ZD25Q128CSIGT

@@ -0,0 +1,47 @@+# ZD25Q128CSIGT++**Zetta** · NOR FLASH · SOP-8-208mil++ZD25Q128CSIGT from Zetta, in a SOP-8-208mil. 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 | CS# | input | Chip Select input, active low. Drive low to select the device and initiate a command; drive high to deselect and place SO/IO pins in High-Z. |+| 2 | SO/IO1 | bidirectional | Serial Data Output in Standard SPI mode; bidirectional Data I/O bit 1 in Dual/Quad SPI and QPI modes. Data is shifted out on the falling edge of SCLK in single-mode. |+| 3 | WP#/IO2 | bidirectional | Active-low Write Protect input in Standard/Dual SPI mode (blocks writes to the Status Register when SRP0=1); becomes bidirectional Data I/O bit 2 in Quad SPI/QPI modes. |+| 4 | VSS | power_in | Ground reference for the device (0 V). |+| 5 | SI/IO0 | bidirectional | Serial Data Input in Standard SPI mode; bidirectional Data I/O bit 0 in Dual/Quad SPI and QPI modes. Data is latched on the rising edge of SCLK in single-mode. |+| 6 | SCLK | input | Serial Clock input. Provides the timing reference for all serial input and output; up to 133 MHz. Supports SPI mode 0 (CPOL=0, CPHA=0) and mode 3 (CPOL=1, CPHA=1). |+| 7 | HOLD#/RESET#/IO3 | bidirectional | Multi-function pin: HOLD# pauses serial communication (Standard/Dual SPI, active low) or RESET# performs a hardware reset, depending on the HOLD/RST configuration bit; becomes bidirectional Data I/O bit 3 in Quad SPI/QPI modes. |+| 8 | VCC | power_in | Core and I/O power supply, 2.7 V to 3.6 V. Typical standby current 15 uA; deep power-down current 1 uA typical. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Zetta |+| Package | SOP-8-208mil |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `ZD25Q128CSIGTSIGT`++## CAD (KiCad official)++- Symbol: `ZD25Q128CSIGT`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8-208mil (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Zetta datasheet](docs/zd25q128csigt-datasheet.pdf) (85 pp, sha256 `5be74b7133003016`, 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/zd25q128csigt-datasheet.pdf)

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