HT1621 データシートの表示（PDF） - Holtek Semiconductor

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HT1621

RAM Mapping 32 x 4 LCD Controller for I/O MCU

Holtek Semiconductor 

Read-Modify-Write Mode (Successive Address Accessing)

CS

WR

HT1621

RD

D ATA

1 0 1 A5 A4 A3 A2 A1 A0 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0

M e m o ry A d d re s s (M A ) D a ta (M A ) D a ta (M A ) D a ta (M A + 1 ) D a ta (M A + 1 ) D a ta (M A + 2 )

Command Mode (Command Code : 1 0 0)

CS

WR

D ATA

1 0 0 C8 C7 C6 C5 C4 C3 C2 C1 C0

C8 C7 C6 C5 C4 C3 C2 C1 C0

C om m and 1

C o m m a n d ...

C om m and i

C om m and

or

D a ta M o d e

Mode (Data And Command Mode)

CS

WR

D ATA

C om m and

or

A d d re s s & D a ta

D a ta M o d e

C om m and

or

A d d re s s a n d D a ta

D a ta M o d e

C om m and

or

A d d re s s a n d D a ta

D a ta M o d e

RD

Note: It is recommended that the host controller should read in the data from the DATA line between the rising edge

of the RD line and the falling edge of the next RD line.

Rev. 1.30

11

August 6, 2003

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