参数资料
型号: SAB-C515-RN
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 26/162页
文件大小: 771K
代理商: SAB-C515-RN
Semiconductor Group
7-10
Interrupt System
C515
Special Function Register SCON (Address. 98H)
Reset Value : 00H
The shaded bits are not used for interrupt control.
The serial port interrupt is generated by a logical OR of flag RI and TI in SFR SCON. Neither of
these flags is cleared by hardware when the service routine is vectored too. In fact, the service
routine will normally have to determine whether it was the receive interrupt flag or the transmission
interrupt flag that generated the interrupt, and the bit will have to be cleared by software.
Bit
Function
TI
Serial interface transmitter interrupt flag
Set by hardware at the end of a serial data transmission. Must be cleared by
software.
RI
Serial interface receiver interrupt flag
Set by hardware if a serial data byte has been received. Must be cleared by
software.
SM0
SM1
SM2
REN
98H
SCON
Bit No.
9FH
MSB
LSB
TB8
RB8
TI
RI
9EH
9DH
9CH
9BH
9AH
99H
98H
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