HD66727 Datasheet, PDF(24/97 Page) Hitachi Semiconductor – Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

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HD66727 Datasheet, PDF (24/97 Pages) Hitachi Semiconductor – Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

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HD66727

Table 11 Correspondence between Annunciator Display Addresses (AAN) and Driver Signals

AAN Address

Annunciator Segment Signals

Common

MSB

LSB D7

Signal

0 0 00

ASEG1

ASEG2

ASEG3

ASEG4

ACOM

0 0 0 0 Blink Data Blink Data Blink Data Blink Data ACOM

0 0 01

ASEG5

ASEG6

ASEG7

ASEG8

ACOM

0 0 0 1 Blink Data Blink Data Blink Data Blink Data ACOM

0 0 10

ASEG9

ASEG10

ASEG11

ASEG12 ACOM

0 0 1 0 Blink Data Blink Data Blink Data Blink Data ACOM

Notes: 1. The annunciator is turned on when the corresponding even bit (data) is 1, and is turned off when

2. The turned-on annunciator blinks when the corresponding odd bit (blink) is 1. Blinking is provided

by repeatedly turning on the annunciator for 32 frames and then turning it off for the next 32

frames.

Table 12 Correspondence between LED Driving Port Addresses (AAN) and Driver Signals

AAN Address

LED Driving and General Output Port

MSB

LSB D7

0 0 11 *

Port2 Port1 Port0 LED2 LED1 LED0

General output port

LED driving port

Notes: 1. The LED bits are inverted and output from each LED pin. If 0 is set, the VCC level is output from

the LED pin. If 1 is set, the GND level is output from the LED pin.

2. The port bits output from each port pin. If 0 is set, the GND level is output from the PORT pin. If

1 is set, the VCC level is output from the PORT pin.

3. Current cannot be driven for outputs of the VCC level in LED2âLED0 and the VCC and GND levels

in PORT2âPORT0.

4. The upper two bits (D7 and D6) are invalid.

Table 13 Correspondence between SEG/COM Addresses (AAN) and Driver Signals

AAN Address

Shift Direction of SEG/COM Driver

MSB

LSB D7

0 1 00 *

CMS SGS

Notes: 1. If CMS = 0, COM1/32 is the first line of the first column, and COM32/1 is the 8th line of the fourth

column. If CMS = 1, COM1/32 is the 8th line of the fourth column, and COM32/1 is the first line

of the first column. If CMS = 0, COMS1/2 is COMS1, and COMS2/1 is COM2.

2. If SGS = 0, SEG1/60 is SEG1 in the left of the display, and SEG60/1 is SEG60 in the right of the

display. If SGS = 1, the shift direction of the SEG is reversed.

3. The upper six bits (D7âD2) are invalid.

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