FM812 查看數據表（PDF） - Fairchild Semiconductor
零件编号
产品描述 (功能)
生产厂家
FM812 Datasheet PDF : 6 Pages
| |||
FM811/812
Pin Assignments
Top View
GND 1
4 VCC
FM811
RESET 2
3 MR
GND 1
4 VCC
FM812
RESET 2
3 MR
Pin Definitions
Pin Name
GND
RESET
Pin Number
FM811
FM812
1
1
2
N/A
RESET
N/A
2
MR
3
3
VCC
4
4
Description
Ground Pin
RESET goes low if VCC falls below the reset threshold and remains
asserted for one reset time-out period (140ms min.) after VCC exceeds the
reset threshold.
RESET goes high if VCC falls below the reset threshold and remains
asserted for one reset time-out period (140ms min.) after VCC exceeds the
reset threshold.
Manual reset input. Shorting this pin to GND forces a reset. The reset will
remain asserted as long as MR is held low and for one reset time-out
period (140ms min.) after MR goes high. This input cannot be driven by a
CMOS or TTL logic. Push-button switch is recommended to be used with
this pin. Float if unused.
Power supply input, 3V, 3.3V, or 5V
Internal Block Diagram
VCC 4
+
Reset
–
Threshold (V)
MR 3
Reset
Generator
1
GND
RESET (FM811)
2 RESET (FM812)
2
REV. 1.5.1 7/15/02
Share Link: 