參數(shù)資料
型號(hào): M38D58G8HP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PQFP80
封裝: 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件頁數(shù): 36/142頁
文件大?。?/td> 2004K
代理商: M38D58G8HP
Rev.3.04
May 20, 2008
Page 130 of 134
REJ03B0158-0304
38D5 Group
Notes on LCD Drive Control Circuit
1. Multiplier Circuit
When the multiplier circuit is used, set the multiplier circuit
control bit to “1” (multiplier circuit enabled) after applying a
voltage from 1.3 V or more to 2.1 V or less to the VL1 pin.
When the multiplier circuit is not used, set the VL3 connection bit
to “1” (open) and apply an appropriate voltage to the LCD power
source input pins (VL1 to VL3). When the VL3 connection bit is
set open, the VL3 pin is placed in the high impedance state.
When the multiplier circuit is used, set the LCDCK frequency to
100 Hz or more. The on-chip oscillator cannot be used as
LCDCK.
In a system where the multiplier circuit is used (a multiplier
capacitor is externally connected between the C1 and C2 pins),
set the multiplier circuit control bit to “1” (multiplier circuit
enabled) before executing the STP or WIT instruction.
2. Setting Data to LCD Display RAM
To write data to the LCD display RAM when the LCD enable bit
is set to “1” and while LCD is turned on, set fixed data.
Rewriting with temporary data may cause LCD to flicker. The
following shows a processing example to write data to the LCD
display RAM while LCD is turned on.
Fig. 105 Processing example when writing data to LCD display RAM While LCD Turned On
(1) Correct processing
LCD
on
LCD
on or
off
*Content at address 084016: “FF16
Off
On
Set LCD display RAM data
LRAM0 (address 084016)
← “FF16
LCD on or off?
Set LCD display RAM data
LRAM0 (address 084016)
←“0016
Set fixed data to LCD display RAM
(2) Incorrect processing
LCD
on
LCD
on or
off
*Content at address 084016: “FF16
Off
On
Set LCD display RAM data
LRAM0 (address 084016)
← “FF16
LCD on or off?
Set LCD display RAM data
LRAM0 (address 084016)
← “0016
Set off data to LCD display RAM
LCD
off
Set fixed data to LCD display RAM
相關(guān)PDF資料
PDF描述
M38D59GFFP 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PQFP80
M38D59FFHP 8-BIT, FLASH, 6.25 MHz, MICROCONTROLLER, PQFP80
M38D59GCFP 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PQFP80
M38D58G8-XXXHP 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PQFP80
M38D59FFFP 8-BIT, FLASH, 6.25 MHz, MICROCONTROLLER, PQFP80
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