參數(shù)資料
型號： ST72F611F1
英文描述： 64Mb EDO/FPM - OBSOLETE
中文描述： ST7的-低速USB 8 - 3端點(diǎn)位MCU。閃存。內(nèi)徑。水分散粒劑。定時(shí)器
文件頁數(shù)： 80/161頁
文件大?。?/td> 2070K
代理商： ST72F611F1
ST72324
25/161
6.3 RESET SEQUENCE MANAGER (RSM)
6.3.1 Introduction
The reset sequence manager includes three RE-
SET sources as shown in Figure 13:
s
External RESET source pulse
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 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 3 phases
as shown in Figure 12:
s
Active Phase depending on the RESET source
s
256 or 4096 CPU clock cycle delay (selected by
option byte)
s
RESET vector fetch
The 256 or 4096 CPU clock cycle delay allows the
oscillator to stabilise and ensures that recovery
has taken place from the Reset state. The shorter
or longer clock cycle delay should be selected by
option byte to correspond to the stabilization time
of the external oscillator used in the application
The RESET vector fetch phase duration is 2 clock
cycles.
Figure 12. RESET Sequence Phases
6.3.2 Asynchronous External RESET pin
The RESET pin is both an input and an open-drain
output with integrated RON weak pull-up resistor.
This pull-up has no fixed value but varies in ac-
cordance with the input voltage. It can be pulled
low by external circuitry to reset the device. See
page 138 for more details.
A RESET signal originating from an external
source must have a duration of at least th(RSTL)in in
order to be recognized (see Figure 14). This de-
tection is asynchronous and therefore the MCU
can enter reset state even in HALT mode.
Figure 13. Reset Block Diagram
RESET
Active Phase
INTERNAL RESET
256 or 4096 CLOCK CYCLES
FETCH
VECTOR
RESET
RON
VDD
WATCHDOG RESET
LVD RESET
INTERNAL
RESET
PULSE
GENERATOR
Filter
相關(guān)PDF資料
PDF描述
ST72F611F1B1 64Mb EDO/FPM - OBSOLETE
ST72P621L4B1 LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS. FLASH OR ROM MEMORY. LVD. WDG. 10-BIT ADC. 2 TIMERS. SCI. SPI
ST72T213G1B3 8-BIT MCU WITH 4 TO 8K ROM/OTP/EPROM, 256 BYTES RAM, ADC, WDG, SPI AND 1 OR 2 TIMERS
ST72T213G1B6 8-BIT MCU WITH 4 TO 8K ROM/OTP/EPROM, 256 BYTES RAM, ADC, WDG, SPI AND 1 OR 2 TIMERS
ST72T213G1M3 8-BIT MCU WITH 4 TO 8K ROM/OTP/EPROM, 256 BYTES RAM, ADC, WDG, SPI AND 1 OR 2 TIMERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72F621J4B1 功能描述:8位微控制器 -MCU Flash 16K USB/SPI/SC 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
ST72F621J4D0 功能描述:8位微控制器 -MCU Flash 16K USB/SPI/SC 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
ST72F621J4T1 功能描述:8位微控制器 -MCU ST7262 Lo Spd USB 8B MCU 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
ST72F621K4B1 功能描述:8位微控制器 -MCU Flash 16K USB/SPI/SC 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
ST72F621L4M1 功能描述:8位微控制器 -MCU Flash 16K USB/SPI/SC 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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