參數(shù)資料
型號： ST72311N4T6/XXX
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64
封裝： PLASTIC, TQFP-64
文件頁數(shù)： 10/92頁
文件大?。?/td> 624K
代理商： ST72311N4T6/XXX
18/92
ST72311
RESET (Cont’d)
3.2.4 Low Voltage Detector Reset
The on-chip Low Voltage Detector (LVD) gener-
ates a static reset when the supply voltage is be-
low a reference value. The LVD functions both
during power-on as well as when the power supply
drops (brown-out). The reference value for a volt-
age drop is lower than the reference value for pow-
er-on in order to avoid a parasitic reset when the
MCU starts running and sinks current on the sup-
ply (hysteresis).
The LVD Reset circuitry generates a reset when
VDD is below:
VLVDUP when VDD is rising
VLVDDOWN when VDD is falling
Provided the minimun VDD value (guaranteed for
the oscillator frequency) is above VLVDDOWN , the
MCU can only be in two modes:
- under full software control or
- in static safe reset
In this condition, 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.
In noisy environments, the power supply may drop
for short periods and cause the Low Voltage De-
tector to generate a Reset too frequently. In such
cases, it is recommended to use devices without
the LVD Reset option and to rely on the watchdog
function to detect application runaway conditions.
Figure 13. Low Voltage Detector Reset Function
Figure 14. Low Voltage Detector Reset Signal
Note: See electrical characteristics for values of
VLVDUP and VLVDDOWN
Figure 15. Temporization timing diagram after an internal Reset
LOW VOLTAGE
DETECTOR RESET
VDD
FROM
WATCHDOG
RESET
VDD
VLVDUP
VLVDDOWN
VDD
Addresses
$FFFE
Temporization (4096 CPU clock cycles)
VLVDUP
18
相關(guān)PDF資料
PDF描述
ST72311J2B6/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
ST72311N2T3/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64
ST72321BAR7T6 MICROCONTROLLER, QFP64
ST72321BR7T3 MICROCONTROLLER, QFP64
ST72321M9T3/XXX 8-BIT, MROM, MICROCONTROLLER, PQFP80
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72311N5B6 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
ST72311N6B6 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
ST72311R 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH NESTED INTERRUPTS, EEPROM, ADC, 16-BIT TIMERS, 8-BIT PWM ART, SPI, SCI, CAN INTERFACES
ST72311R4Q6 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
ST72311R5Q6 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
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(jìn)入我的后臺，查看報(bào)價(jià)

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

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*