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EPVP6200 Datasheet(PDF) 41 Page - ELAN Microelectronics Corp

Part No. EPVP6200
Description  VFD Controller
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Maker  EMC [ELAN Microelectronics Corp]
Homepage  http://www.emc.com.tw
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ePVP6200
VFD Controller
This specification is subject to change without further notice.
11.18.2004 (V1.53) 35 of 57
Reading sequence
27 HL
27 HU
28 HL
28 HU
29 HL
DIG14
2A HL
2A HU
2B HL
2B HU
2C HL
DIG15
2D HL
2D HU
2E HL
2E HU
2F HL
DIG16
30 HL
30 HU
31 HL
31 HU
32 HL
DIG17
33 HL
33 HU
34 HL
34 HU
35 HL
DIG18
36 HL
36 HU
37 HL
37 HU
38 HL
DIG19
b)
Key Scanning Data Buffers:
KEY1
KEY2
KEY3
KEY4
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
KEY1….KEY4
SEG1/KS1
SEG2/KS2
SEG3/KS3
SEG4/KS4
SEG5/KS5
SEG6/KS6
SEG7/KS7
SEG8/KS8
SEG9/KS9
SEG10/KS10
SEG11/KS11
SEG12/KS12
b0 -- -- b3
b4 -- -- b7
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.




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