HT82R732 datasheet(49/74 Pages) HOLTEK

49 / 74 page

The accompanying LCD Memory Map diagrams shows how the internal LCD Memory is mapped to

the Segments and Commons of the display for the devices. LCD Memory Maps for devices with

smaller memory capacities can be extrapolated from these diagrams.

LCD Registers

Control Registers in the Data Memory, are used to control the various setup features of the LCD

Driver.

There is one control register for the LCD function, LCDC.

Various bits in this registers control functions such as bias type as well as overall LCD enable and

disable. The LCDEN bit in the LCDC register, which provides the overall LCD enable/disable

function, will be effective when the device is in the Normal or HALT Mode. The LCDWT bit in the

same register is used to select whether Type A or Type B LCD control signals are used. The register,

SEGC is used to determine if the output function of display pins SEG0~SEG7 are used as segment

drivers or I/O functions.

Clock Source

The LCD clock source is the LXT Oscillator divided by 8 to generate an ideal LCD clock source

frequency of 4kHz.

HT82R732

e-Banking 8-Bit OTP MCU

Rev. 1.00

October 31, 2013

4 0 H

5 7 H

b 7

b 6

b 5

b 4

b 3

b 2

b 1

b 0

S E G 0

S E G 2 3

4 1 H

S E G 1

5 6 H

S E G 2 2

: U n u s e d r e a d a s " 0 "

LCD Memory Map

L X T

D i v i d e b y 8

4 k H z f o r L C D c l o c k

HT82R732 데이터시트(PDF) 49 Page - Holtek Semiconductor Inc