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ST7625 bảng dữ liệu(PDF) 17 Page - Sitronix Technology Co., Ltd.

tên linh kiện ST7625
Giải thích chi tiết về linh kiện  65K Color Dot Matrix LCD Controller/Driver
PDF  160 Pages
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nhà sản xuất  SITRONIX [Sitronix Technology Co., Ltd.]
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ST7625 bảng dữ liệu(HTML) 17 Page - Sitronix Technology Co., Ltd.

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ST7625
Ver 1.6
17/160
2008/07
7. FUNCTIONAL DESCRIPTION
7.1 MICROPROCESSOR INTERFACE
Chip Select Input
/CS pin is chip selection. The ST7625 is active when /CS=L. In serial interface mode, the internal shift register and the
counter are reset when /CS=H.
7.1.1
Selecting Parallel / Serial Interface
ST7625 has six types of interface with an MPU, which are two serial and four parallel interfaces. The parallel or serial
interface is determined by IF pin as shown in Table 7.1.1.
Table 7.1.1 Parallel / Serial Interface Mode
I/F Mode
Pin Assignment
IF1
IF2
IF3
I/F Description
/CS
A0
E_RD
RW_WR
D15 to D8
D7 to D2
D0
D1
H
H
H
80 serial 16-bit parallel
/CS
A0
/RD
/WR
D15 ~ D8
D7 ~ D2
D0
D1
H
H
L
80 serial 8-bit parallel
/CS
A0
/RD
/WR
--
D7 ~ D2
D0
D1
H
L
L
68 serial 16-bit parallel
/CS
A0
E
R/W
D15 ~ D8
D7 ~ D2
D0
D1
L
H
H
68 serial 8-bit parallel
/CS
A0
E
R/W
--
D7 ~ D2
D0
D1
L
L
L
8-bit SPI mode (4 line)
/CS
SCL
--
--
--
--
SI
A0
L
L
H
9-bit SPI mode (3 line)
/CS
SCL
--
--
--
--
SI
--
NOTE: When these pins are set to any other combination, A0, E_RD and RW_WR inputs are disabled and D0 to D15 are
high impedance.
7.1.2
8-bit or 16-bit Parallel Interface
The ST7625 identifies the type of the data bus signals according to the combination of A0, /RD (E) and /WR (W/R) signals,
as shown in Table 7.1.2.
Table 7.1.2 Parallel Data Transfer
Common
6800-series
8080-series
A0
R/W
E
/WR
/RD
Description
H
H
↑
H
↓
Display data read out
H
H
↑
H
↓
Register status read
L
L
↓
↑
H
Insturction write
H
L
↓
↑
H
Display data write



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