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ATtiny167-ESSZ датащи(PDF) 50 Page - ATMEL Corporation

номер детали ATtiny167-ESSZ
подробное описание детали  8-bit Microcontroller with 8K/16K Bytes In-System Programmable Flash and LIN Controller
PDF  282 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATtiny167-ESSZ датащи(HTML) 50 Page - ATMEL Corporation

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50
7728D–AVR–07/09
ATtiny87/ATtiny167
Figure 6-1.
Reset Circuit
6.1.3
Power-on Reset
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection
level is defined in Table 22-4 on page 246. The POR is activated whenever Vcc is below the
detection level. The POR circuit can be used to trigger the start-up Reset, as well as to detect
a failure in supply voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
device is kept in RESET after Vcc rise. The RESET signal is activated again, without any
delay, when Vcc decreases below the detection level.
Figure 6-2.
MCU Start-up, RESET Tied to Vcc
MCU Status
Register (MCUSR)
Brown-out
Reset Circuit
BODLEVEL [2..0]
Delay Counters
CKSEL[3:0]
CK
TIMEOUT
DATA BUS
Clock
Generator
Spike
Filter
Pull-up Resistor
Watchdog
Oscillator
SUT[1:0]
Power-on Reset
Circuit
RSTDISBL
V
TIME-OUT
INTERNAL
RESET
tTOUT
VPOT
VPORMAX
VPORMIN
CC
VCCRR



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