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| 型號： | ST6245BQ1 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DRAM |
| 英文描述： | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| 中文描述： | 該CAT24FC02是一個2 KB的EEPROM的國內(nèi)256個8位每字舉辦的串行CMOS |
| 文件頁數(shù)： | 48/72頁 |
| 文件大小： | 514K |
| 代理商： | ST6245BQ1 |
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ST62T45B/E45B
4.5 LCD CONTROLLER-DRIVER
On-chip LCD driver includes all features required
for LCD driving, including multiplexing of the com-
mon plates. Multiplexing allows to increase dis-
play capability without increasing the number of
segment outputs. In that case, the display capabil-
ity is equal to the product of the number of com-
mon plates with the number of segment outputs.
A dedicated LCD RAM is used to store the pattern
to be displayed while control logic generates ac-
cordingly all the waveforms sent onto the segment
or common outputs. Segments voltage supply is
MCU supply independant, and included driving
stages allow direct connection to the LCD panel.
The multiplexing ratio (Number of common plates)
and the base LCD frame frequency is software
configurable to achieve the best trade-off con-
trast/display capability for each display panel.
The 32Khz clock used for the LCD controller is
derivated from the MCU’s internal clock and there-
fore does not require a dedicated oscillator. The
division factor is set by the three bits HF0..HF2 of
the LCD Mode Control Register LCDCR as sum-
marized in Table 17 for recommanded oscillator
quartz values. In case of oscillator failure, all seg-
ment and common lines are switched to ground to
avoid any DC biasing of the LCD elements.
Table 17. Oscillator Selection Bits
Notes
:
1.
defined in this table cause the LCD to operate at a
reference frequency different from 32.768kHz, ac-
cording to division factor ofTable 17.
2.
It is not recommended to select an internal
frequency lower than 32.768kHz as the clock su-
pervisor circuit may switch off the LCD peripheral
if lower frequency is detected.
The usage f
values different from those
Figure 26. LCD Block Diagram
MCU
Oscillator
f
OSC
HF2 HF1 HF0
Division Factor
0
0
1
1
1
0
1
0
0
1
0
1
0
1
0
Clockdisabled: Display off
32
64
128
256
1.048MHz
2.097MHz
4.194MHz
8.388MHz
DATA BUS
CONTROL
REGISTER
LCD
RAM
SEGMENT
DRIVER
COMMON
DRIVER
VOLTAGE
DIVIDER
CONTROLLER
CLOCK
SELECTION
VLCD
1/3
VLCD VLCD
2/3
BACKPLANES
SEGMENTS
f
int
OSC 32kHz
(When available)
VR02099
32kHz
47
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| ST6245BQ6 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST6245BQ1/XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| ST6245BQ6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT OTP/EPROM MCU WITH LCD DRIVER, EEPROM AND A/D CONVERTER |
| ST6245BQ6/XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| ST6245-P/QFP | 功能描述:插座和適配器 ST62 P/QFP Adaptor RoHS:否 制造商:Silicon Labs 產(chǎn)品:Adapter 用于:EM35x |
| ST6245Q1/XX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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