參數資料
型號： ST7FLITE09Y0M1
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
封裝： 0.150 INCH, PLASTIC, SOP-16
文件頁數： 28/111頁
文件大?。?/td> 671K
代理商： ST7FLITE09Y0M1
ST7FLITE0
23/111
7.4 RESET SEQUENCE MANAGER (RSM)
7.4.1 Introduction
The reset sequence manager includes three RE-
SET sources as shown in Figure 14:
s
External RESET source pulse
s
Illegal Opcode RESET
s
Internal LVD RESET (Low Voltage Detection)
s
Internal WATCHDOG RESET
These sources act on the RESET pin and it is al-
ways kept low during the active phase.
The RESET service routine vector is fixed at ad-
dresses FFFEh-FFFFh in the ST7 memory map.
The basic RESET sequence consists of 3 phases
as shown in Figure 13:
s
Active phase depending on the RESET source
s
256 CPU clock cycle delay
s
RESET vector fetch
The 256 CPU clock cycle delay allows the oscilla-
tor to stabilise and ensures that recovery has tak-
en place from the Reset state.
The RESET vector fetch phase duration is 2 clock
cycles.
Figure 13. RESET Sequence Phases
Note: Whatever the reset source is (internal or ex-
ternal), the user must ensure that the level on the
RESET pin can go below the VIL max. level speci-
fied in section 13.9.1 on page 95 . Otherwise the
reset will not be taken into account internally.
Caution: Because the reset circuit is designed to
allow an internal RESET to act on the RESET pin,
the user must ensure that the current sunk on the
RESET pin (by an external pull-up for example) is
less than the absolute maximum value specified
for IINJ(RESET) in section 13.2.2 on page 75.
Figure 14. Reset Block Diagram
RESET
ACTIVE PHASE
INTERNAL RESET
256 CLOCK CYCLES
FETCH
VECTOR
RESET
RON
VDD
WATCHDOG RESET
LVD RESET
INTERNAL
RESET
PULSE
GENERATOR
FILTER
ILLEGAL OPCODE
1
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相關代理商/技術參數
參數描述
ST7FLITE09Y0M3 功能描述:8位微控制器 -MCU Flash 1.5K SPI Intrf RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
ST7FLITE09Y0M6 功能描述:8位微控制器 -MCU Flash 1.5K SPI Intrf RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
ST7FLITE09Y0M6TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI
ST7FLITE09Y0U6 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI
ST7FLITE09Y0U6TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI
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