Datasheet > BU91501KV-E2

BU91501KV-E2

更新时间： 2022-02-26 13:44:22

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罗姆 - ROHM		/
页数	文件大小	规格书
34页	2214K
描述
Multi- function LCD Segment Drivers

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BU91501KV-E2 数据手册

Datasheet

BU91501KV-M

(2) Read Mode (KEY RD command only)

The following occurs when Key Read by KEY RD command.

If KEY RD command is recognized at the rising edge of 8th CLK, it enters Read mode after the falling edge of 8th CLK

and then key data is output through DO.

Setting CSB=”H” can exit Read mode after or during Serial Data Transfer.

Figure 8. Serial Data Output Format

Command Transfer Method

After CSB=”H”→”L”, the 1st byte shall be a command.

Please refer to “Command Table”.

When set command except Data write(DATAWR), the next byte will be (continuously) a command.

When set DATAWR command, the following bytes will be display data bytes.

Command

(DATAWR)

Display Data

…

Once it becomes display data transfer mode, it will not be able to send command.

If you send command again, please rise CSB=”H”.

Display Data Transfer Method

This LSI has Display Data RAM (DDRAM) of 51×4=204bit.

The relationship between data input and display data, DDRAM data and address are as follows.

Command

00001010

D10 D11 D12 D13

…

→ Display Data

Display data will be stored in DDRAM. The address to be written is specified by Address set (ADSET) command and the

address is automatically incremented in every 4bit data if 1/4 Duty mode or in every 3 bit if 1/3 Duty mode respectively.

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TSZ02201-0P4P0D301120-1-2

8.July.2015 Rev.001

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TSZ22111･15･001

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