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9202 データシート(PDF) 41 Page - STMicroelectronics

部品番号 9202
部品情報  Flash Programmable System Devices with 8032 Microcontroller Core
PDF  175 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

9202 データシート(HTML) 41 Page - STMicroelectronics

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UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
USART Interrupt
s
The USART Interrupt is generated by RI
(receive interrupt) OR TI (transmit interrupt).
s
When the USART Interrupt is generated, the
corresponding request flag must be cleared by
software. The interrupt service routine will have
to check the various USART registers to
determine the source and clear the
corresponding flag.
s
Both USART’s are identical, except for the
additional interrupt controls in the Bit 4 of the
additional interrupt control registers (A7H, B7H)
Figure 16. Interrupt System
AI06646
INT0
USART
Timer
0
I2C
INT1
DDC
Timer
1
USB
2nd
USART
Timer
2
High
Low
Interrupt
Sources
IE /
IP / IPA Priority
Global
Enable



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