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ST62T18C 数据表(PDF) 31 Page - STMicroelectronics

部件名 ST62T18C
功能描述  8-BIT MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, UART, OSG, SAFE RESET AND 20-PIN PACKAGE
PDF  82 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST62T18C 数据表(HTML) 31 Page - STMicroelectronics

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ST62T18C/E18C
INTERRUPTS (Cont’d)
Interrupt Polarity Register (IPR)
Address: DAh
—
Read/Write
In conjunction with I/O register ESB bit, the polarity
of I/O pins triggered interrupts can be selected by
setting accordingly the Interrupt Polarity Register
(IPR). If a bit in IPR is set to one the corresponding
port interrupt is inverted (e.g. IPR bit 2 = A; port C
generates interrupt on rising edge. At reset, IPR is
cleared and all port interrupts are not inverted (e.g.
Port C generates interrupts on falling edges).
Bit 7 - Bit 4 =
Unused.
Bit 3 =
Port D Interrupt Polarity.
Bit 2 = Unused.
Bit 1=
Port A Interrupt Polarity.
Bit 0 =
Port B Interrupt Polarity.
Tables 11. I/O Interrupts selections according to IPR, IOR programming
70
-
-
-
-
PortD
-
PortA PortB
GEN
IPR3
IPR0
IOR5
Port B occurrence
Port D occurrence
Interrupt
source
1
0
0
0
falling edge
falling edge
2
1
0
0
1
rising edge
rising edge
1
0
1
0
rising edge
falling edge
1
0
1
1
falling edge
rising edge
1
1
0
0
falling edge
rising edge
1
1
0
1
rising edge
falling edge
1
1
1
0
rising edge
rising edge
1
1
1
1
falling edge
falling edge
0
X
X
X
Disabled
Disabled
GEN
IPR1
IOR6
Port A occurrence
Interrupt
source
1
0
0
falling edge
1
1
0
1
low level
1
1
0
rising edge
1
1
1
high level
0
X
X
Disabled
31



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