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BL55024 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - LCD Driver - BELLING

भाग संख्या BL55024
समारोह LCD Driver
मैन्युफैक्चरर्स BELLING 
लोगो BELLING लोगो 
पूर्व दर्शन
1 Page
		
<?=BL55024?> डेटा पत्रक पीडीएफ

BL55024 pdf
BL55024
zip: 200233
5 Function Description
1.function circuit
Shanghai Belling Corp., Ltd
Tel: 86-021-64850700 Fax: 86-021-64855865
The BL550024 has all function circuits that can directly drive any static or multiplexed LCD
containing up to four commons and up to 15 segments. The function circuits include:Power-on
reset, LCD bias generator, LCD voltage selector, Oscillator, display RAM, Timing, Display latch,
Shift register, Common/segment outputs, input/output bank selector, Blinker, Data pointer, etc.
2.display function decription
The display RAM is a static 15x 4-bit RAM which stores LCD data. A logic 1 in the
RAM bit-map indicates the on state of the corresponding LCD segment; similarly, a logic 0
indicates the off state. There is a one-to-one correspondence between the RAM addresses and
the segment outputs, and between the individual bits of a RAM word and the common
outputs. (see Fig.2).
Display RAM address and SEGMENTS0~S14output
0 1 2 3 。 。 。 。 11 12 13
COM
(Com0~
Com3)
0
1
输出
2
3
14
Fig2
When display data is transmitted to the BL55024, the display bytes received are stored
in the display RAM in accordance with the selected LCD drive mode. To illustrate the filling
order, an example of a 7-segment numeric display showing all drive modes is given in Fig.3;
the RAM filling organization depicted applies equally to other LCD types.
Fig 3
2

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शेयर लिंक


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