STE2004S datasheet(44/79 Pages) STMICROELECTRONICS

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Instruction set

STE2004S

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Instruction set

Two different instructions formats are provided:

–With D/C set to LOW : commands are sent to the control circuitry.

–With D/C set to HIGH : the data RAM is addressed.

Two different instruction sets are embedded: the STE2001-like instruction set and the

extended instruction set. To select the STE2001-like instruction set, the EXT pad must be

connected to a logic LOW (connect to GND). To select the extended instruction set, the EXT

pad must be connected to a logic HIGH (connect to VDD1).

The instruction syntax is summarized in

Table 8. (basic-set) and Table 9. (extended set).

Table 8. STE2001/2-like instruction set

Instruction

D/C

R/W

Description

H=0 or H=1

Read command

000

0000

000

Read I2C address or

status byte

(with 3-lines serial and

4-lines SPI only)

Function set

000

H[0]

Power down

management; entry

mode;

Status byte

BSY

(I2C interface only)

ID code

010

0111

ID1

ID0

Write data

D6D5D4D3D2D1D0

Writes data to RAM

H=0

Memory blank

000

0000

001

Starts memory blank

procedure

Scroll

000

0000

DIR

Scrolls by one row up

or down

VLCD range setting

000

0000

PRS[

VLDC programming

range selection

Display control

000

0001

Select display

configuration

Set CP factor

000

0010

Charge pump

multiplication factor

Set RAM Y

Set horizontal (Y)

RAM address

Set RAM X

Set vertical (X) RAM

address

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