Specifications
| Diagonal size | 3.5" |
|---|---|
| Manufactured by | Shenzhen PengJi Photoelectricity Co., Ltd. (direct factory) |
| Resolution | 320×480 |
| Panel type | TN |
| Interface | SPI |
| Driver IC | ST7796S |
| Pixel pitch (mm) | 0.153 * 0.153 mm |
| Touch | None |
| Brightness | 250 cd/m² (nits) |
| Viewing angle | 12 O’clock viewing direction |
| Colors | 65K |
| Outline (mm) | 54.48 (W) * 84.71 (H) * 2.20(T) mm |
| Active area (mm) | 48.96(W) * 73.44(H) mm |
Data sources
- Specifications from the product page of the factory that builds the PJ3501I12-22H16P250 (Shenzhen PengJi Photoelectricity Co., Ltd.).
- Brightness is the standard-backlight typical value encoded in the PengJi part number (e.g. …P400 = 400 cd/m²), cross-checked against PengJi's product table and datasheets; other backlight levels can be built.
- Confirm final values against the datasheet supplied with samples.
Integration calculations
Figures below are calculated from the PJ3501I12-22H16P250’s 320×480 resolution and SPI, so you can size the host before requesting samples. Refresh rates are theoretical bus limits; real throughput is lower once command overhead and rendering time are included.
| Pixel density | 165 PPI |
|---|---|
| Native orientation | Portrait (320×480); rotate in the driver for landscape UIs |
| Full frame buffer | 300 KB at RGB565 · 450 KB at RGB888 |
| SPI full-frame refresh (RGB565, theoretical) | 16 fps at 40 MHz · 33 fps at 80 MHz |
At 250 cd/m² it is sized for indoor use; the backlight can be upgraded for brighter environments.
Hosts with a native SPI peripheral
SPI up to 80 MHz; the 300 KB RGB565 frame fits in internal SRAM.
- STM32, RP2040, nRF52
Any MCU with an SPI peripheral and DMA; partial-buffer rendering keeps RAM use low.
Interface support is based on each processor’s published display peripherals, not a bench test of this module. Ask us for tested init code.
Alternatives in the catalog
Other 3.5" options
- PJT350P15H50-400P54C3.5" 320×240 · RGB (parallel) · TN · 400 nits
- PJ3502B01-32H54P4003.5" 320×240 · RGB (parallel) · IPS · 400 nits
- PJT350P15H32-400P54N3.5" 320×240 · RGB (parallel) · TN · 400 nits
- PJ3501I01-34H54P3003.5" 320×240 · RGB (parallel) · IPS · 300 nits
- PJ3506G01-31H30P200C3.5" 480×640 · MIPI DSI · TN · 200 nits
- PJ3501I09-34H40P200R3.5" 320×480 · MCU (8080 parallel) · TN · 200 nits
Frequently asked questions
What is the brightness of the PJ3501I12-22H16P250?
250 cd/m² typical with the standard backlight. At 250 cd/m² it is sized for indoor use; the backlight can be upgraded for brighter environments.
What interface does the PJ3501I12-22H16P250 use?
SPI. The driver IC is the ST7796S. Pin definition and timing are in the datasheet, which you can request on this page.
Which processors can drive the PJ3501I12-22H16P250?
ESP32 / ESP32-S3: SPI up to 80 MHz; the 300 KB RGB565 frame fits in internal SRAM. STM32, RP2040, nRF52: Any MCU with an SPI peripheral and DMA; partial-buffer rendering keeps RAM use low.
What is the MOQ and lead time for the PJ3501I12-22H16P250?
Samples start from 1 pc. Production MOQ and lead time depend on quantity and any customization (FPC length, backlight, touch), and are agreed per project with our sales team. Send your annual volume and target date for a quote.
