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參數(shù)資料
| 型號： | ST7FL09Y0MBE |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16 |
| 封裝： | 0.150 INCH, ROHS COMPLIANT, PLASTIC, SOP-16 |
| 文件頁數(shù)： | 24/104頁 |
| 文件大?。?/td> | 2151K |
| 代理商： | ST7FL09Y0MBE |
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Obsolete
Product(s)
- Obsolete
Product(s)
ST7L05, ST7L09
26/104
SUPPLY, RESET AND CLOCK MANAGEMENT (Cont’d)
7.4 RESET SEQUENCE MANAGER (RSM)
7.4.1 Introduction
The reset sequence manager includes two RE-
SET sources as shown in Figure 14:
■ External RESET source pulse
■ Internal WATCHDOG RESET
Note: A reset can also be triggered following the
detection of an illegal opcode or prebyte code. Re-
fer to Section 12.2.1 on page 70 for further details.
These sources act on the RESET pin and it is al-
ways kept low during the delay phase.
The RESET service routine vector is fixed at ad-
dresses FFFEh-FFFFh in the ST7 memory map.
The basic RESET sequence consists of three
phases as shown in Figure 13:
■ Active Phase depending on the RESET source
■ 256 CPU clock cycle delay
■ RESET vector fetch
Caution: When the ST7 is unprogrammed or fully
erased, the Flash is blank and the RESET vector
is not programmed. For this reason, it is recom-
mended to keep the RESET pin in low state until
programming mode is entered, in order to avoid-
unwanted behavior.
The 256 CPU clock cycle delay allows the oscilla-
tor to stabilize and ensures that recovery has tak-
en place from the Reset state.
The RESET vector fetch phase duration is two
clock cycles.
If the PLL is enabled by option byte, it outputs the
clock after an additional delay of tSTARTUP (see
Figure 13. RESET Sequence Phases
Figure 14. ST7L0x Reset Block Diagram
RESET
Active Phase
INTERNAL RESET
256 CLOCK CYCLES
FETCH
VECTOR
RESET
RON
VDD
INTERNAL
RESET
PULSE
GENERATOR
FILTER
Note 1: See “Illegal Opcode Reset” on page 70. for more details on illegal opcode reset conditions.
WATCHDOG RESET
ILLEGAL OPCODE RESET1)
1
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| ST7FL15F1MAE | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit MCU for automotive with single voltage Flash/ROM memory, data EEPROM, ADC, 5 timers, SPI |
| ST7FL15F1MARE | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit MCU for automotive with single voltage Flash/ROM memory, data EEPROM, ADC, 5 timers, SPI |
| ST7FL15F1MATRE | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit MCU for automotive with single voltage Flash/ROM memory, data EEPROM, ADC, 5 timers, SPI |
| ST7FL15F1MCE | 制造商:STMicroelectronics 功能描述: |
| ST7FL15F1MCRE | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit MCU for automotive with single voltage Flash/ROM memory, data EEPROM, ADC, 5 timers, SPI |
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