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| 型号： | ST6200CM6/XXX |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO16 |
| 封装： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-16 |
| 文件页数： | 18/100页 |
| 文件大小： | 3849K |
| 代理商： | ST6200CM6/XXX |
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ST6200C ST6201C ST6203C
24/100
Doc ID 4563 Rev 5
RESET (Cont’d)
5.3.3 RESET Pin
The RESET pin may be connected to a device on
the application board in order to reset the MCU if
required. The RESET pin may be pulled low in
RUN, WAIT or STOP mode. This input can be
used to reset the internal state of the MCU and en-
sure it starts-up correctly. The pin, which is con-
nected to an internal pull-up, is active low and fea-
tures a Schmitt trigger input. A delay (2048 clock
cycles) added to the external signal ensures that
even short pulses on the RESET pin are accepted
as valid, provided VDD has completed its rising
phase and that the oscillator is running correctly
(normal RUN or WAIT modes). The MCU is kept in
the Reset state as long as the RESET pin is held
low.
If the RESET pin is grounded while the MCU is in
RUN or WAIT modes, processing of the user pro-
gram is stopped (RUN mode only), the I/O ports
are configured as inputs with pull-up resistors and
the main oscillator is restarted. When the level on
the RESET pin then goes high, the initialization se-
quence is executed at the end of the internal delay
period.
If the RESET pin is grounded while the MCU is in
STOP mode, the oscillator starts up and all the I/O
ports are configured as inputs with pull-up resis-
tors. When the RESET pin level then goes high,
the initialization sequence is executed at the end
of the internal delay period.
A simple external RESET circuitry is shown in Fig-
ure 15. For more details, please refer to the appli-
cation note AN669.
Figure 14. Reset Block Diagram
fINT
COUNTER
RESET
WATCHDOG RESET
LVD RESET
INTERNAL
RESET
RESD
1)
1) Resistive ESD protection.
VDD
RPU
20
48
c
loc
k
cy
cles
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST6200CM-AUTO | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT MCUs WITH A/D CONVERTER, TWO TIMERS, OSCILLATOR SAFEGUARD & SAFE RESET |
| ST6200FNL | 制造商:Pulse Electronics Corporation 功能描述:TRANSFORMER - Bulk 制造商:Pulse Electronics Corporation 功能描述:XFRMR 1:1 SONET/SDH E4/STM-1 SMD |
| ST6200FNLT | 制造商:Pulse Electronics Corporation 功能描述:TRANSFORMER - Tape and Reel 制造商:Pulse Electronics Corporation 功能描述:XFRMR 1:1 SONET/SDH E4/STM-1 SMD |
| ST6200L | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:LOW VOLTAGE 8-BIT ROM MCUs WITH A/D CONVERTER,AND 16 PINS |
| ST6200LB1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:LOW VOLTAGE 8-BIT ROM MCUs WITH A/D CONVERTER,AND 16 PINS |
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