ST7920 - Topwaydisplay.com
ST7920 - Topwaydisplay.com
ST7920 - Topwaydisplay.com
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<strong>ST7920</strong><br />
系 統 方 塊 圖<br />
PSB<br />
Reset<br />
Circuit<br />
RESI RESO CL1<br />
CL2<br />
M<br />
CLK<br />
Timing<br />
Generator<br />
DOUT<br />
RS<br />
RW<br />
E<br />
DB4 to<br />
DB7<br />
DB0 to<br />
DB3<br />
MPU<br />
Interface<br />
Input/<br />
Output<br />
Buffer<br />
Instruction<br />
Register (IR)<br />
Instruction<br />
Decoder<br />
Data<br />
Register<br />
(DR)<br />
Address<br />
Counter<br />
Display<br />
Data RAM<br />
(DDRAM)<br />
60 x 16 bits<br />
64-bit<br />
shift<br />
register<br />
33/49-b<br />
it shift<br />
register<br />
64-bit<br />
latch<br />
circuit<br />
Common<br />
Signal<br />
Driver<br />
Segment<br />
Signal<br />
Driver<br />
LCD Drive<br />
Voltage<br />
Selector<br />
COM1 to<br />
COM33<br />
SEG1 to<br />
SEG64<br />
Busy<br />
Flag<br />
Graphic<br />
RAM<br />
(GRAM)<br />
1024 x 16<br />
bits<br />
Half size<br />
Character<br />
ROM<br />
(HCGROM)<br />
1024x16 bits<br />
Character<br />
Generator<br />
RAM<br />
(CGRAM)<br />
1024 bits<br />
Character<br />
Generator<br />
ROM<br />
(CGROM)<br />
2M bits<br />
Cursor<br />
Blink<br />
Scroll<br />
Controller<br />
Vss<br />
Parallel/Serial converter<br />
and<br />
Attribute Circuit<br />
VDD<br />
XRESET<br />
V0 V1 V2 V3 V4<br />
XOFF<br />
C3.0 3/47 2002/10/11
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