FM810 Precision Reset Generator Circuit
August 2000
FM810
Precision Reset Generator Circuit
General Description
The FM810 features comprehensive reset generation for micro-
controller/microprocessor based systems. If the system V
CC
volt-
age level is determined to be in an out-of-tolerance state, the
device automatically generates a high reset signal. The reset
signal is held in the active state (high) for a specified duration
(minimum 140 ms) after the V
CC
returns to a in-tolerance state.
The FM810 is fabricated using CMOS technology. The FM810 is
available in the SOT-23 package.
Features
I
Automatic reset generation on power-up
I
Minimum 140 ms reset pulse 鈥?compatible with other similar
810 class devices
I
Other reset pulse choices available 鈥?32 - 256 ms
I
Choice of commercial and extended temperature ranges
I
Choice of Reset Thresholds 鈥?4.63V, 4.38V, 4.00V, 3.08V,
2.93V, 2.63V
I
Package available: SOT-23
Block Diagram
V
CC
V
CC
Tolerance Detect
& Reset Monitor
Output
Stage
Reset_out
(active high)
Temp. Compensated
Reference
Connection Diagram
1
1 = GND
2 = RESET'
3 = V
CC
2
FM810
3
漏 2000 Fairchild Semiconductor International
FM810 Rev. A.1
1
www.fairchildsemi.com