lc7940yc Sanyo Semiconductor Corporation, lc7940yc Datasheet - Page 13

• Manufacturer Part Number: lc7940yc
• Description: Dot-matrix Lcd Drivers
• Manufacturer: Sanyo Semiconductor Corporation

Segment Data Not Multiples of 4
Example.
If this timing data is sent, data elements (m, 229), (m,
230), (m+1, 229), (m+1. 230)... will not appear in the
output (O69 and O70 on chip 3). This is because the
LC7940YC (or LC7941YC) converts serial/parallel data
In this case, (m, 231) is output on O71 on chip 3, and (m,
232) on O72 on chip 3. However, these outputs are not
connected to the panel and are, therefore, invalid.
LOAD
This catalog provides information as of June, 1999. Specifications and information herein are subject to
change without notice.
SDI
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
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could cause damage to other property. When designing equipment, adopt safety measures so that these
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and error prevention circuits for safe design, redundant design, and structural design.
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Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for
the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
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LOAD
SDI
m,1
01
LC7940YC
#1
m,2
080
LCD panel (100
m,1
---
m,2
,228
01
LC7940YC
LC7940YC, LC7941YC
Valid display data
#2
---
---
m,229
080
230 pixels)
,228
Multiple of 4
m,230
in 4
data that is not a multiple of 4, like 230, the following
scheme is used.
01
LC7940YC
m,229
#3
---
–
m+1,1
bit units, which also decreases power dissipation . For
070
m,230
m+1,2
m,231
Dummy data
m,232
,228
m+1,229 m+1,230
No. 6157—13/13