поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

STM705M6E датащи(PDF) 11 Page - STMicroelectronics

номер детали STM705M6E
подробное описание детали  5 V supervisor
Download  32 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM705M6E датащи(HTML) 11 Page - STMicroelectronics

Back Button STM705M6E Datasheet HTML 7Page - STMicroelectronics STM705M6E Datasheet HTML 8Page - STMicroelectronics STM705M6E Datasheet HTML 9Page - STMicroelectronics STM705M6E Datasheet HTML 10Page - STMicroelectronics STM705M6E Datasheet HTML 11Page - STMicroelectronics STM705M6E Datasheet HTML 12Page - STMicroelectronics STM705M6E Datasheet HTML 13Page - STMicroelectronics STM705M6E Datasheet HTML 14Page - STMicroelectronics STM705M6E Datasheet HTML 15Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 32 page
background image
STM705, STM706, STM707, STM708, STM813L
Operation
Doc ID 10520 Rev 9
11/33
3
Operation
3.1
Reset output
The STM705/706/707/708/813L supervisor asserts a reset signal to the MCU whenever
VCC goes below the reset threshold (VRST), a watchdog time-out occurs (if WDO is tied to
MR), or when the push-button reset input (MR) is taken low. RST is guaranteed to be a logic
low (logic high for STM707/708/813L) for VCC < VRST down to VCC =1 V for TA = 0 °C to
85 °C.
During power-up, once VCC exceeds the reset threshold an internal timer keeps RST low for
the reset time-out period, trec. After this interval RST returns high.
If VCC drops below the reset threshold, RST goes low. Each time RST is asserted, it stays
low for at least the reset time-out period (trec). Any time VCC goes below the reset threshold
the internal timer clears. The reset timer starts when VCC returns above the reset threshold.
3.2
Push-button reset input
A logic low on MR asserts reset. Reset remains asserted while MR is low, and for trec (see
Figure 29) after it returns high. The MR input has an internal 40
Ω pull-up resistor, allowing it
to be left open if not used. This input can be driven with TTL/CMOS-logic levels or with
open-drain/ collector outputs. Connect a normally open momentary switch from MR to GND
to create a manual reset function; external debounce circuitry is not required. If MR is driven
from long cables or the device is used in a noisy environment, connect a 0.1 µF capacitor
from MR to GND to provide additional noise immunity. MR may float, or be tied to VCC when
not used.
3.3
Watchdog input (STM705/706/813L)
The watchdog timer can be used to detect an out-of-control MCU. If the MCU does not
toggle the Watchdog Input (WDI) within tWD (1.6 s), the reset is asserted. The internal 1.6s
timer is cleared by either:
1.
a reset pulse, or
2.
by toggling WDI (high-to-low or low-to-high), which can detect pulses as short as 50 ns.
If WDI is tied high or low, a reset pulse is triggered every 1.8 s (tWD + trec), if WDO is
connected to MR.
See Figure 30 for STM705/706/813L.
The timer remains cleared and does not count for as long as reset is asserted. As soon as
reset is released, the timer starts counting.
Note:
The watchdog function may be disabled by floating WDI or tri-stating the driver connected to
WDI. When tri-stated or disconnected, the maximum allowable leakage current is 10 µA and
the maximum allowable load capacitance is 200 pF.


Аналогичный номер детали - STM705M6E

производительномер деталидатащиподробное описание детали
logo
STMicroelectronics
STM705 STMICROELECTRONICS-STM705 Datasheet
530Kb / 27P
   5V Supervisor
More results

Аналогичное описание - STM705M6E

производительномер деталидатащиподробное описание детали
logo
STMicroelectronics
STM690A STMICROELECTRONICS-STM690A_10 Datasheet
1Mb / 43P
   5 V supervisor with battery switchover
M40SZ100Y STMICROELECTRONICS-M40SZ100Y_10 Datasheet
442Kb / 24P
   5 V or 3 V NVRAM supervisor for LPSRAM
STM706TAM6F STMICROELECTRONICS-STM706TAM6F Datasheet
706Kb / 32P
   3 V supervisor
STM706T STMICROELECTRONICS-STM706T_10 Datasheet
701Kb / 33P
   3 V supervisor
STM706PAM6F STMICROELECTRONICS-STM706PAM6F Datasheet
706Kb / 32P
   3 V supervisor
M40Z300 STMICROELECTRONICS-M40Z300_10 Datasheet
431Kb / 25P
   5 V or 3 V NVRAM supervisor for up to 8 LPSRAMs
M48T201Y STMICROELECTRONICS-M48T201Y_09 Datasheet
317Kb / 37P
   5.0 or 3.3 V TIMEKEEPER짰 supervisor
M41ST85W STMICROELECTRONICS-M41ST85W_11 Datasheet
450Kb / 43P
   3.0/3.3 V I2C combination serial RTC, NVRAM supervisor and microprocessor supervisor
STM690 STMICROELECTRONICS-STM690_10 Datasheet
960Kb / 42P
   3 V supervisor with battery switchover
logo
Alliance Semiconductor ...
ASM706 ALSC-ASM706 Datasheet
274Kb / 16P
   3/3.3/4.0 V uP Supervisor Circuits
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com