BD87A41FVM-TR Rohm Semiconductor, BD87A41FVM-TR Datasheet - Page 4

• Manufacturer Part Number: BD87A41FVM-TR
• Description: IC, VOLTAGE DETECTION, MSOP8
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Watchdog Circuitr

Specifications of BD87A41FVM-TR

• Threshold Voltage: 4.1V
• No. Of Supervisors / Monitors: 1
• Supply Voltage Range: 1V To 10V
• Reset Type: Active-Low
• Supply Current: 5µA
• Digital Ic Case Style: MSOP
• No. Of Pins: 8
• Operating Temperature: RoHS Compliant
• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: Adjustable/Selectable
• Voltage - Threshold: 4.1V
• Mounting Type: Surface Mount
• Package / Case: 8-VSSOP, 8-MSOP (0.110", 2.80mm Width)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●Block diagram
BD37A□□FVM
●Pin assignments
CTW
VDD
No.
CLK
CT
1
2
3
4
5
6
7
8
1
2
3
4
Pulse
generation
circuit
BD37A□□FVM
RESET
name
CTW
GND
VDD
CLK
N.C.
INH
Pin
CT
Vref
Clock input from microcontroller
Reset delay time setting capacitor connection pin
WDT time setting capacitor connection pin
Power supply pin
NC pin
GND pin
WDT on/off setting pin
INH=H/L:WDT=ON/OFF
Reset output pin
+
S
R
VthH
+
Q
VthL
VDD
+
VDD
Function
R
S
Q
CT pin capacitor: 470 pF to 3.3 µF
CTW pin capacitor: 0.001 µF to 10 µF
6
5
8
7
GND
RESET
INH
N.C.
8 7 6 5
1 2 3 4
Fig.13
Fig.14
4/8
No.
1
2
3
4
5
6
7
8
CTW
CLK
GND
RESET
CT
name
CTW
GND
VDD
N.C.
CLK
INH
Pin
CT
BD87A□□FVM／BD99A41F
1
2
3
4
Pulse
generation
circuit
BD87A□□FVM／BD99A41F
WDT time setting capacitor connection pin
Reset delay time setting capacitor connection pin
Clock input from microcontroller
GND pin
Power supply pin
WDT on/off setting pin
INH=H/L:WDT=OFF/ON(BD87A□□FVM)
INH=H/L:WDT=ON/OFF(BD99A41F)
NC pin
Reset output pin
Vref
+
S
R
VthH
+
Q
Function
VthL
VDD
+
VDD
R
S
Q
8
7
6
5
INH
RESET
N.C.
VDD