Chapter 17
LCD
XVII - 34
LCD Display Examples
17.4.6
LCD Operation Setup (1/3 duty)
The following example is to display "23" on a 8-segment type LCD panel (two-digit display) through segment
pins, SEG0 to SEG5 and common pins, COM0 to COM2 with 1/3 duty and 1/3 bias, supplied from external volt-
age divider.
The specific settings are as follows;
HCLK: 4 MHz, LCD display clock: HCLK/2
15
(122 Hz), Frame frequency: 41 Hz
Setup Procedure
Description
(1) Stop the LCD.
LCDMD2 (0x03E82)
bp7: LCEN = 0
(1) Stop the LCD.
(2) Set a display duty.
LCDMD2 (0x03E82)
bp2-0: LCDDTY2-0 = 010
(2) Set the operation mode to 1/3 duty driving.
(3) Set an LCD clock.
LCDMD3 (0x03E83)
bp6-3: LCCK3-0 = 0100
bp2-0: LCCKS2-0 = 101
(3) Select "HCLK/2
15
" as an LCD clock source.
(4) Set Segment and common output pins.
LCCTR0 (0x03E86)
bp7-4: SEGSL3-0 = 1111
bp2-0: COMSL2-0 = 111
LCCTR1 (0x03E87)
bp3-0: SEGSL7-4 = 1111
LCDSEL (0x03E8E)
bp3-0: COMSL7-4 = 0000
(4) Select SEG0-5 and COM0-2 pins.
(5) Set LCD panel display data.
LCDATA0 (0x03E90) = 0x06
LCDATA1 (0x03E91) = 0x07
LCDATA2 (0x03E92) = 0x00
LCDATA3 (0x03E93) = 0x04
LCDATA4 (0x03E94) = 0x07
LCDATA5 (0x03E95) = 0x02
(5) Set the display data "23" on the segment output latch.
(6) Activate the LCD.
LCDMD2 (0x03E82)
bp7: LCEN = 1
(6) Start the LCD.
Summary of Contents for MN101L Series
Page 1: ...Cover MICROCOMPUTER MN101L MN101LR05D 04D 03D 02D LSI User s Manual Pub No 21705 015E ...
Page 2: ......
Page 8: ......
Page 10: ......
Page 11: ...Contents Contents 0 ...
Page 22: ... Contents 11 ...
Page 23: ...I Chapter 1 Overview 1 ...
Page 62: ...Chapter 1 Overview I 40 Cautions for Circuit Setup ...
Page 63: ...II Chapter 2 CPU 2 ...
Page 94: ...Chapter 2 CPU II 32 Reset ...
Page 95: ...III Chapter 3 Interrupts 3 ...
Page 143: ...IV Chapter 4 Clock Mode Voltage Control 4 ...
Page 175: ...V Chapter 5 Watchdog Timer WDT 5 ...
Page 180: ...Chapter 5 Watchdog Timer WDT V 6 Operation ...
Page 181: ...VI Chapter 6 Power Supply Voltage Detection 6 ...
Page 189: ...VII Chapter 7 I O Port 7 ...
Page 248: ...Chapter 7 I O Port VII 60 Port 8 ...
Page 249: ...VIII Chapter 8 8 bit Timer 8 ...
Page 282: ...Chapter 8 8 bit Timer VIII 34 8 bit Timer Cascade Connection ...
Page 283: ...IX Chapter 9 16 bit Timer 9 ...
Page 346: ...Chapter 9 16 bit Timer IX 64 IGBT Output with Dead Time ...
Page 347: ...X Chapter 10 General Purpose Time Base Free Running Timer 10 ...
Page 361: ...XI Chapter 11 RTC Time Base Timer RTC TBT 11 ...
Page 371: ...XII Chapter 12 Real Time Clock RTC 12 ...
Page 389: ...XIII Chapter 13 Serial Interface 13 ...
Page 458: ...Chapter 13 Serial Interface XIII 70 IIC Communication ...
Page 459: ...XIV Chapter 14 DMA Controller 14 ...
Page 472: ...Chapter 14 DMA Controller XIV 14 DMA Data Transfer ...
Page 473: ...XV Chapter 15 Buzzer 15 ...
Page 479: ...XVI Chapter 16 A D Converter ADC 16 ...
Page 493: ...XVII Chapter 17 LCD 17 ...
Page 530: ...Chapter 17 LCD XVII 38 LCD Display Examples ...
Page 531: ...XVIII Chapter 18 ReRAM 18 ...
Page 538: ...Chapter 18 ReRAM XVIII 8 Command Library ...
Page 539: ...XIX Chapter 19 On Board Debugger 19 ...
Page 542: ...Chapter 19 On Board Debugger XIX 4 List of on board debugging functions ...
Page 543: ...XX Chapter 20 Appendix 20 ...