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| 型号： | ST92163N4G0 |
| 厂商： | 意法半导体 |
| 英文描述： | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| 中文描述： | 16位产品全速USB微控制器16端点，20,000光盘和2K的RAM，I2C和脊髓损伤的复合设备， |
| 文件页数： | 64/224页 |
| 文件大小： | 1372K |
| 代理商： | ST92163N4G0 |
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ST92163 - INTERRUPTS
WAKE-UP / INTERRUPT LINES MANAGEMENT UNIT
(Cont’d)
3.12.3 Functional Description
3.12.3.1 Interrupt Mode
To configure the 16 wake-up lines as interrupt
sources, use the following procedure:
1. Configure the mask bits of the 16 wake-up lines
(WUMRL, WUMRH).
2. Configure the triggering edge registers of the
wake-up lines (WUTRL, WUTRH).
3. Set bit 7 of EIMR (R244 Page 0) and EITR
(R242 Page 0) registers of the CPU: so an
interrupt comingfrom one of the16 lines can be
correctly acknowledged.
4. Reset the WKUP-INT bit in the WUCTRL regis-
ter to disable Wake-up Mode.
5. Set the ID1S bit in the WUCTRL register to dis-
able the INT7 external interrupt source and
enable the 16 wake-up lines as external inter-
rupt source lines.
To return to standard mode (INT7 external inter-
rupt source enabled and 16 wake-up lines disa-
bled) it is sufficient to reset the ID1S bit.
3.12.3.2 Wake-up Mode Selection
To configure the 16 lines as wake-up sources, use
the following procedure:
1. Configure the mask bits of the 16 wake-up lines
(WUMRL, WUMRH).
2. Configure the triggering edge registers of the
wake-up lines (WUTRL, WUTRH).
3. Set, as for Interrupt Mode selection, bit 7 of
EIMR and EITR registers only if an interrupt
routine is to be executed after a wake-up event.
Otherwise, if the wake-up event only restarts
the execution of the code from where it was
stopped, the INTD1 interrupt channel must be
masked or
the
external source
selected by resettingthe ID1S bit.
4. Since the RCCU can generate an interrupt
request when exiting from STOP mode, take
care to mask it even if the wake-up event is
must be
only to restart code execution.
5. Set the WKUP-INT bit in the WUCTRL register
to select Wake-up Mode.
6. Set the ID1S bit in the WUCTRL register to dis-
able the INT7 external interrupt source and
enable the 16 wake-up lines as external inter-
rupt source lines. This is not mandatory if the
wake-up event does not require an interrupt
response.
7. Write the sequence 1,0,1 to the STOP bit of the
WUCTRL register with three consecutive write
operations. This is the STOP bit setting
sequence.
To detect if STOP Mode was entered or not, im-
mediately after the STOP bit setting sequence,
poll theRCCU EX_STP bit (R242.7, Page 55) and
the STOP bit itself.
3.12.3.3 STOP Mode Entry Conditions
Assuming the ST9 is in Run mode: during the
STOP bit setting sequence the following cases
may occur:
Case 1: Wrong STOP bit setting sequence
This can happen if an Interrupt/DMA request is ac-
knowledged during the STOP bit setting se-
quence. In this case polling the STOP and
EX_STP bits will give:
STOP = 0, EX_STP = 0
This means that the ST9 did not enter STOP mode
due to a bad STOP bit setting sequence: the user
must retry the sequence.
Case 2: Correct STOP bit setting sequence
In this case the ST9 enters STOP mode.
To exit STOP mode, a wake-up interrupt must be
acknowledged. That implies:
STOP = 0, EX_STP = 1
This means that the ST9 entered and exited STOP
mode due to an external wake-up line event.
相关PDF资料 |
PDF描述 |
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| ST92163N4G0V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163R4G0V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST92163N4G0E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G0L | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G0V | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G1E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
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