STMicroelectronics STM1001
The STM1001 microprocessor reset circuit is a low-power supervisory device used to monitor power supplies. It performs a single function: asserting a reset signal whenever the VCC supply voltage drops below a preset value and keeping it asserted until VCC has risen above the preset threshold for a minimum period of time (trec). STM1001 AI09118 AI09119 6/18 Doc ID 10373 Rev 6 STM1001 2 Operation Operation 2.1 Reset output The STM1001 microprocessor reset circuit asserts a reset signal to the MCU whenever VCC goes below the reset threshold (VRST).| Part No. | STM1001 |
|---|---|
| Datasheet | STM1001 Download |
| Manufacturer |  STMicroelectronics |
| Description | Reset circuit |
| Buy | Stock & Price |
FEATURES
● Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages● Open drain RST output
● 30 ms or 140 ms reset pulse width (min)
● Low supply current - 6 µA (typ)
● Guaranteed RST assertion down to VCC= 1.0 V
● Operating temperature: – –40 °C to 85 °C (industrial grade)
● Lead-free, small SOT23 package STM1001 Reset circuit SOT23-3 (WX) February 2010 Doc ID 10373 Rev 6 1/18 1 STM1001 1
DESCRIPTION
DESCRIPTION
Figure 1. Logic diagram VCC STM1001 RST VSS Table 1. VSS RST VCC Signal names Ground Active-low reset output (open drain) Supply voltage Figure 2. Connections RST 1 VCC 2 3 VSS SOT23-3 AI09116 AI09117 Doc ID 10373 Rev 6 5/18DESCRIPTION
Figure 3. Block diagram VCC VRST COMPARE 1. Open drain Figure 4. Hardware hookup VCC VCC STM1001 RST(1) VSS trec Generator RST(1) (1) VCC MCU RESET Input VSS 1. RST output requires pull-up resistor. RST is guaranteed valid down to VCC = 1 V (0° to 70 °C). During power-up, once VCC exceeds the reset threshold an internal timer keeps RST low for the reset time-out period, trec.
