AAT3520IGY-3.08-50-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT3520IGY-3.08-50-T1 Datasheet - Page 6

• Manufacturer Part Number: AAT3520IGY-3.08-50-T1
• Manufacturer: ANALOGICTECH [Advanced Analogic Technologies]

Functional Block Diagram
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
6
V
RESET
CC
VCC
V
TH
Figure 1: Reset Timing Diagram (AAT3522, AAT3524).
t
RDY
GND
V
TH
MicroPower™ Microprocessor Reset Circuit
V
REF
V
threshold. This threshold is accurate within ±1.5%
at 25ºC and within ±2.5% over the entire operating
temperature range. The reset signal remains
asserted for a fixed time period (t
risen above the threshold, as shown in Figure 1.
See Ordering Information for available RESET
active timeout periods
CC
Generator
Oscillator
+ Timer
voltage falls below a factory-programmed
Reset
V
TH
t
RDY
RESET
(RESET)
AAT3520/2/4
RDY
) after V
3520.2006.03.1.2
CC
has