SSD1681 - 200x200 EPD Display Driver/Controller | Solomon Systech
N.º de pieza: SSD1681 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.55 | $25,50 |
| 100 | $2.18 | $218,00 |
| 500 | $1.92 | $960,00 |
| 1.000 | $1.65 | $1.650,00 |
SSD1681 Descripción general
An EPD (Electrophoretic Display) controller is a mixed-signal IC that drives the bistable pigment particles inside an e-Paper panel, generating visible text and graphics without backlight. The controller hierarchy flows: EPD driver -> display driver IC -> flat-panel controller -> mixed-signal semiconductor IC. Because e-Paper pixels are bistable, the SSD1681 only needs to refresh the panel when the displayed image changes, making it the workhorse driver for ultra-low-power electronic shelf labels (ESL), wearables, and IoT indicators.
Key features include support for Mono Black/White and 3-color Red/Black/White panels, an embedded charge-pump booster for generating gate driver voltages, on-chip regulators and oscillator, and a hardware-selectable serial peripheral interface (SPI) for MCU command and image data transfer. The integrated DC-DC booster eliminates external high-voltage transistors and minimizes BOM area.
Architecturally, the SSD1681 integrates a 200-bit source shift register, a 200-bit gate scan register, 1 VCOM driver, 1 border (VBD) driver, waveform look-up tables (LUTs) for grayscale and color transitions, and an OTP memory for default panel parameters. The internal temperature sensor and SPI command set allow the host to trigger optimal drive waveforms for the connected e-Paper panel.
Typical applications include 1.54" and 2.13" e-Paper panels for electronic shelf labels, smart badges, logistics trackers, wearables, IoT sensor displays, and low-power information panels. The SSD1681 is widely adopted on Waveshare, Adafruit and BuyDisplay breakout boards.
When designing with this IC, ensure that the host MCU supplies 3.3V logic to VCI/VDDIO and that the VPP/VNN charge-pump capacitors are sized per the panel's voltage sequence. The BUSY_n line must be polled before initiating SPI commands because e-Paper refresh cycles (typically 2 seconds for full update) are long compared to microsecond-scale SPI transactions.
This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, delivering unique engineering value beyond what distributor product listings provide.
Alternativas directas para SSD1681 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
SSD1680
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SSD1608
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SSD1619
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
IL0317E
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SSD1681 Valores máximos y características eléctricas
| Product Type | Active Matrix EPD Display Driver with Controller |
| Display Resolution Supported | 200 x 200 pixels (single-chip) |
| Color Support | Mono Black/White, Mono 3-color Red/Black/White |
| Source Outputs | 200 |
| Gate Outputs | 200 |
| VCOM Outputs | 1 |
| Border (VBD) Outputs | 1 |
| Host Interface | Hardware-selectable Serial Peripheral Interface (SPI) |
| On-chip Boost Converter | Yes (integrated charge pump for gate driver voltages) |
| On-chip Regulators | Yes (embedded LDO regulators) |
| On-chip Oscillator | Yes (internal oscillator) |
| Built-in Waveform LUT | Yes (host-loadable LUT for grayscale/color transitions) |
| Temperatura de funcionamiento | -40C to +85C (industrial) |
| Estado RoHS | Compliant (per Solomon Systech product page) |
| Tipo de montaje | Surface Mount |
Configuración de pines de SSD1681
| Pin 1 | SCL — SPI serial clock input |
| Pin 2 | SDA — SPI serial data input/output |
| Pin 3 | CS_n — SPI chip select (active low) |
| Pin 4 | RES_n — Reset (active low) |
| Pin 5 | BUSY_n — Busy status output (active low) |
| Pin 6 | D/C — Data/Command select |
| Pin 7 | VCI — Digital supply input (typ. 3.3V) |
| Pin 8 | VDDIO — I/O supply (typ. 3.3V) |
| Pin 9 | VPP — Positive gate driver high voltage (charge pump output) |
| Pin 10 | VNN — Negative gate driver high voltage (charge pump output) |
| Pin 11 | VCOM — Common electrode driver |
| Pin 12 | VBD — Border electrode driver |
| Pin 13 | GND — Ground |
| Pin 14 | S0-S199 — 200 source driver outputs (pins labeled S0..S199) |
| Pin 15 | G0-G199 — 200 gate driver outputs (pins labeled G0..G199) |
| Pin 16 | TEST — Test pin (leave floating or GND per datasheet) |
| Pin 17 | TP1 — Test point 1 (reserved, leave floating per datasheet) |
| Pin 18 | TP2 — Test point 2 (reserved, leave floating per datasheet) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
Aplicaciones típicas
SSD1681 es adecuado para 7 aplicacións: Electronic Shelf Labels (ESL), Wearable e-Paper Badges and Wristbands, IoT Sensor Displays, Logistics Trackers and Shipping Labels, Industrial Information Panels, Healthcare and Patient Information Displays, Smart Home Status Panels.
Electronic Shelf Labels (ESL)
The SSD1681 is the industry-standard driver for 1.54" and 2.13" Red/Black/White electronic shelf labels used in retail price tags. Its 200x200 resolution matches the typical ESL panel size, and the integrated DC-DC booster plus regulators eliminate high-voltage discretes, reducing BOM. Tri-color support lets retailers show original price, sale price, and currency in red highlights. SPI control means a single low-pin-count MCU can drive hundreds of tags on a bus. Recommended companion products: STM32L073RZ (ultra-low-power ARM Cortex-M0+ MCU), nRF52832 (wireless-tag MCU for BLE-based ESL networks).
Recomendado
Wearable e-Paper Badges and Wristbands
Wearable badges and event wristbands benefit from the SSD1681's tri-color support (200x200 px is enough for 6 lines of text or QR codes) and ultra-low refresh power. Because e-Paper is bistable, the SSD1681 only draws current during a 2-second update; the panel retains the image with zero power afterwards. The on-chip oscillator and regulators shrink the host PCB to coin-cell sizes. Recommended companions: MAX17048 (fuel gauge for coin-cell monitoring), ESP32-C3 (Wi-Fi/BLE MCU for synced badge updates).
Recomendado
IoT Sensor Displays
Battery-powered IoT sensors (air-quality monitors, weather stations, soil sensors) use the SSD1681 to display readings on a sunlight-readable e-Paper panel without backlight. The SSD1681's industrial -40C to +85C range suits outdoor enclosures; its SPI bus lets a single ESP32 or STM32 host poll sensors and refresh the panel only on state change. The on-chip charge pump handles the high gate voltages needed by EPD pigment switching. Recommended companions: BME280 (temperature/humidity/pressure sensor), SX1262 (LoRa transceiver for remote IoT nodes).
Recomendado
Logistics Trackers and Shipping Labels
Reusable logistics trackers attach to parcels and update barcode, route, or status displays on a Red/Black/White e-Paper panel driven by the SSD1681. The tri-color capability highlights exceptions (delays, damages) in red. SSD1681's host-selectable SPI means the same driver code works across 1.54" through 2.13" panel sizes, letting one firmware image support an entire product line. Recommended companions: Quectel BG95-M3 (LTE-M/NB-IoT modem), LIS3DHTR (motion sensor).
Recomendado
Industrial Information Panels
Factory floor and warehouse signage use SSD1681-driven panels to show shift schedules, KPIs, or safety alerts. The wide operating temperature and integrated waveform LUT mean a single host can switch between duty cycles without external MCU intervention. The embedded regulator simplifies powering from a 3.3V rail shared with industrial controllers. Recommended companions: SN65HVD75 (RS-485 transceiver for industrial bus), TPS54302D (24V-to-3.3V buck converter for factory rails).
Recomendado
Healthcare and Patient Information Displays
Battery-powered patient room signs, medication reminders, and wristbands use SSD1681 e-Paper panels because the always-on image is readable without backlight, and the chip only consumes energy during refreshes. Tri-color support allows color-coded priority labels. SPI control and small package keep the host PCB small enough for wearable form factors. Recommended companions: MAX30205 (clinical temperature sensor), nRF52840 (BLE host).
Recomendado
Smart Home Status Panels
Wall-mounted smart home panels (thermostat readout, doorbell status, weather) use SSD1681 because the panel retains its last image during power loss, a property e-Paper has that LCD does not. The integrated charge pump and regulators reduce BOM, and the SPI bus lets a single ESP32 drive both the panel and Wi-Fi connectivity. Recommended companions: ESP32-S3 (Wi-Fi/BLE host), BME680 (indoor air-quality sensor).
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para SSD1681 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | SSD1680 | SSD1608 | SSD1619 | IL0317E |
|---|---|---|---|---|---|
| Brand | Solomon Systech | Solomon Systech | Solomon Systech | Solomon Systech | Illuminati Instruments |
| Package | COG/QFN (refer to datasheet) | COG/QFN (same family) | COG/QFN (same family) | COG/QFN (same family) | COG |
| Max Resolution | 200 x 200 | Higher than 200x200 (single-chip) | 160 x 120 | Comparable EPD support | 200 x 200 (similar) |
| Color Support | Mono B/W, 3-color R/B/W | Mono B/W, 3-color R/B/W | Mono B/W only | Mono B/W, 3-color | Mono B/W, 3-color |
| Source Outputs | 200 | Greater than 200 | 160 | Comparable | 200 (similar) |
| Gate Outputs | 200 | Greater than 200 | 120 | Comparable | 200 (similar) |
| Integrated Charge Pump | Yes | Yes | Yes | Yes | Yes |
| Host Interface | SPI (selectable) | SPI (same protocol) | SPI (same protocol) | SPI (same protocol) | SPI (compatible) |
Diferenciadores clave
- Tri-color Red/Black/White capability within a single chip (frente a SSD1608)
- Higher source/gate count than lower-tier SSD16XX parts (frente a SSD1608)
- Higher resolution single-chip EPD driver than mid-tier SSD1680 (frente a SSD1680)
Notas de diseño
The SSD1681 integrates a DC-DC charge pump that generates VPP (positive high voltage) and VNN (negative high voltage) for the gate driver. Decouple VCI with a 1uF X7R ceramic plus a 10uF bulk capacitor placed within 5mm of the pin. During full refresh, the charge pump draws short bursts of up to 20 mA; if the host supply cannot sustain this, the panel will show ghosting or partial updates.
Always poll the BUSY_n line before issuing the next SPI command. The SSD1681 keeps BUSY_n low during the 2-second refresh window, and starting a new transfer while BUSY_n is asserted will corrupt the frame buffer. A 100 ms timeout guard on the host side prevents hung SPI transactions if the panel fails to assert BUSY_n high.
Route SPI signals (SCL, SDA, CS_n, RES_n, BUSY_n, D/C) as short parallel traces with ground shielding. Keep analog high-voltage traces (VPP, VNN, VCOM, source/gate outputs) physically separated from SPI logic lines to avoid coupling noise into the host MCU. Place the e-Paper FPC tail connector as close to the SSD1681 as the panel mechanical constraints allow; long flex traces attenuate the gate driver signals and degrade refresh quality.
Add a 100 nF X7R decoupling cap directly at VCI, VDDIO, and each charge-pump capacitor pad. The four charge-pump capacitors (one each for VPP, VNN, and their respective flying caps) must be 1 uF X7R 25V or higher, placed within 2 mm of the IC pads. Keep the ground pour unbroken under the IC's thermal pad; the SSD1681 dissipates 30-50 mW during refresh.
Información de cumplimiento
RoHS compliant per Solomon Systech product page. Not AEC-Q100 qualified (consumer/industrial EPD application). Halogen-free and conflict-mineral declarations not explicitly stated in verified web data; marked unknown.
