STM6321SWY6F STMicroelectronics, STM6321SWY6F Datasheet - Page 10
![IC SUPERVISOR TIMR/RESET SOT23-5](/photos/1/38/13847/497-sot-23-5_series_sml.jpg)
STM6321SWY6F
Manufacturer Part Number
STM6321SWY6F
Description
IC SUPERVISOR TIMR/RESET SOT23-5
Manufacturer
STMicroelectronics
Type
Simple Reset/Power-On Resetr
Datasheet
1.STM6321SWY6F.pdf
(29 pages)
Specifications of STM6321SWY6F
Number Of Voltages Monitored
1
Output
Open Drain, Push-Pull
Reset
Active High/Active Low
Reset Timeout
140 ms Minimum
Voltage - Threshold
2.93V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Number Of Elements
1
Monitored Voltage 1 (typ)
2.5/3/3.3/5V
Threshold Voltage 1 (max)
2.96V
Battery Backup Switching
No
Watchdog Timer
Yes
Chip Enable Signals
No
Reset Active Time
280ms
Manual Reset
No
Package Type
SOT-23
Operating Supply Voltage (min)
1V
Operating Supply Voltage (max)
5.5V
Reset Threshold Voltage (max)
2.96V
Reset Threshold Voltage (min)
2.89V
Family Name
STM6321
Power Dissipation
320mW
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Power Fail Detection
No
Mounting
Surface Mount
Pin Count
5
Supply Current
0.012mA
Monitored Voltage
2.5 V, 3 V, 3.3 V, 5 V
Output Type
Active High, Active Low, Open Drain, Push-Pull
Watchdog
Watchdog
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1 V
Supply Current (typ)
12 uA
Maximum Power Dissipation
320 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Undervoltage Threshold
2.89 V
Overvoltage Threshold
2.96 V
Power-up Reset Delay (typ)
280 ms
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6927-2
STM6321SWY6F
STM6321SWY6F
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
STM6321SWY6F
Manufacturer:
ST
Quantity:
20 000
Operation
2
2.1
2.2
10/29
Operation
Reset output
The STM6xxx supervisor asserts a reset signal to the MCU whenever V
reset threshold (V
(MR) is taken low. Reset is guaranteed valid for V
to 85 °C.
During power-up, once V
the reset timeout period, t
Each time RST is asserted, it stays low for at least the reset timeout period (t
V
V
Open drain RST output
The STM6321/6322/6822 have an active-low, open drain reset output. This output structure
will sink current when RST is asserted. Connect a pull-up resistor from RST to any supply
voltage up to 6 V (see
low, and small enough to register a logic high while supplying all input current and leakage
paths connected to the reset output line. A 10 kΩ pull-up resistor is sufficient in most
applications.
Figure 11. STM6321/6322/6822 open drain RST output with multiple supplies
1. STM6322/6822.
2. STM6321/6822.
3. STM6321/6322.
CC
CC
goes below the reset threshold the internal timer clears. The reset timer starts when
returns above the reset threshold.
RST
), a watchdog timeout occurs, or when the push-button reset input
Figure
CC
rec
exceeds the reset threshold an internal timer keeps reset low for
. After this interval reset is de-asserted.
11). Select a resistor value large enough to register a logic
Doc ID 11110 Rev 10
STM6321/6322STM6821/6822/6823/6824/6825
CC
< V
RST
down to V
CC
CC
=1 V for T
goes below the
rec
). Any time
A
= 0 °C