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ST7033 Datasheet(PDF) 10 Page - Sitronix Technology Co., Ltd.

No. de pieza ST7033
Descripción Electrónicos  4 x 96 Dot Matrix LCD Controller/Driver
Download  39 Pages
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Fabricante Electrónico  SITRONIX [Sitronix Technology Co., Ltd.]
Página de inicio  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7033 Datasheet(HTML) 10 Page - Sitronix Technology Co., Ltd.

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ST7033
Ver 1.1
10/39
2009/07/17
7. FUNCTIONS DESCRIPTION
MICROPROCESSOR INTERFACE
Chip Select Input
There is /CSB pin for chip selection. The ST7033 can interface with an MPU when /CSB is "L". When /CSB is “H”, the
internal shift register and the counter are reset.
Parallel / Serial Interface
ST7033 has five types of interface with an MPU, which are three serial and two parallel interfaces. This parallel or serial
interface is determined by PS [1:0] pin as shown in Table 1.
PS1
PS0
/CSB
A0
State
H
H
/CSB
A0
8080-series parallel MPU interface
H
L
/CSB
A0
6800-series parallel MPU interface
L
H
/CSB
A0
4 Pin-SPI MPU interface
L
L
/CSB
" * "
3 Pin-SPI MPU interface
Table 1. Parallel/Serial Interface Mode
Parallel Interface
The 8-bit bi-directional data bus is used in parallel interface and the type of MPU is selected by PS1~PS0 as shown in
Table 2. The type of data transfer is determined by signals at A0, /RD (E) and /WR(R/W) as shown in Table 3.
PS1
PS0
/CSB
A0
/RD (E) /WR (R/W)
DB0 to DB7
MPU bus
H
H
/CSB
A0
/RD
/WR
DB0 to DB7
8080-series
H
L
/CSB
A0
E
R/W
DB0 to DB7
6800-series
Table 2. Microprocessor Selection for Parallel Interface
Common
6800-series
8080-series
A0
E
R/W
/RD
/WR
Description
H
H
H
L
H
Display data read out
H
H
L
H
L
Display data write
L
H
H
L
H
Register status read
L
H
L
H
L
Writes to internal register (instruction)
Table 3. Parallel Data Transfer
NOTE: By fixing /RD (E) pin at high (VDD1) in 6800-series interface mode, /CSB can be used as enable signal. In this case,
interface data is latched at the rising edge of /CSB and the access type is determined by signals on A0, /WR(R/W) just
same as 6800-series mode.


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