UPD7225GB-3B7 Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD7225GB-3B7

PROGRAMMABLE LCD CONTROLLER/DRIVER

NEC => Renesas Technology 

µPD7225

Figure 2-2. 14-Segment LCD

The 14-segment type LCD can be used only in the divide-by-4 time division mode. For the 14-segment LCD type,

connect segments and commons as follows:

SEGn + 3

SEGn + 2

,,,,,,,,,,,,,

,,,,,,,, ,,,,,,

COM0

COM1

COM2

SEGn + 1 SEGn

COM3

a

f gh i b

j

k

e lmn c

SEGn : h, i, k, n

SEGn + 1 : d, e, f

SEGn + 2 : a, b, c, DP

SEGn + 3 : g, j, l, m

COM0 : a, g, h

COM1 : b, i, j, f

COM2 : c, e, k, l

COM3 : d, m, n, DP

d

DP

The following shows the input data and display pattern, and the configuration of the display data which is

automatically written into the data memory. For the 7-segment type, the lower 4 bits (D3 to D0) are decoded. For the

14-segment type, the input data and display pattern correspond to 8-bit ASCII code. The first address to which the

display data is written is indicated as address N.

Data Sheet S14308EJ6V0DS00

11

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