BQ2205LYPWR

@@ -0,0 +1,57 @@+# BQ2205LYPWR++**Texas Instruments** · SRAM · TSSOP-16++BQ2205LYPWR from Texas Instruments, in a TSSOP-16. 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 | A | input | SRAM bank select input. Chooses which conditioned chip-enable output (CECON1 or CECON2) receives the CE input during power-valid operation. Typically tied to a high-order address line. |+| 2 | NC | unconnected | No connect. Must be left floating. |+| 3 | NC | unconnected | No connect. Must be left floating. |+| 4 | VSS | power_in | Ground reference (0 V). All three VSS pins (4, 5, 8) should be tied to system ground; use a single-point ground technique to separate low-current small-signal ground from high-current supply ground. |+| 5 | VSS | power_in | Ground reference (0 V). Tie to system ground together with pins 4 and 8. |+| 6 | NC | unconnected | No connect. Must be left floating. |+| 7 | NC | unconnected | No connect. Must be left floating. |+| 8 | VSS | power_in | Ground reference (0 V). Tie to system ground together with pins 4 and 5. |+| 9 | BCp | power_in | Backup battery cell input. Accepts a 3-V primary (non-rechargeable) lithium cell; VBC range 2.0 V to 4.0 V (absolute max 4.5 V wrt VSS). Sources VOUT when VCC drops below the switch-over threshold VSO. Typical backup current 50 nA (150 nA max). |+| 10 | CECON1 | output | Conditioned chip-enable output 1 (active low). Drives CE of SRAM bank 1; forced inactive high during power-fail and for tCER after power-up. VOL 0.4 V at 2 mA, VOH 2.4 V at 0.5 mA. |+| 11 | CE | input | Chip-enable input (active low) from the host processor. Passed through to CECON1 or CECON2 (selected by A) with less than 25 ns propagation delay when power is valid; blocked otherwise for write-protection. |+| 12 | VCC | power_in | Main 3.3-V supply input (3.0 V to 3.6 V recommended, absolute max 6.0 V). Continuously monitored against VPFD (typ 2.9 V); power-fail below this threshold triggers write-protect and reset. Typical ICC 210 uA (500 uA max). |+| 13 | VOUT | power_out | Switched SRAM supply output. Sourced from VCC when power is valid (VCC-0.3 V at 80 mA) and from BCp during backup (VBC-0.3 V at 100 uA). Feeds the VCC pins of the external SRAM banks. |+| 14 | CECON2 | output | Conditioned chip-enable output 2 (active low). Drives CE of SRAM bank 2; forced inactive high during power-fail and for tCER after power-up. VOL 0.4 V at 2 mA, VOH 2.4 V at 0.5 mA. |+| 15 | BW | output | Battery warning output, open-drain, active low. Latches the result of the battery-warning comparison (threshold 0.677 x VCC) after tCER on power-up; low indicates low battery. Requires an external pull-up to VCC. VOL 0.4 V at 1 mA. |+| 16 | RST | output | Power-on/power-fail reset output to the system CPU, open-drain, active low. Held low while VCC < VPFD and for tRST (30-85 ms) after VCC returns above VPFD. External pull-up not to exceed 10 kohm when a push-button reset is used. VOL 0.4 V at 1 mA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-16 |+| Category | Memory |+| Pins | 16 |++## Ordering variants++Same part, different packaging or reel option.++- `BQ2205LYPWR`++## CAD (KiCad official)++- Symbol: `BQ2205LYPWR`+- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`+- 3D model: TSSOP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/bq2205ly.pdf) (17 pp, sha256 `031dc3e4391ffd75`, retrieved 2026-08-17, tier: manufacturer)+- **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/bq2205lypwr-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "bq2205lypwr",+  "version": "0.1.0",+  "type": "component",+  "description": "Texas Instruments SRAM, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "memory",+    "bq2205lypwr"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "bq2205lypwr.kicad_sym",+    "bq2205lypwr.kicad_mod",+    "bq2205lypwr.glb",+    "bq2205lypwr.step",+    "bq2205lypwr.lbr",+    "docs/hero.png",+    "docs/bq2205lypwr-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file