STM6780TWB6F

STMicroelectronics · Supervisor And Reset ICs · SOT-23-6

STM6780TWB6F from STMicroelectronics, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	RST	output	Active-low push-pull reset output driven low when VCC1 falls below programmed threshold (1.58-4.63V selectable), RSTIN drops below 0.626V internal reference, or MR input goes low; remains low for minimum 140ms typical (8.8-280ms depending on code) after all monitored supplies recover above thresholds and MR returns high.
2	VSS	power_in	Ground connection; return path for all supply currents and voltage reference for on-chip monitoring comparators and timing circuits.
3	MR	input	Active-low push-button manual reset input with internal 50kΩ pull-up resistor to VCC1; minimum pulse width 1µs when MRC left open, or 6µs minimum when MRC connected to capacitor; MR-to-RST propagation delay 200ns typical.
4	MRC	input	Manual reset delay input; connect to VSS through external capacitor to program manual reset delay from 6µs (open) to several seconds (e.g., 4s with 3.3µF); capacitor value determines timing of reset response after MR button press.
5	RSTIN	input	High-impedance tertiary supply monitor input; RST driven low when voltage at this pin drops below 0.626V internal reference (set with external resistor divider); input current ±25nA; RSTIN-to-RST propagation delay 22µs typical; threshold hysteresis 3mV.
6	VCC1	power_in	Primary supply voltage input (operating range 0.8-5.5V); monitored by on-chip comparator with factory-programmed reset threshold (selectable 1.58-4.63V for STM6780); supplies power to MR internal pull-up resistor and RST push-pull output driver.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	SOT-23-6
Category	Power Management (PMIC)
Pins	6

CAD (KiCad official)

Symbol: STM6780TWB6F
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)
3D model files: stm6780twb6f-etched.step / stm6780twb6f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm6780twb6f.step / stm6780twb6f.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: STMicroelectronics datasheet (30 pp, sha256 1dd8d7f2d8316ee8, retrieved 2026-09-26, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

# STM6780TWB6F

**STMicroelectronics** · Supervisor And Reset ICs · SOT-23-6

STM6780TWB6F from STMicroelectronics, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RST | output | Active-low push-pull reset output driven low when VCC1 falls below programmed threshold (1.58-4.63V selectable), RSTIN drops below 0.626V internal reference, or MR input goes low; remains low for minimum 140ms typical (8.8-280ms depending on code) after all monitored supplies recover above thresholds and MR returns high. |
| 2 | VSS | power_in | Ground connection; return path for all supply currents and voltage reference for on-chip monitoring comparators and timing circuits. |
| 3 | MR | input | Active-low push-button manual reset input with internal 50kΩ pull-up resistor to VCC1; minimum pulse width 1µs when MRC left open, or 6µs minimum when MRC connected to capacitor; MR-to-RST propagation delay 200ns typical. |
| 4 | MRC | input | Manual reset delay input; connect to VSS through external capacitor to program manual reset delay from 6µs (open) to several seconds (e.g., 4s with 3.3µF); capacitor value determines timing of reset response after MR button press. |
| 5 | RSTIN | input | High-impedance tertiary supply monitor input; RST driven low when voltage at this pin drops below 0.626V internal reference (set with external resistor divider); input current ±25nA; RSTIN-to-RST propagation delay 22µs typical; threshold hysteresis 3mV. |
| 6 | VCC1 | power_in | Primary supply voltage input (operating range 0.8-5.5V); monitored by on-chip comparator with factory-programmed reset threshold (selectable 1.58-4.63V for STM6780); supplies power to MR internal pull-up resistor and RST push-pull output driver. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `STM6780TWB6F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `stm6780twb6f-etched.step` / `stm6780twb6f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm6780twb6f.step` / `stm6780twb6f.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588939920476426240) (30 pp, sha256 `1dd8d7f2d8316ee8`, retrieved 2026-09-26, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/stm6780twb6f-datasheet.pdf)