# BU97510CKV-ME2

**ROHM Semicon** · LCD Drivers · TQFP-64(10x10)

BU97510CKV-ME2 from ROHM Semicon, in a TQFP-64(10x10). 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 | S1/P1/G1 | output | Segment output for display data, selectable by control data as PWM or general-purpose output. |
| 2 | S2/P2/G2 | output | Segment output for display data, selectable by control data as PWM or general-purpose output. |
| 3 | S3/P3/G3 | output | Segment output for display data, selectable by control data as PWM or general-purpose output. |
| 4 | S4/P4/G4 | output | Segment output for display data, selectable by control data as PWM or general-purpose output. |
| 5 | S5/P5/G5 | output | Segment output for display data, selectable by control data as PWM or general-purpose output. |
| 6 | S6/P6/G6 | output | Segment output for display data, selectable by control data as PWM or general-purpose output. |
| 7 | S7 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 8 | S8 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 9 | S9 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 10 | S10 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 11 | S11 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 12 | S12 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 13 | S13 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 14 | S14 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 15 | S15 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 16 | S16 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 17 | S17 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 18 | S18 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 19 | S19 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 20 | S20 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 21 | S21 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 22 | S22 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 23 | S23 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 24 | S24 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 25 | S25 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 26 | S26 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 27 | S27 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 28 | S28 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 29 | S29 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 30 | S30 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 31 | S31 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 32 | S32 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 33 | S33 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 34 | S34 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 35 | S35 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 36 | S36 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 37 | S37 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 38 | S38 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 39 | S39 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 40 | S40 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 41 | S41 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 42 | S42 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 43 | S43 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 44 | S44 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 45 | S45 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 46 | S46 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 47 | S47 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 48 | S48 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 49 | S49 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 50 | S50 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 51 | COM4 | output | Common driver output; frame frequency is fo[Hz]; leave open if unused. |
| 52 | COM3 | output | Common driver output; frame frequency is fo[Hz]; leave open if unused. |
| 53 | COM2 | output | Common driver output; frame frequency is fo[Hz]; leave open if unused. |
| 54 | COM1 | output | Common driver output; frame frequency is fo[Hz]; leave open if unused. |
| 55 | S51 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 56 | VDD | power_in | Logic power supply pin; 2.7V to 6.0V must be applied. |
| 57 | S53 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 58 | S54 | output | Segment output for displaying the display data transferred by serial input; leave open if unused. |
| 59 | VSS | power_in | Power supply pin that must be connected to ground. |
| 60 | S52/OSC | bidirectional | Segment output, or external clock input when set by control data (OC=1); connect to VSS if unused as clock input. |
| 61 | INHb | input | Display off control input: low (VSS) forces display off and stops the oscillator and bias divider current, high (VDD) enables display; connect to VDD if unused. |
| 62 | SCE | input | Serial data transfer chip enable input; must be connected to the controller, tie to VSS if unused. |
| 63 | SCL | input | Serial data transfer synchronization clock input; must be connected to the controller, tie to VSS if unused. |
| 64 | SDI | input | Serial transfer data input; must be connected to the controller, tie to VSS if unused. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | TQFP-64(10x10) |
| Category | Display Modules / LED Drivers / Display Drivers |
| Pins | 64 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Maximum Supply Voltage | VDD | -0.3 |  | 7 | V | VSS = 0.0V | 3 |
| Input Voltage | VIN1 | -0.3 |  | 7 | V | SCE, SCL, SDI, INHb, OSC | 3 |
| Allowable Loss | Pd |  |  | 1 | W | ROHM standard board 70mm×70mm×1.6mm; subtract 10mW per degree above Ta=25°C | 3 |
| Operating Temperature | Topr | -40 |  | 85 | °C |  | 3 |
| Storage Temperature | Tstg | -55 |  | 125 | °C |  | 3 |
| Supply Voltage | VDD | 2.7 |  | 6 | V | Ta = -40°C to +85°C, VSS = 0.0V | 3 |
| Power On Detection Voltage | VDET | 1.4 | 1.8 | 2.2 | V | VDD pin | 3 |
| H Level Input Current | IIH1 |  |  | 5 | µA | VI = 6.0V; SCE, SCL, SDI, INHb, OSC | 3 |
| L Level Input Current | IIL1 | -5 |  |  | µA | VI = 0V; SCE, SCL, SDI, INHb, OSC | 3 |
| L Level Output Voltage S1 to S54 | VOL1 |  |  | 0.9 | V | IO = 20µA | 3 |
| L Level Output Voltage COM1 to COM4 | VOL2 |  |  | 0.9 | V | IO = 100µA | 3 |
| L Level Output Voltage P1/G1 to P6/G6 | VOL3 |  |  | 0.9 | V | IO = 1mA | 3 |
| Current Drain, power-saving mode | IDD1 |  |  | 15 | µA | Power-saving mode | 3 |
| Current Drain 1/2 Bias | IDD2 |  | 70 | 150 | µA | VDD = 5.0V, Output open, 1/2 Bias, Frame Frequency = 80Hz | 3 |
| Current Drain 1/3 Bias | IDD3 |  | 95 | 200 | µA | VDD = 5.0V, Output open, 1/3 Bias, Frame Frequency = 80Hz | 3 |
| Oscillator Frequency1 | fOSC1 | 150 |  | 360 | kHz | VDD = 2.7V to 6.0V | 4 |
| Oscillator Frequency2 | fOSC2 | 255 | 300 | 345 | kHz | VDD = 5.0V | 4 |
| External Clock Frequency | fOSC3 | 30 |  | 600 | kHz | OSC, External clock mode (OC=1) | 4 |
| External Clock Rise Time | tr |  |  | 160 | ns | OSC, External clock mode (OC=1) | 4 |
| External Clock Fall Time | tf |  |  | 160 | ns | OSC, External clock mode (OC=1) | 4 |
| External Clock Duty | tDTY | 30 | 50 | 70 | % | OSC, External clock mode (OC=1) | 4 |
| Data Setup Time | tDS | 160 |  |  | ns | SCL, SDI | 5 |
| Data Hold Time | tDH | 160 |  |  | ns | SCL, SDI | 5 |
| SCE Wait Time | tCP | 160 |  |  | ns | SCE, SCL | 5 |
| SCE Setup Time | tCS | 160 |  |  | ns | SCE, SCL | 5 |
| SCE Hold Time | tCH | 160 |  |  | ns | SCE, SCL | 5 |
| High-Level Clock Pulse Width | tCHW | 160 |  |  | ns | SCL | 5 |
| Low-Level Clock Pulse Width | tCLW | 160 |  |  | ns | SCL | 5 |
| Rise Time | tr |  |  | 160 | ns | SCE, SCL, SDI | 5 |
| Fall Time | tf |  |  | 160 | ns | SCE, SCL, SDI | 5 |
| INH Switching Time | tC | 10 |  |  | µs | INHb, SCE | 5 |

## CAD (KiCad official)

- Symbol: `BU97510CKV-ME2`
- Footprint: `Package_QFP:TQFP-64_10x10mm_P0.5mm`
- 3D model: TQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files: `bu97510ckv-me2-etched.step` / `bu97510ckv-me2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bu97510ckv-me2.step` / `bu97510ckv-me2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](docs/bu97510ckv-me2-datasheet.pdf) (34 pp, sha256 `7e63d3ae401a221f`, retrieved 2026-10-22, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/bu97510ckv-me2-datasheet.pdf)