)
Number of maximum display pixels 224 (28 segments × 8 common)
Table 9: LCD driver specification
The LCD is divided into a character and indicator field. The character field is composed of six 5x7 DOT
matrix characters. The indicator field includes a set of predefined symbols, for instance weekday, battery
and antenna symbols. The outline of the LCD and the corresponding segment assignment is shown
below.
Figure 4: LCD outline
Indicator field
Character field