Datasheet

DEM 128064B SYH-PY Product Specification

Version:4.1.1 PAGE:11

9. DISPLAY CONTROL INSTRUCTION

Registers and their states after hardware RESET

The SBN0064G has 5 registers. Four of them must be programmed by the host microcontroller after hardware reset. The

Status Register can be read by the host microcontroller to check the current status of the SBN0064G.

The registers and their states after RESET is given in Table 5.

Table 1 Registers and their states after RESET

RESET

Display ON/OFF Register

The Display ON/OFF Register is a 1-bit register. After RESET,

its value is LOW and, therefore, the LCD display is turned OFF.

The Display Start Line Register is a 6-bit register. After RESET,

Display Start Line Register its value is 00 0000 and, therefore, Row 0 of the Display Data 00 0000

Memory is mapped to COM0 of LCD panel.

Page Address Register

The Page Address Register is a 3-bit register. It point to a page

of the Display Data Memory.

xxx

Column Address Register The Column Address Register is a 6-bit register. xx xxxx

The Status Register shows the current state of the SBN0064G.

Status Register It is a 3-bit register, with each bit showing the status of a 0010 0000

programmed function.

9-1.Display ON/OFF and the Display ON/OFF Register

Table 2 Setting of the control bus for programming the Display ON/OFF Register

C/D R/W

0 0

Table 3 Setting of the data bus for programming the Display ON/OFF Register

D7(MSB) D6 D5 D4 D3 D2 D1 D0(LSB)

0 0 1 1 1 1 1 D0

When D0=1, the code is 3F(Hex) and the display is turned ON. When D0=0, the code is 3E(Hex) and the display is turned

OFF.

9-2. Display Start Line and the Display Start Line Register

Table 4 The setting of the control bus for programming the Display Start Line Register

C/D R/W

0 0

Table 5 The setting of the data bus for programming the Display Start Line Register

D7(MSB) D6 D5 D4 D3 D2 D1 D0(LSB)

1 1 A5 A4 A3 A2 A1 A0

A5 ~ A0 are Display Start Line address bits and can be programmed with a value in the range from 0 to 63. Therefore,

the code can be from 1100 0000 (C0 Hex) to 1111 1111 (FF Hex).