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型號(hào)：	UPD780076
廠商：	NEC Corp.
元件分類：	8位微控制器
英文描述：	8-Bit Single-Chip Microcontrollers
中文描述：	8位單芯片微控制器
文件頁(yè)數(shù)：	367/592頁(yè)
文件大?。?/td>	3307K
代理商：	UPD780076

CHAPTER 18 SERIAL INTERFACE IIC0 (

PD780078Y SUBSERIES ONLY)

s Manual U14260EJ3V1UD

(2) Slave operation

The processing procedure of the slave operation is as follows.

Basically, the slave operation is event-driven. Therefore, processing by the INTIIC0 interrupt (processing that

must substantially change the operation status such as detection of a stop condition during communication) is

In the following explanation, it is assumed that the extension code is not supported for data communication. It

is also assumed that the INTIIC0 interrupt servicing only performs status transition processing, and that actual

data communication is performed by the main processing.

Therefore, data communication processing is performed by preparing the following three flags and passing them

to the main processing instead of INTIIC0.

<1> Communication mode flag

This flag indicates the following two communication statuses.

Status in which data communication is not performed

Communication mode: Status in which data communication is performed (from valid address detection

to stop condition detection, no detection of ACK from master, address mismatch)

<2> Ready flag

This flag indicates that data communication is enabled. Its function is the same as the INTIIC0 interrupt for

ordinary data communication. This flag is set by interrupt servicing and cleared by the main processing.

Clear this flag by interrupt servicing when communication is started. However, the ready flag is not set by

interrupt servicing when the first data is transmitted. Therefore, the first data is transmitted without the flag

being cleared (an address match is interpreted as a request for the next data).

<3> Communication direction flag

This flag indicates the direction of communication. Its value is the same as TRC0.

Interrupt servicing

Main processing

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相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
UPD780101MC-047-5A4-E1-A	制造商:Renesas Electronics Corporation 功能描述:
UPD780102MC-082-5A4-A	制造商:Renesas Electronics Corporation 功能描述:
UPD780102MC-083-5A4-A	制造商:Renesas Electronics Corporation 功能描述:
UPD780134GK-424-9ET-E3-A	制造商:Renesas Electronics Corporation 功能描述:
UPD78014GC-765-AB8	制造商:NEC Electronics Corporation 功能描述:

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