LC587004 Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LC587004

Single-Chip 4-Bit Microprocessors with LCD Driver, 2 Kb RAM, and 8, 12, or 16 KB ROM on chip

SANYO -> Panasonic 

LC587008, 587006, 587004

Continued from preceding page.

Symbol R/W

Function

Serial counter

The serial counter is an 8-bit shift register.

Reading and writing the lower 4 bits of the serial counter is performed through a RAM location.

Reading and writing the upper 4 bits of the serial counter is performed using the B register.

SIO

R/W

Initialization

value at reset

Undefined

ROM page flags

The ROM page flags consist of 2 bits that allow ROM to be expanded in 2048 16-bit pages to a total of 8063 16-bit

OPG

R/W

locations.

In the LC587004 the legal values are 0 and 1, in the LC587006 the legal values are 0 to 2 and in the LC587008 the

00H

legal values are 0 to 3.

(The operation when an illegal value is used is undefined.)

Status register 1 (STS1)

Status register 1 is a 4-bit register whose bits are used as shown below.

STS1

R/O

00H

Status register 2 (STS2)

Status register 2 is a 4-bit register that is used for serial counter control and state confirmation.

STS2

R/W

ICF: High when the internal clock is used

OSELF: High when the SO2 pin is set to the high impedance state (Z).

Low when SO2 is set to the CMOS or n-channel open drain state.

SIOF: High when used as serial I/O

CSTF: High on serial counter start

Low during serial counter operation

00H

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No. 4435-18/29

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