參數(shù)資料
型號： ST72F324B
廠商： 意法半導(dǎo)體
英文描述： 5V Range 8-Bit MCU With 8 TO 32K FLASH/ROM, 10-Bit ADC, 4 Timers, SPI, SCI Interface(具有ICP,IAP,Nested Interrupt,TLI,ROP的8位MCU)
中文描述： 5V范圍內(nèi)的8位8到32K閃存/ ROM，10位ADC，4個計時器，SPI和SCI接口（具有比較方案，國際檢察官聯(lián)合會，嵌套中斷，中華語文研習(xí)所，人事登記的8位微控制器）
文件頁數(shù)： 27/167頁
文件大?。?/td> 1641K
代理商： ST72F324B
ST72324B
27/167
6.4 SYSTEM INTEGRITY MANAGEMENT (SI)
The System Integrity Management block contains
the Low Voltage Detector (LVD) and Auxiliary Volt-
age Detector (AVD) functions. It is managed by
the SICSR register.
6.4.1 Low Voltage Detector (LVD)
The Low Voltage Detector function (LVD) gener-
ates a static reset when the V
DD
supply voltage is
below a V
IT-
reference value. This means that it
secures the power-up as well as the power-down
keeping the ST7 in reset.
The V
IT-
reference value for a voltage drop is lower
than the V
IT+
reference value for power-on in order
to avoid a parasitic reset when the MCU starts run-
ning and sinks current on the supply (hysteresis).
The LVD Reset circuitry generates a reset when
V
DD
is below:
– V
IT+
when V
DD
is rising
– V
IT-
when V
DD
is falling
The LVD function is illustrated in
Figure 15
.
The voltage threshold can be configured by option
byte to be low, medium or high.
Provided the minimum V
DD
value (guaranteed for
the oscillator frequency) is above V
IT-
, the MCU
can only be in two modes:
– under full software control
– in static safe reset
In these conditions, secure operation is always en-
sured for the application without the need for ex-
ternal reset hardware.
During a Low Voltage Detector Reset, the RESET
pin is held low, thus permitting the MCU to reset
other devices.
Notes
:
The LVD allows the device to be used without any
external RESET circuitry.
If the medium or low thresholds are selected, the
detection may occur outside the specified operat-
ing voltage range. Below 3.8V, device operation is
not guaranteed.
The LVD is an optional function which can be se-
lected by option byte.
It is recommended to make sure that the V
DD
sup-
ply voltage rises monotonously when the device is
exiting from Reset, to ensure the application func-
tions properly.
Figure 15. Low Voltage Detector vs Reset
V
DD
V
IT+
V
IT-
RESET
V
hys
1
相關(guān)PDF資料
PDF描述
ST72T752J6B1 Silver Mica Capacitor; Capacitance:270pF; Capacitance Tolerance:+/- 2%; Series:CD10; Voltage Rating:300VDC; Capacitor Dielectric Material:Mica; Termination:Radial Leaded; Lead Pitch:3.6mm; Leaded Process Compatible:Yes RoHS Compliant: Yes
ST72752J4 8-BIT MCU FOR MONITORS WITH UP TO 32K ROM, 1K RAM, ADC, TIMER, SYNC, PWM/BRM, DDC/DMA & I2C
ST72752J5 8-BIT MCU FOR MONITORS WITH UP TO 32K ROM, 1K RAM, ADC, TIMER, SYNC, PWM/BRM, DDC/DMA & I2C
ST72752J6 8-BIT MCU FOR MONITORS WITH UP TO 32K ROM, 1K RAM, ADC, TIMER, SYNC, PWM/BRM, DDC/DMA & I2C
ST72E752J6D1 Silver Mica Capacitor; Capacitance:270pF; Capacitance Tolerance:+/- 5%; Series:CD10; Voltage Rating:300VDC; Capacitor Dielectric Material:Mica; Termination:Radial Leaded; Lead Pitch:0.141"; Leaded Process Compatible:No RoHS Compliant: No
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72F324BJ2B6 功能描述:8位微控制器 -MCU ST72324B 5V RANGE 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
ST72F324BJ2T6 功能描述:8位微控制器 -MCU 8-BIT MCU W/ 8-32K Flash/ROM ADC 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
ST72F324BJ4B5 功能描述:8位微控制器 -MCU ST72324B 5V RANGE 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
ST72F324BJ4B6 功能描述:8位微控制器 -MCU 5V RANGE 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
ST72F324BJ4T3 功能描述:8位微控制器 -MCU ST72324B 5V RANGE 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*