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參數(shù)資料
| 型號(hào)： | ST90158M9 |
| 英文描述： | 8/16-BIT MICROCONTROLLER (MCU) WITH 16 TO 64K ROM. OTP OR EPROM. 512 TO 2K RAM - ST9 + FAMILY |
| 中文描述： | 16位產(chǎn)品微控制器（MCU），并配備16至64K的光盤。檢察官辦公室或EPROM。 512 2K的內(nèi)存- ST9家庭 |
| 文件頁(yè)數(shù)： | 55/199頁(yè) |
| 文件大?。?/td> | 2813K |
| 代理商： | ST90158M9 |
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ST90158 - INTERRUPTS
4.6 EXTERNAL INTERRUPTS
The standard ST9 core contains 8 external inter-
rupts sources grouped into four pairs.
Table 10. External Interrupt Channel Grouping
Each source has a trigger control bit TEA0,..TED1
(R242,EITR.0,..,7 Page 0) to select triggering on
the rising or falling edge of the external pin. If the
Trigger control bit is set to “1”, the corresponding
pending bit IPA0,..,IPD1 (R243,EIPR.0,..,7 Page
0) is set on the input pin rising edge, if it is cleared,
the pending bit is set on the falling edge of the in-
put pin. Each source can be individually masked
through
the
corresponding
IMA0,..,IMD1 (EIMR.7,..,0). See
Figure 26
.
The priority level of the external interrupt sources
can be programmed among the eight priority lev-
els with the control register EIPLR (R245). The pri-
ority level of each pair is software defined using
the bits PRL2, PRL1. For each pair, the even
channel (A0,B0,C0,D0) of the group has the even
priority level and the odd channel (A1,B1,C1,D1)
has the odd (lower) priority level.
control
bit
Figure 25. Priority Level Examples
n
Figure 25
shows an example of priority levels.
Figure 26
gives an overview of the External inter-
rupt control bits and vectors.
– The source of the interrupt channel A0 can be
selected between the external pin INT0 (when
IA0S = “1”, the reset value) or the On-chip Timer/
Watchdog peripheral (when IA0S = “0”).
– The source of the interrupt channel B0 can be
selected between the external pin INT2 (when
(SPEN,BMS)=(0,0)) or the on-chip SPI peripher-
al.
– The source of the interrupt channel C0 can be
selected between the external pin INT4 (when
INTS = “1”) or the on-chip Standard Timer.
– The source of the interrupt channel D0 can be
selected between the external pin INT6 (when
INT_SEL = “0”) or the on-chip RCCU.
Warning:
When using channels shared by both
external interrupts and peripherals, special care
must be taken to configure their control registers
for both peripherals and interrupts.
Table 11. Multiplexed Interrupt Sources
External Interrupt
INT7
INT6
INT5
INT4
INT3
INT2
INT1
INT0
Channel
INTD1
INTD0
INTC1
INTC0
INTB1
INTB0
INTA1
INTA0
1
0
0
1
0
0
1
PL2D PL1D PL2C PL1C PL2B PL1B PL2A PL1A
INT.D1:
INT.C1: 001=1
INT.D0:
SOURCE
PRIORITY
PRIORITY
SOURCE
INT.A0: 010=2
INT.A1: 011=3
INT.B1: 101=5
INT.B0: 100=4
INT.C0: 000=0
EIPLR
VR000151
0
100=4
101=5
Channel
Internal Interrupt
Source
Timer/Watchdog
SPI Interrupt
STIM Timer
RCCU
External Interrupt
Source
INT0
INT2
INT4
INT6
INTA0
INTB0
INTC0
INTD0
9
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相關(guān)代理商/技術(shù)參數(shù) |
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| ST90158M9LVT6 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8/16-BIT MICROCONTROLLER (MCU) WITH 16 TO 64K ROM. OTP OR EPROM. 512 TO 2K RAM - ST9 + FAMILY |
| ST90158M9Q6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM |
| ST90158M9T1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM |
| ST90158M9T6 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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