參數(shù)資料
型號(hào): SC16C2550BIBS,128
廠商: NXP Semiconductors
文件頁(yè)數(shù): 25/31頁(yè)
文件大?。?/td> 0K
描述: IC UART DUAL W/FIFO 32-HVQFN
標(biāo)準(zhǔn)包裝: 6,000
特點(diǎn): 故障啟動(dòng)位檢測(cè)
通道數(shù): 2,DUART
FIFO's: 16 字節(jié)
電源電壓: 2.5V,3.3V,5V
帶自動(dòng)流量控制功能:
帶故障啟動(dòng)位檢測(cè)功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類(lèi)型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 32-HVQFN(5x5)
包裝: 帶卷 (TR)
其它名稱(chēng): 935280309128
SC16C2550BIBS-F
SC16C2550BIBS-F-ND
42
2570N–AVR–05/11
ATmega325/3250/645/6450
Figure 11-1. Reset Logic
11.3
Power-on Reset
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in “System and Reset Characteristics” on page 301. The POR is activated whenever
V
CC 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 V
CC rise. The RESET signal is activated again, without any delay,
when V
CC decreases below the detection level.
Figure 11-2. MCU Start-up, RESET Tied to V
CC
MCU Status
Register (MCUSR)
Brown-out
Reset Circuit
BODLEVEL [1..0]
Delay Counters
CKSEL[3:0]
CK
TIMEOUT
WDRF
BORF
EXTRF
PORF
DATA BUS
Clock
Generator
SPIKE
FILTER
Pull-up Resistor
JTRF
JTAG Reset
Register
Watchdog
Oscillator
SUT[1:0]
Power-on Reset
Circuit
V
RESET
TIME-OUT
INTERNAL
RESET
t
TOUT
V
POT
V
RST
CC
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