STM6905 STMicroelectronics, STM6905 Datasheet - Page 8

• Manufacturer Part Number: STM6905
• Description: Quintuple, ultralow voltage supervisor with push-button reset
• Manufacturer: STMicroelectronics

Specifications of STM6905

• Primary Supply (vcc) Monitor. Fixed (factory - Programmed) Reset Thresholds: 3.078 V to 2.866 V
• Second Fixed (v2in) Monitor. Fixed (factoryprogrammed) Reset Thresholds: 2.333 V to 1.050 V
• Reset Delay Time (trec) On Power-up: 210 ms (typ)
• Operating Temperature: –40°C to 85°C (industrial grade)

Figure 3.
Figure 4.
8/19
V
V
V
TRIP
TRIP
TRIP
=
=
=
(600mV)
(600mV)
(600mV)
Functional block diagram
1. Internal pull-up on MR input of 10k ohm (typ).
Typical hardware hookup application diagram
V2IN
V4IN
V3IN
V CC
V5IN
MR
(
(
(
R1 + R2
R5 + R6
R3 + R4
R2
R4
R6
V CC
R1
R2
)
)
)
V CC3
(1)
R3
R4
V REF = 0.6V
0.1 F
V REF = 0.6V
V REF = 0.6V
V CC4
From DC/DC Converter
V CC2
V RST1
V RST2
0.1 F
R5
R6
V CC5
V CC1
COMPARE
COMPARE
COMPARE
COMPARE
COMPARE
VIN3
V CC
VIN2
VIN4
VIN5
STM6905
V SS
RST
MR
Generator
t rec
RST (To Processor Reset)
ai13970
RST
Push-button
Switch
ai13973