參數(shù)資料
型號(hào)： ST92F120JV1T
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64
封裝： TQFP-64
文件頁(yè)數(shù)： 305/313頁(yè)
文件大小： 4439K
代理商： ST92F120JV1T
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ST92F120 - INTERRUPTS
WAKE-UP / INTERRUPT LINES MANAGEMENT UNIT (Cont’d)
5.11.5 Register Description
WAKE-UP CONTROL REGISTER (WUCTRL)
R249 - Read/Write
Register Page: 57
Reset Value: 0000 0000 (00h)
Bit 2 = STOP:
Stop bit.
To enter STOP Mode, write the sequence 1,0,1 to
this bit with three consecutive write operations.
When a correct sequence is recognized, the
STOP bit is set and the RCCU puts the MCU in
STOP Mode. The software sequence succeeds
only if the following conditions are true:
– The NMI pin is kept low,
– The WKUP-INT bit is 1,
– All unmasked pending bits are reset
– At least one mask bit is equal to 1 (at least one
external wake-up line is not masked).
Otherwise the MCU cannot enter STOP mode, the
program code continues executing and the STOP
bit remains cleared.
The bit is reset by hardware if, while the MCU is in
STOP mode, a wake-up interrupt comes from any
of the unmasked wake-up lines. The bit is kept
high if, during STOP mode, a rising edge on NMI
pin wakes up the ST9. In this case the user should
reset it by software. The STOP bit is at 1 in the four
following cases (See “Wake-up Mode Selection”
on page 87. for details):
– After the first write instruction of the sequence (a
1 is written to the STOP bit)
– At the end of a successful sequence (i.e. after
the third write instruction of the sequence)
– The ST9 entered and exited STOP mode due to
a rising edge on the NMI pin. In this case the
EX_STP bit in the CLK_FLAG is at 1 (see
RCCU chapter).
– The ST9 did not enter STOP mode due to the
NMI pin being kept high. In this case RCCU bit
EX_STP is at 0
Note: The STOP request generated by the
WUIMU (that allows the ST9 to enter STOP mode)
is ORed with the external STOP pin (active low).
This means that if the external STOP pin is forced
low, the ST9 will enter STOP mode independently
of the status of the STOP bit.
WARNINGS:
– Writing the sequence 1,0,1 to the STOP bit will
enter STOP mode only if no other register write
instructions are executed during the sequence. If
Interrupt or DMA requests (which always perform
register write operations) are acknowledged dur-
ing the sequence, the ST9 will not enter STOP
mode: the user must re-enter the sequence to
set the STOP bit.
– Whenever a STOP request is issued to the MCU,
a few clock cycles are needed to enter STOP
mode (see RCCU chapter for further details).
Hence the execution of the instruction following
the STOP bit setting sequence might start before
entering STOP mode: if such instruction per-
forms a register write operation, the ST9 will not
enter in STOP mode. In order to avoid to execute
register write instructions after a correct STOP
bit setting sequence and before entering the
STOP mode, it is mandatory to execute 3 NOP
instructions after the STOP bit setting sequence.
Bit 1 = ID1S:
Interrupt Channel INTD1 Source.
This bit is set and cleared by software.
0: INT7 external interrupt source selected, exclud-
ing wake-up line interrupt requests
1: The 16 external wake-up lines enabled as inter-
rupt sources, replacing the INT7 external pin
function
WARNING: To avoid spurious interrupt requests
on the INTD1 channel due to changing the inter-
rupt source, use this procedure to modify the ID1S
bit:
1. Mask the INTD1 interrupt channel (bit 7 of reg-
ister EIMR - R244, Page 0 - reset to 0).
2. Program the ID1S bit as needed.
3. Clear the IPD1 interrupt pending bit (bit 7 of
register EIPR - R243, Page 0)
4. Remove the mask on INTD1 (bit EIMR.7=1).
Bit 0 = WKUP-INT:
Wakeup Interrupt.
This bit is set and cleared by software.
0: The 16 external wakeup lines can be used to
generate interrupt requests
1: The 16 external wake-up lines to work as wake-
up sources for exiting from STOP mode
70
---
--
STOP
ID1S
WKUP-INT
9
相關(guān)PDF資料
PDF描述
ST92F120V6T 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64
ST92F120V9T 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST92F120V1Q7 功能描述:8位微控制器 -MCU Flash 128K SPI/I2C RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST92F120V9Q7 功能描述:8位微控制器 -MCU RO 511-ST92F150CV1QB RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST92F124R9TB 功能描述:8位微控制器 -MCU Flash 64K SCI/SPI/I2 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST92F124V1QB 功能描述:8位微控制器 -MCU Flash 128K 2SCI/SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST92F124V1T6 功能描述:8位微控制器 -MCU 8/16-BIT SINGLE VOLT RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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