CN825Z

@@ -0,0 +1,45 @@+# CN825Z++**ShangHai Consonance Elec** · Supervisor and Reset ICs · SOT-23-6++CN825Z from ShangHai Consonance Elec, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | /MR | input | Manual reset input, active-low. Pulling this pin low triggers a reset pulse on both RESET outputs. Internally pulled up to VCC via 50 kΩ (38-62 kΩ), so it may be left floating when unused. Can be driven by CMOS, open-drain, or open-collector; a contact switch to GND is sufficient (no external debounce needed). /MR pulse width min 1 µs; /MR-to-reset delay max 500 ns. |+| 2 | GND | power_in | Ground / negative supply return. |+| 3 | /RESET | output | Active-low reset output. Driven low whenever VCC is below the reset threshold (2.32V typ. for CN825Z), /MR is low, or the watchdog timer overflows. Once the fault clears, /RESET remains low for at least 140 ms (200 ms typ.) before releasing high. VOL=0.3V max at ISINK=3.2 mA; guaranteed valid down to VCC=1.1V (VOL=0.3V max at ISINK=150 µA). |+| 4 | VCC | power_in | Positive supply input; also the monitored voltage. Operating range 1.1V to 6.5V (abs-max 6.5V). Continuously compared against the internal 2.32V reset threshold (CN825Z, ±1%). Supply current 2.7 µA typ. below threshold, 16 µA typ. above threshold. |+| 5 | RESET | output | Active-high reset output. Driven high whenever VCC is below the reset threshold, /MR is low, or the watchdog timer overflows. Once the fault clears, RESET stays high for at least 140 ms (200 ms typ.) before returning low. VOH=VCC-1V min at ISOURCE=1 mA; guaranteed valid down to VCC=1.1V (VOH=1.0V at ISOURCE=8 µA). |+| 6 | WDI | input | Watchdog input. Must toggle (high-to-low or low-to-high) within the watchdog timeout (0.95 s min, 1.6 s typ., 2.25 s max) or the watchdog overflows and asserts reset on both outputs. Minimum WDI pulse width 50 ns; input leakage ±50 nA; thresholds 0.25*VCC (low) / 0.75*VCC (high). Watchdog is held cleared while VCC is below threshold or /MR is low. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | ShangHai Consonance Elec |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `CN825Z`++## CAD (KiCad official)++- Symbol: `CN825Z`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn825z-datasheet.pdf) (9 pp, sha256 `6dcd964d13498315`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/cn825z-datasheet.pdf)

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