HT16515(2003) データシートの表示（PDF） - Holtek Semiconductor

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HT16515
(Rev.:2003)

1/4 to 1/12 Duty VFD Controller

Holtek Semiconductor 

· Data setting commands

These commands set the data write and data read modes.

M SB

01

LS B

b3 b2 b1 b0

D o n 't c a r e

S e ts d a ta w r ite a n d r e a d m o d e

0 0 : W r ite d a ta to d is p la y m e m o r y

0 1 : W r ite d a ta to L E D p o r t

1 0 : R e a d k e y d a ta

1 1 : D o n 't c a r e

A d d r e s s in c r e m e n t m o d e s e ttin g s ( d is p la y m e m o r y )

0 : In c r e m e n ts a d d r e s s a fte r d a ta h a s b e e n w r itte n

1 : F ix e s a d d r e s s

T e s t m o d e s e ttin g s

0 : N o rm a l m o d e

1 : T e s t m o d e , u s e r d o n 't u s e

Note: power-on status: normal mode operation and address increment mode are set.

HT16515

· Address setting commands

These commands set the address of the display memory.

M SB

11

LS B

b5 b4 b3 b2 b1 b0

A d d re s s (0 0 H ~ 2 3 H )

If address 24H or higher is set, data is ignored until a valid address is set.

Note: power-on status: the address is set to 00H.

· Display control commands

M SB

10

LS B

b3 b2 b1 b0

D o n 't c a r e

S e ts d im m in g q u a n tity

0 0 0 : S e t p u ls e w id th to 1 /1 6

0 0 1 : S e t p u ls e w id th to 2 /1 6

0 1 0 : S e t p u ls e w id th to 4 /1 6

0 1 1 : S e t p u ls e w id th to 1 0 /1 6

1 0 0 : S e t p u ls e w id th to 1 1 /1 6

1 0 1 : S e t p u ls e w id th to 1 2 /1 6

1 1 0 : S e t p u ls e w id th to 1 3 /1 6

1 1 1 : S e t p u ls e w id th to 1 4 /1 6

T u r n s o n /o ff d is p la y

0 : D is p la y o ff ( k e y s c a n c o n tin u e s )

1 : D is p la y o n

Note: power-on status: 1/16 pulse width is set and the display is turned off. Key scanning will be stopped during

power-on status.

Rev. 1.00

7

December 19, 2003

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