HT1670 Ver la hoja de datos (PDF) - Holtek Semiconductor

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componentes Descripción

Lista de partido

HT1670

128x32 LCD Controller for I/O MCU

Holtek Semiconductor 

PATENTED

Command Mode (Command ID Code: 1 0 0)

CS

HT1670

WR

RD

DB3

X C7 C3 X X

DB2

1 C6 C2 X X

DB1

0 C5 C1 X X

DB0

0 C4 C0 X X

X C7 C3 X X C7 C3 X X C7 C3 X X C7 C3 X X C7 C3

1 C6 C2 X X C6 C2 X X C6 C2 X X C6 C2 X X C6 C2

0 C5 C1 X X C5 C1 X X C5 C1 X X C5 C1 X X C5 C1

0 C4 C0 X X C4 C0 X X C4 C0 X X C4 C0 X X C4 C0

( S in g le c o m m a n d )

Note: ²X² stands for don¢t care

Application Circuits

Host Controller With an HT1670 Display System

( S u c c e s s iv e c o m m a n d )

M CU

C lo c k O u t

E x te r n a l C lo c k 1 ( 3 2 k H z )

E x te r n a l C lo c k 2 ( 3 2 k H z )

O n - c h ip O S C

C ry s ta l

32768H z

CS

*

RD

WR

D B 0~D B 3

*R

IR Q

O SCI

H T1670

M ax.

7V

V LC D

BZ

BZ

*V R

P ie z o

O S C O C O M 0 ~ C O M 31 S E G 0~S E G 127

* 1 /6 B ia s o r 1 /5 B ia s ,

1 /3 2 D u ty o r 1 /1 6 D u ty

* LC D P anel

*Note: The connection of IRQ and RD pin can be selected depending on the MCU.

Adjust VR to fit LCD display

Adjust R (external pull-high resistance) to fit user¢s time base clock.

It is recommended that the internal equivalent capacitance between SEG and COM of LCD panel should be

lower than 10pF. (LCR meter test condition: frequency in 1kHz)

Rev. 1.60

15

November 9, 2010

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