mic811luy Micrel Semiconductor, mic811luy Datasheet - Page 3

• Manufacturer Part Number: mic811luy
• Description: Mic811/mic812 Microprocessor Reset Circuits
• Manufacturer: Micrel Semiconductor

Pin Configuration
Pin Description
September 2005
MIC811/812
Pin Number
MIC811
N/A
1
2
3
4
Pin Number
MIC812
N/A
1
2
3
4
Pin Name
/RESET
RESET
GND
VCC
/MR
MIC811 4-Lead SOT-143
MIC812 4-Lead SOT-143
RESET
RESET
GND
GND
Pin Function
IC Ground Pin
/RESET goes low if V
serted for one reset timeout period (140ms min.) after V
threshold
RESET goes high if V
serted for one reset timeout period (140ms min.) after V
threshold
Manual Reset Input. A logic low on /MR forces a reset. The reset will remain
asserted as long as /MR is held low and for one reset timeout period (140ms
min.) after /MR goes high. This input can be shorted to ground via a switch
or driven from CMOS or TTL logic. Float if unused.
Power Supply Input.
1
2
1
2
MIC811
MIC812
3
4 V
4 V
3
3
MR
MR
CC
CC
CC
CC
falls below the reset threshold and remains as-
falls below the reset threshold and remains as-
CC
CC
exceeds the reset
exceeds the reset
MIC811/812
Micrel