STM812TW16F STMicroelectronics, STM812TW16F Datasheet - Page 8

• Manufacturer Part Number: STM812TW16F
• Description: IC MPU RESET CIRC 3.08V SOT143-4
• Manufacturer: STMicroelectronics
• Type: Simple Reset/Power-On Resetr

Specifications of STM812TW16F

• Number Of Voltages Monitored: 1
• Output: Push-Pull, Totem Pole
• Reset: Active High
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 3.08V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-143, SOT-143B, TO-253AA
• Monitored Voltage: 3 V, 3.3 V, 5 V
• Output Type: Active High, Push-Pull
• Manual Reset: Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1 V
• Supply Current (typ): 15 uA
• Maximum Power Dissipation: 320 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Undervoltage Threshold: 3.04 V
• Overvoltage Threshold: 3.11 V
• Power-up Reset Delay (typ): 280 ms
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3354-2

Operation
2.4
Note:
8/21
Valid RST output down to V
When V
becomes an open circuit. In most systems this is not a problem, as most MCUs do not
operate below 1 V. However, in applications where RST output must be valid down to 0 V, a
pull-down resistor may be added to hold the RST output low. This resistor must be large
enough to not load the RST output, and still be small enough to pull the output to ground. A
100 kΩ resistor is recommended.
The same situation applies for the active-high RST of the STM810/812. A 100 k
resistor to V
CC
falls below 1 V, the RST (STM809/811) output no longer sinks current, but
CC
should be used if RST must remain valid for V
Doc ID 9873 Rev 5
CC
= 0 V
CC
< 1.0 V.
STM809/810/811/812
Ω
pull-up