參數(shù)資料
型號: AAT3524IGY-308-200-T1
廠商: Advanced Analogic Technologies, Inc.
元件分類: 復(fù)位半導(dǎo)體
英文描述: MicroPower Microprocessor Reset Circuit
中文描述: 微功耗微處理器復(fù)位電路
文件頁數(shù): 5/8頁
文件大小: 225K
代理商: AAT3524IGY-308-200-T1
AAT3520/2/4
MicroPower Microprocessor Reset Circuit
3520.2002.2.0.9
5
Functional Description
General
During start-up, the reset pin on a microprocessor
ensures that it is fully reset and starts up in a known
condition. The AAT3520 series of microprocessor
reset devices monitor the supply voltage to a micro-
processor and assert a reset signal whenever the
V
CC
voltage falls below a factory programmed
threshold. This threshold is accurate within +/-1.5%
at 25oC and within +/- 2.5% over the entire operat-
ing temperature range. The reset signal remains
asserted for a fixed time period (t
RDY
) after V
CC
has
risen above the threshold as shown in Figure 1.
See Ordering Information for available RESET
active timeout periods
Functional Block Diagram
Reset
Generator
+ Timer
Oscillator
V
CC
GND
RESET
(RESET)
V
REF
Figure 1: Reset Timing Diagram (AAT3522, AAT3524)
V
RESET
CC
V
TH
V
TH
V
TH
t
RDY
t
RDY
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