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參數(shù)資料
| 型號(hào)： | M34552G8FP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48 |
| 文件頁(yè)數(shù)： | 43/143頁(yè) |
| 文件大?。?/td> | 0K |
| 代理商： | M34552G8FP |
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15: POWER SAVE MODES
S1D13505F00A HARDWARE FUNCTIONAL
EPSON
1-125
SPECIFICATION (X23A-A-001-12)
15 POWER SAVE MODES
Three power save modes are incorporated into the S1D13505 to meet the important need for power
reduction in the hand-held device market.
1. Refresh method is selectable by REG[1Ah]. Supported methods are CBR refresh, self-refresh or
no refresh at all.
2. The FPFRAME and FPLINE signals are set to their inactive states during power-down. The inac-
tive states are determined by REG[07h] bit 6 and REG[0Ch] bit 6. A problem may occur if the
inactive state is high (typical TFT/D-TFD conguration) and power is removed from the LCD
panel.
For software suspend the problem can be solved in the following manner. At power-down, rst
enable software suspend, then wait ~120 VNDP, and lastly reverse the polarity bits. At power-up,
rst disable software suspend, then revert the polarity bits back to the conguration state.
For hardware suspend an external hardware solution would be to use an AND gate on the sync
signal. One input of the AND gate is connected to a sync signal, the other input would be tied to
the panel’s logic power supply. When the panel’s logic power supply is removed, the sync signal
is forced low.
Table 15-1 Power Save Mode Function Summary
Function
Power Save Mode (PSM)
Normal
(Active)
No Display
LCD Enable = 0
CRT Enable = 0
Software Suspend Hardware Suspend
Display Active?
Yes
No
Register Access Possible?
Yes
No
Memory Access Possible?
Yes
No
LUT Access Possible?
Yes
No
Table 15-2 Pin States in Power-Save Modes
Pins
Pin State
Normal
(Active)
No Display
LCD Enable = 0
CRT Enable = 0
Software Suspend Hardware Suspend
LCD outputs
Active
(LCD Enable = 1)
Forced Low2
LCDPWR
On
(LCD Enable = 1)
Off
DRAM outputs
Active
CBR Refresh only
Refresh only1
CRT/DAC outputs
Active
(CRT Enable = 1)
Disabled
Host Interface outputs
Active
Disabled
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M34552M8H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34552G8HFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34556G8HFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| M34556M8-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| M34556M8H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34552G8HFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34552M4H-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34552M4-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34552M8H-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34552M8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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