参数资料
型号: TSC87C52-20IAD
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 20 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 23/46页
文件大小: 4720K
代理商: TSC87C52-20IAD
29
ATtiny20 [DATASHEET]
8235E–AVR–03/2013
Figure 8-2.
MCU Start-up, RESET Tied to V
CC
Figure 8-3.
MCU Start-up, RESET Extended Externally
8.2.2
External Reset
An External Reset is generated by a low level on the RESET pin if enabled. Reset pulses longer than the minimum pulse
width (see section “System and Reset Characteristics” on page 170) will generate a reset, even if the clock is not
running. Shorter pulses are not guaranteed to generate a reset. When the applied signal reaches the Reset Threshold
Voltage – VRST – on its positive edge, the delay counter starts the MCU after the time-out period – tTOUT – has expired.
External reset is ignored during Power-on start-up count. After Power-on reset the internal reset is extended only if
RESET pin is low when the initial Power-on delay count is complete. See Figure 8-2 and Figure 8-3.
V
TIME-OUT
RESET
TOUT
INTERNAL
t
V
POT
V
RST
CC
V
TIME-OUT
TOUT
INTERNAL
CC
t
V
POT
V
RST
> t
RESET
相关PDF资料
PDF描述
TSC87C52-25AKB 8-BIT, UVPROM, 25 MHz, MICROCONTROLLER, CQCC44
TSC80C31-20MXR 8-BIT, 20 MHz, MICROCONTROLLER, UUC40
TSC80C31-25MWB/883 8-BIT, 25 MHz, MICROCONTROLLER, UUC40
TSC80C51-12MXR 8-BIT, MROM, 12 MHz, MICROCONTROLLER, UUC40
TSC80C51-20MWR/883 8-BIT, MROM, 20 MHz, MICROCONTROLLER, UUC40
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