PCA9422
NXP
The system is composed of a main processor i.MX RT700, a MIPI DSI panel G1120B0MIPI, an external HyperRAM for frame buffer storage, and a PMIC PCA9422 for power management.
Application NoteNxp
i.MX RT700 MIPI DSI Display Application with Two Low-Power Use Cases
Application note for i.MX RT700 MCU implementing a MIPI DSI circular AMOLED display with PCA9422 PMIC, focusing on low-power mode implementation and evaluation.
Overview
This application note details a display demo application using the NXP i.MX RT700 crossover microcontroller and the PCA9422 PMIC. The design features a 1.2-inch circular AMOLED MIPI DSI display and external HyperRAM for frame buffer storage. The document describes the system architecture, including the integration of the Vector Graphics Processing Unit (VGPU), LCD Interface (LCDIF), and MIPI DSI Controller. It provides a technical breakdown of power domains and power supplies, specifically evaluating power consumption across VDD2, VDD1V8_MIPI, and PANEL_VCC5V0 rails. Detailed information is provided on entering and managing various low-power states such as Deep Sleep and Deep Sleep Retention (DSR) using the onboard Power Management Controller and external PMIC.
Use Cases
- Smart watches
- Wearable display devices
- Battery-operated handheld electronics
- Low-power embedded HMI systems
Topics
i.MX RT700
MIPI DSI
PCA9422
AMOLED
Low Power
VGPU
LCDIF
Deep Sleep Retention
PMIC
HyperRAM
Referenced Parts
i.MX RT700
NXP
The system is composed of a main processor i.MX RT700, a MIPI DSI panel G1120B0MIPI, an external HyperRAM for frame buffer storage, and a PMIC PCA9422 for power management.
| PCA9422 | NXP | The system is composed of a main processor i.MX RT700, a MIPI DSI panel G1120B0MIPI, an external HyperRAM for frame buffer storage, and a PMIC PCA9422 for power management. |
| i.MX RT700 | NXP | The system is composed of a main processor i.MX RT700, a MIPI DSI panel G1120B0MIPI, an external HyperRAM for frame buffer storage, and a PMIC PCA9422 for power management. |