# ZSSC3224BI3R

**RENESAS** · Interface - Specialized · QFN-24-EP(4x4)

ZSSC3224BI3R from RENESAS, in a QFN-24-EP(4x4). 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 | ZMDI-test | unconnected | Test pin reserved by the manufacturer; do not connect. |
| 2 | RES | input | Active-low ZSSC3224 reset with internal pull-up; a VDD-VSS-VDD transition at this pin causes a complete reset. |
| 3 | VDDB | power_out | Positive external bridge-sensor supply, internally generated with 1.60 V to 1.75 V (typ. 1.68 V) and bridge current limited to 1.8 mA to 16.5 mA for full PSRR. |
| 4 | INN | input | Negative sensor signal input (or sensor ground for absolute voltage-source sensors), with input voltage range 0.65 V to 1.05 V. |
| 5 | EOC | output | End-of-conversion or interrupt output, configurable via the INT_setup MTP setting. |
| 6 | MISO | output | Data output for the SPI interface (max. SPI clock 20 MHz; maximum 40 pF load on MISO at VDD = 1.8 V). |
| 7 | ZMDI-test | unconnected | Test pin reserved by the manufacturer; do not connect. |
| 8 | n.c. | unconnected | Not connected / not bonded; no connection required. |
| 9 | n.c. | unconnected | Not connected / not bonded; no connection required. |
| 10 | n.c. | unconnected | Not connected / not bonded; no connection required. |
| 11 | n.c. | unconnected | Not connected / not bonded; no connection required. |
| 12 | SCLK/SCL | input | Clock input for SPI (SCLK) or I2C (SCL) (I2C clock up to 3.4 MHz). |
| 13 | MOSI/SDA | bidirectional | Data input for SPI (MOSI) or data input/output for I2C (SDA). |
| 14 | VSSB | power_in | Negative external bridge-sensor supply, i.e. sensor ground; the datasheet lists this pin as OUT, it is mapped to power_in as a ground reference. |
| 15 | INP | input | Positive sensor signal input, with input voltage range 0.65 V to 1.05 V. |
| 16 | ZMDI-test | unconnected | Test pin reserved by the manufacturer; do not connect. |
| 17 | SS | input | Slave select for SPI; active low by default (polarity configurable via SS_polarity). |
| 18 | ZMDI-test | unconnected | Test pin reserved by the manufacturer; do not connect. |
| 19 | ZMDI-test | unconnected | Test pin reserved by the manufacturer; do not connect. |
| 20 | n.c. | unconnected | Not connected / not bonded; no connection required. |
| 21 | n.c. | unconnected | Not connected / not bonded; no connection required. |
| 22 | VDD | power_in | Positive supply voltage for the ZSSC3224, recommended range 1.68 V to 3.6 V (Table 3.1); absolute maximum -0.4 V to 3.63 V. |
| 23 | n.c. | unconnected | Not connected / not bonded; no connection required. |
| 24 | VSS | power_in | Ground reference voltage for the ZSSC3224; all voltages are referenced to VSS. |
| 25 | Exposed Pad | unconnected | Exposed thermal pad; do not connect electrically. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RENESAS |
| Package | QFN-24-EP(4x4) |
| Category | Interface ICs |
| Pins | 25 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| External Sensor Supply Voltage, ADC Reference Voltage | VDDB | 1.6 | 1.68 | 1.75 | V | Internally generated | 10 |
| Current Consumption, Active State average | IVDD |  | 1050 | 1500 | µA | Active State, average | 10 |
| Current Consumption, Sleep Mode idle current | IVDD |  | 20 | 250 | nA | Sleep Mode, idle current, 85°C | 10 |
| Power Supply Rejection | PSRVDD | 17 | 60 | 88 | dB | VDD = 1.8V | 10 |
| Power Supply Rejection | PSRVDD | 32 | 65 | 91 | dB | VDD = 2V | 10 |
| ADC Resolution | rADC | 12 |  | 24 | Bit |  | 10 |
| ADC Clock Frequency | fADC | 0.9 | 1 | 1.1 | MHz | Internal ADC clock | 10 |
| Amplifier Gain (64 steps) | Gamp | 6.6 |  | 216 |  | 64 steps | 10 |
| Gain Error | Gerr | -2.5 |  | 2.5 | % | Referenced to nominal gain | 10 |
| External Sensor Bridge Resistance, full PSRR | RBR | 1 | 10 | 50 | kΩ | Full power supply disturbance rejection (PSRR) capabilities | 10 |
| External Sensor Bridge Resistance, reduced PSRR | RBR | 100 |  | 999 | Ω | Reduced PSRR, but full functionality | 10 |
| Internal Oscillator Frequency | fCLK | 3.6 | 4 | 4.4 | MHz |  | 11 |
| Supply Voltage | VDD | 1.68 |  | 3.6 | V |  | 9 |
| External (Parasitic) Capacitance between VDDB and VSS | CL | 0.01 |  | 50 | nF |  | 9 |
| Operation Temperature Range | TAMB | -40 |  | 85 | °C |  | 9 |
| Power-Down Time (duration of VDD Low Level) | tSPIKE | 3 |  |  | µs | Power-on reset requirement | 9 |
| VDD Low Level | VDDlow | 0 |  | 0.2 | V | Power-on reset requirement | 9 |
| VDD Rising Slope | SRVDD | 10 |  |  | V/ms | Power-on reset requirement | 9 |
| Analog Supply Voltage | VDD | -0.4 |  | 3.63 | V |  | 8 |
| Voltage at all Analog and Digital IO Pins | VA_IO, VD_IO | -0.5 |  |  | V | Printed maximum is VDD+0.5 V (expression, not a number) | 8 |
| Input Current into Any Pin except RES, ZMDI-test, SS | IIN | -100 |  | 100 | mA | Input current into any pin except RES, ZMDI-test, SS | 8 |
| Electrostatic Discharge Tolerance, Human Body Model | VHBM1 | -4000 |  | 4000 | V | HBM, C = 100pF, R = 1.5k | 8 |
| Storage Temperature | TSTOR | -50 |  | 150 | °C |  | 8 |

## CAD (KiCad official)

- Symbol: `ZSSC3224BI3R`
- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`
- 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files: `zssc3224bi3r-etched.step` / `zssc3224bi3r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `zssc3224bi3r.step` / `zssc3224bi3r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RENESAS datasheet](docs/zssc3224bi3r-datasheet.pdf) (48 pp, sha256 `01ab92ce89761044`, retrieved 2026-10-31, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (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/zssc3224bi3r-datasheet.pdf)