GMS81C2012 datasheet(65/107 Pages) HYNIX

No. de pieza	GMS81C2012

Descripción Electrónicos	HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS

PDF	107 Pages

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Fabricante Electrónico	HYNIX [Hynix Semiconductor]

Página de inicio	http://www.skhynix.com/kor/main.do

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65 / 107 page

HYUNDAI MicroElectronics

GMS81C2012/GMS81C2020

MAR. 2000 Ver 1.00

14. SERIAL PERIPHERAL INTERFACE

The Serial Peripheral Interface (SPI) module is a serial in-

terface useful for communicating with other peripheral of

microcontroller devices. These peripheral devices may be

serial EEPROMs, shift registers, display drivers, A/D con-

verters, etc. The Serial Peripheral Interface(SPI) is 8-bit

clock synchronous type and consists of serial I/O register,

serial I/O mode register, clock selection circuit octal

counter and control circuit. The SOUT pin is designed to

input and output. So Serial Peripheral Interface(SPI) can

be operated with minimum two pin

Figure 14-1 SPI Block Diagram

÷ 4

÷ 16

XIN PIN

MUX

SCK[1:0]

SCLK PIN

SPI

Shift

Input shift register

SIOR

Clock

Octal

Serial communication

Interrupt

SIOIF

SOUT

Internal Bus

SIOSF

Counter

SCK[1:0]

“11”

overflow

not “11”

Complete

Timer0

Overflow

IOSWIN

SIN PIN

IOSW

SOUT

IOSWIN

CONTROL

CIRCUIT

“0”

“1”

POL

Start

SIOST

GMS81C2012 Datasheet(PDF) 65 Page - Hynix Semiconductor

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