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ST7036 датащи(PDF) 43 Page - Sitronix Technology Co., Ltd.

номер детали ST7036
подробное описание детали  Dot Matrix LCD Controller/Driver
PDF  70 Pages
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производитель  SITRONIX [Sitronix Technology Co., Ltd.]
домашняя страница  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7036 датащи(HTML) 43 Page - Sitronix Technology Co., Ltd.

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ST7036
V1.7a
2007/10/17
43/70
Interfacing to the MPU
The ST7036 can send data in two 4-bit operations/one 8-bit operation, serial 1 bit operation or fast I
2C operation,
thus allowing interfacing with 4-bit, 8-bit or I
2C MPU.
For 4-bit interface data, only four bus lines (DB4 to DB7) are used for transfer. Bus lines DB0 to DB3
are disabled. The data transfer between the ST7036 and the MPU is completed after the 4-bit data has been
transferred twice. As for the order of data transfer, the four high order bits (for 8-bit operation, DB4 to DB7)
are transferred before the four low order bits (for 8-bit operation, DB0 to DB3). The busy flag must be
checked (one instruction) after the 4-bit data has been transferred twice. Two more 4-bit operations then
transfer the busy flag and address counter data.
Example of busy flag check timing sequence
Intel 8051 interface(4 Bit)
Functioning
DB7
Internal
operation
E
R/W
RS
Busy flag check
Busy flag check
Instruction write
Instruction write
IR7
IR3
AC3
Not
Busy
AC3
IR3
IR7
CSB
P1.0 to P1.3
P3.0
P3.1
P3.2
RS
R/W
E
DB4 to DB7
COM1 to
COM16/24
SEG1 to
SEG100/80
100/80
16/24
Intel 8051 Serial
ST7036
4
P3.3
CSB



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