EPVP6200 Datasheet, PDF (41/57 Pages) ELAN Microelectronics Corp – VFD Controller

27 HL
2A HL
2D HL
30 HL
33 HL
36 HL
27 HU
2A HU
2D HU
30 HU
33 HU
36 HU
28 HL
2B HL
2E HL
31 HL
34 HL
37 HL
b) Key Scanning Data Buffers:
KEY1
KEY2
KEY3
KEY4
28 HU
2B HU
2E HU
31 HU
34 HU
37 HU
ePVP6200
VFD Controller
29 HL
2C HL
2F HL
32 HL
35 HL
38 HL
DIG14
DIG15
DIG16
DIG17
DIG18
DIG19
Fig. 10 12 x 4 Configuration Key Matrix
The key matrix is of 12 x 4 configuration is as shown in the above figure.
The data of each key is stored as illustrated below, and is read by a read command, starting
from the least significant bit.
KEY1….KEY4
SEG1/KS1
SEG3/KS3
SEG5/KS5
SEG7/KS7
SEG9/KS9
SEG11/KS11
b0 -- -- b3
KEY1….KEY4
SEG2/KS2
SEG4/KS4
SEG6/KS6
SEG8/KS8
SEG10/KS10
SEG12/KS12
b4 -- -- b7
Reading sequence
When the most significant bit of data (SEG12, b7) has been read, the least significant bit of
the next data (SEG1, b0) is read.
8.1 Commands
A command sets the display mode and status of the VFD driver.
This specification is subject to change without further notice.
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