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参数资料
| 型号： | SED1225DAB |
| 元件分类： | 显示控制器 |
| 英文描述： | 24 X 60 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC171 |
| 封装： | DIE-171 |
| 文件页数： | 2/39页 |
| 文件大小： | 330K |
| 代理商： | SED1225DAB |
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5–10
EPSON
SED1225 Series
Figure 1
Data bus signal identification
The SED1225 identifies the data bus based on a
combination of A0, AWR and E signals as defined on
Table 3.
Table 3
Chip Select
The SED1225 has an Chip Select pin (XCS) to allow an
MPU interface input only if XCS=low.
During no chip select status, all of D0 to D7, A0, XWR,
SI and SCL inputs are made invalid. If the serial input
interface is selected, the shift register and counter are
reset.
However, the Reset signal is entered independent from
the XCS status.
Power Circuit
The built-in power circuit featuring the low power
consumption generates the required LCD drive voltages.
The power circuit consists of an amp and a voltage
regulator.
Amp
When the capacitors are connected to the OCA, OCB,
OCC, OCD, OCE, VREG2 pins, the LCD drive voltages
are generated.
As the amp uses the signals from the oscillator, the
oscillator or an external clock must be operating.
The following provides the potential relationship.
SCL
1
A0
SI
XCS
D7
D6
D5
D4
D3
D2
D1
D0
D7
23
456
78
A0
1
Common 68 Series 80 Series
Function
A0
E
XWR
1
0
Writes in the RAM and symbol register.
0
1
0
Writes (commands) in the internal register.
LEC drive voltages
V0 = VDD
V1
V2, V3
V4
V5
VREG2
V5 = 4 x VREG2
Voltage
drop
Voltage rise
VDD = 0V
VSS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SED1278 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CMOS DOT MATRIX LCD CONTROLLER DRIVER |
| SED1278D | 制造商:EPSON 制造商全称:EPSON 功能描述:Dot Matrix LCD Controller Driver |
| SED1278D0A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CMOS DOT MATRIX LCD CONTROLLER DRIVER |
| SED1278D0B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CMOS DOT MATRIX LCD CONTROLLER DRIVER |
| SED1278D0C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CMOS DOT MATRIX LCD CONTROLLER DRIVER |
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