SAH-C515 SIEMENS [Siemens Semiconductor Group], SAH-C515 Datasheet - Page 121
SAH-C515
Manufacturer Part Number
SAH-C515
Description
8-Bit CMOS Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.SAH-C515.pdf
(160 pages)
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Special Function Register SCON (Address. 98 H )
Bit
TI
RI
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.
Semiconductor Group
Bit No.
98 H
The shaded bits are not used for interrupt control.
Function
Serial interface transmitter interrupt flag
Set by hardware at the end of a serial data transmission. Must be cleared by
software.
Serial interface receiver interrupt flag
Set by hardware if a serial data byte has been received. Must be cleared by
software.
MSB
SM0
9F
H
SM1
9E
H
SM2
9D
H
REN
9C
H
7-10
TB8
9B
H
RB8
9A
H
99
TI
H
LSB
Interrupt System
98
RI
H
Reset Value : 00 H
SCON
C515
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