BY25Q128ASSIG

@@ -0,0 +1,60 @@+# BY25Q128ASSIG++**BOYAMICRO BY25Q128ASSIG R** · NOR FLASH · SOP-8-208mil++BY25Q128ASSIG from BOYAMICRO BY25Q128ASSIG R, 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, active-low. Drive low to enable the device and start an SPI transaction; drive high to place the device in Standby and put all outputs into high impedance. |+| 2 | SO/IO1 | bidirectional | Serial Data Output for Standard SPI (data shifted out on falling edge of SCLK). Becomes bidirectional IO1 during Dual/Quad Instructions. |+| 3 | /WP/IO2 | bidirectional | Write Protect, active-low, prevents status register writes and hardware-protects memory when SRP1/SRP0 configured accordingly. Has internal pull-up; may be left unconnected if not used. Becomes IO2 in Quad SPI mode. |+| 4 | VSS | power_in | Ground reference for the VCC supply. |+| 5 | SI/IO0 | bidirectional | Serial Data Input for Standard SPI; receives instructions, addresses, and program data latched on the rising edge of SCLK. Becomes bidirectional IO0 during Dual/Quad Instructions. |+| 6 | SCLK | input | Serial Clock input providing the synchronization reference for the SPI interface. Instructions, addresses, and input data are latched on the rising edge; output data changes on the falling edge. |+| 7 | /HOLD/IO3 | bidirectional | Hold, active-low, pauses serial communication with the device without terminating an in-progress write/program/erase. Has internal pull-up; may be left unconnected if not used. Becomes IO3 in Quad-I/O mode. |+| 8 | VCC | power_in | Core and I/O power supply. Single 2.7 V to 3.6 V supply used for all read, program, and erase operations. Must remain within VCC(min)-VCC(max) during all operations. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BOYAMICRO BY25Q128ASSIG R |+| Package | SOP-8-208mil |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `BY25Q128ASSIGSSIG`+- `BY25Q128ASSIGSS`+- `BY25Q128ASSIGPIG`+- `BY25Q128ASSIGPI`+- `BY25Q128ASSIGZSIG`+- `BY25Q128ASSIGZS`+- `BY25Q128ASSIGVSIG`+- `BY25Q128ASSIGVS`+- `BY25Q128ASSIGUSIG`+- `BY25Q128ASSIGUS`+- `BY25Q128ASSIGXSIG`+- `BY25Q128ASSIGXS`+- `BY25Q128ASSIGFSIG`+- `BY25Q128ASSIGFS`++## CAD (KiCad official)++- Symbol: `BY25Q128ASSIG`+- 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:** [BOYAMICRO BY25Q128ASSIG R datasheet](docs/by25q128assig-datasheet.pdf) (77 pp, sha256 `65bba7895d2ef403`, 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/by25q128assig-datasheet.pdf)

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