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STM6322 Datasheet(PDF) 17 Page - STMicroelectronics

Part No. STM6322
Description  5-Pin Supervisor with Watchdog Timer and Push-button Reset
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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STM6322 Datasheet(HTML) 17 Page - STMicroelectronics

 
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STM6321/6322/6821/6822/6823/6824/6825
Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 4.5V to 5.5V for “L/M” versions; VCC = 2.7V to 3.6V for “T/S/R”
versions; and VCC = 2.1V to 2.75V for “Z” version (except where noted).
2. VCC (min) = 1.0V for TA = 0°C to +85°C.
3. WDI input is designed to be driven by a three-state output device. To float WDI, the “high-impedance mode” of the output device
must have a maximum leakage current of 10µA and a maximum output capacitance of 200pF. The output device must also be able
to source and sink at least 200µA when active.
4. WDI is internally serviced within the watchdog period if WDI is left unconnected.
5. The leakage current measured on the RST pin is tested with the reset asserted (output high impedance).
6. Contact local sales office for availability.
Reset Thresholds
VRST
(5)
Reset Threshold
STM6xxxL
25°C
4.561
4.630
4.699
V
–40 to 85°C
4.514
4.746
V
STM6xxxM
25°C
4.314
4.390
4.446
V
–40 to 85°C
4.270
4.490
V
STM6xxxT
25°C
3.040
3.080
3.110
V
–40 to 85°C
3.000
3.150
V
STM6xxxS
25°C
2.890
2.930
2.960
V
–40 to 85°C
2.857
3.000
V
STM6xxxR
25°C
2.590
2.630
2.660
V
–40 to 85°C
2.564
2.696
V
STM6xxxZ(6)
25°C
2.280
2.320
2.350
V
–40 to 85°C
2.250
2.380
V
Reset Threshold
Hysteresis
L/M versions
10
mV
T/S/R/Z versions
5
mV
VCC to RST Delay
(VRST – VCC = 100mV,
VCC falling at 1mV/µs)
20
µs
trec
Reset Pulse Width
140
200
280
ms
Reset Threshold
Temperature Coefficient
40
ppm/
°C
Push-button Reset Input
tMLMH
tMR
MR Pulse Width
1
µs
tMLRL
tMRD
MR to RST Output Delay
500
ns
MR Glitch Immunity
100
ns
MR Pull-up Resistor
35
52
75
k
Watchdog Timer
tWD
Watchdog Timeout
Period
1.12
1.60
2.24
s
WDI Pulse Width
50
ns
Sym
Alter-
native
Description
Test Condition(1)
Min
Typ
Max
Unit


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