NJU6676CH 데이터 시트보기 (PDF) - Japan Radio Corporation

부품명

상세내역

일치하는 목록

NJU6676CH

64-Common X 132-Segment plus 1-Icon Bit Map Type LCD Controller and Driver

Japan Radio Corporation  

(1-7) Common direction register

The common direction register specifies common driver’s scanning direction.

NJU6676

PRELIMINARY

Register

A3

0

1

PAD No.

Pin name

Common drivers

108

77

C0 ------------------------------ C31

COM0 ------------------ COM31

COM63 ----------------- COM32

275

244

C63 ---------------------------- C32

COM63 ----------------- COM32

COM0 ------------------ COM31

(1-8) Reset circuit

The reset circuit initializes the LSI to the following status by using of the reset signal into the RES

terminal.

Reset status using the RES terminal:

1. LCD Driver Set off

2. Display off

3. Normal Display (Non-inverse display)

4. ADC select : Normal mode (D0=0)

5. Power control register clear

6. Serial interface register clear

7. LCD bias select

: 1/9 bias

8. Read modify write off

9. Static indicator off

10. Initial display line address

: (00)H

11. Column address : (00)H

12. Page address

: (0) page

13. Common direction register : Normal mode (D3=0)

14. EVR mode off and EVR register

: (20)H

15. Test mode off

16. Entire display off : Normal mode

The RES terminal should be connected to MPU’s reset terminal, and the reset operation should be

executed at the same timing of the MPU reset.

As described in the “DC characteristics”, it is necessary to input 10us or over “L” level signal into the

RES terminal in order to carry out the reset operation. The LSI will return to normal operation after

about 1us from the rising edge of the rest signal.

In case of using external power supply for LCD driving voltage, the RES terminal is required to be

being “L” level when the external power supply is turned-on.

The “Reset” instruction in Table.4 can’t be substituted for the reset operation by using of the RES

terminal. It executes above-mentioned only 8 to 16 items.

(1-9) LCD display circuits

a) Common and segment drivers

LCD drivers consist of 64-common drivers, 132-segment divers and 1-icon-common driver.

As shown in Fig.7, LCD driving waveforms are generated by the combination of display data,

common timing signal and internal FR timing signal.

Share Link: