收藏本站
参数资料
型号： ST52510F3M6
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： MICROCONTROLLER, PDSO20
封装： SOP-20
文件页数： 79/136页
文件大小： 3335K
代理商： ST52510F3M6
Obsolete
Product(s)
- Obsolete
Product(s)
ST52510xx ST52513xx
47/136
6.2 Reset
Four Reset sources are available:
■ RESET pin (external source)
■ WATCHDOG (internal source)
■ POWER ON Reset (Internal source)
■ PLVD Reset (Internal source)
When a Reset event occurs, the user program
restarts from the beginning.
6.2.1 External Reset. Reset is an input pin. An
internal reset does not affect this pin. A Reset
signal
originated
by
external
sources
is
recognized immediately. The RESET pin may be
used to ensure Vdd has risen to a point where the
ICU can operate correctly before the user program
is run. Reset must be set to Vdd in working mode.
An internal Pull up resistor guarantees that the
RESET pin is at level “1” when no HALT or Power-
On events occur. See Table 16.9 and Table 16.15
for more details.
6.2.2 Reset Procedures. After the Reset pin is
set to Vdd or following a Power-On Reset event,
the device is not started until the external supply
voltage has reached a threshold level (typical
value Vdd=2.6 V, see electrical characteristics).
Figure 6.2 Reset Block Diagram
After this level has been reached, the internal
oscillator (10 MHZ) is started and a delay period of
4096 clock cycles is initiated, in order to allow the
oscillator to stabilize and to ensure that recovery
has taken place from the Reset state.
If the device has been configured to work with the
internal clock, the user program starts, otherwise
the Option Byte 7 (WAKEUP) is read and another
count starts before running the user program. The
duration of the count depends on the contents of
the Option Byte 7 (WAKEUP), that works as a
prescaler, according to the following formula:
This delay has been introduced in order to ensure
that the oscillator has become stable after its
restart.
If the Reset is generated by the PLVD or the
Watchdog, the oscillator is not turned off; for this
reason the CPU is then restarted immediately,
without the delay.
After a RESET procedure is completed, the core
reads the instruction stored in the first 3 bytes of
the Program/Data Memory, which contains a
JUMP instruction to the first instruction of the user
program. The Assembler tool automatically
generates this Jump instruction with the first
instruction address.
POWER-ON
RESET
Vdd
RESET
4096 x TCLK
INTERNAL RESET
WATCHDOG RESET
(W AKEUP+1) x
4096 x TCLK
WATCHDOG
PROGRAMMABLE LOW VOLTAGE DETECTOR RESET
PLVD
CKMOD1:0
INTERNAL CLOCK SOURCES
EXTERNAL CLOCK
TCLK = Internal Clock period (100 ns)
CKMOD1:0 = see Option Byte 0 (OSC_CR)
WAKEUP = see Option Byte 7 (W AKEUP)
Delay
4096
WAKEUP 1
+
() Tclk
×
=
相关PDF资料
PDF描述
ST52E430B/D 8-BIT, UVPROM, 20 MHz, MICROCONTROLLER, CDIP32
ST52F510F1M6 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PDSO20
ST52F510G0B6 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PDIP28
ST52F513F0M6 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PDSO20
ST52F513F1B6 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PDIP20
相关代理商/技术参数
参数描述
ST52510G2 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-BIT ICU WITH 10-BIT ADC. TWO TIMERS/PWM. I2C. SPI. SCI. UP TO 8K FLASH
ST52510G3 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-BIT ICU WITH 10-BIT ADC. TWO TIMERS/PWM. I2C. SPI. SCI. UP TO 8K FLASH
ST52510K2 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-BIT ICU WITH 10-BIT ADC. TWO TIMERS/PWM. I2C. SPI. SCI. UP TO 8K FLASH
ST52510K3 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-BIT ICU WITH 10-BIT ADC. TWO TIMERS/PWM. I2C. SPI. SCI. UP TO 8K FLASH
ST52510Y2 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-BIT ICU WITH 10-BIT ADC. TWO TIMERS/PWM. I2C. SPI. SCI. UP TO 8K FLASH
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*