MX25L12845GM2I-08G: High-speed, low-power 128Mb serial flash solution
Product Overview
MX25L12845GM2I-08G is a 128Mb (16MB) SPI NOR Flash memory launched by Macronix (Macronix Electronics), using the industry's mainstream serial peripheral interface (Serial Peripheral Interface, SPI), providing high-speed read and write performance, low power operation and multiple I/O configurations (including standard SPI, Dual I/O, Quad I/O mode), widely used in embedded systems that require reliable data storage.
Main technical parameters
Item Parameter Specification
Storage capacity 128Mb (16MB)
Interface type SPI / Dual SPI / Quad SPI
Maximum main frequency 104 MHz (standard SPI) / 80 MHz (Quad I/O)
Write protection mechanism Programmable write protection, status register protection
Package form SOP-8 (300mil, wide body)
Operating temperature –40°C ~ +85°C (industrial grade)
Pin definition (SOP-8 package)
Pin number Name Function description
1 CS# Chip select, low level valid 2 SO Serial data output 3 WP# Write protection control pin 4 GND Ground 5 SI Serial data input 6 SCLK Serial clock input 7 HOLD# data hold control (active low) 8 VCC power input Note: HOLD# and WP# pins should be connected to pull-up resistors when not in use to ensure signal stability.
Product Features and Advantages
✅ High performance: supports Quad SPI mode up to 80 MHz, effectively increasing the read bandwidth to 320Mbps.
✅ Rich command set: supports JEDEC standard commands, strong compatibility, and easy to integrate with mainstream MCUs quickly.
✅ Programmable write protection: multi-area write protection mechanism to improve data security.
✅ Power-off data retention: non-volatile design, no content loss when power is off.
✅ Industrial-grade quality: wide operating temperature and voltage range, adaptable to complex application environments.
✅ Low-power sleep mode: sleep current as low as 1µA, very suitable for power-sensitive occasions.
Typical application areas
Embedded system program and data storage Industrial automation controller configuration storage Consumer electronics firmware storage Network equipment (router, module) firmware upgrade BIOS, UEFI and other boot storage chips IoT devices and smart terminals Typical circuit design suggestions In embedded applications, MX25L12845GM2I-08G is often connected to MCU (such as STM32, ESP32, NXP, etc.) or FPGA, and communicates through the SPI interface. The following is a simplified wiring reference: MCU <--> MX25L12845GM2I-08G --------------------------------------- SPI_CS <----> CS# SPI_CLK <----> SCLK SPI_MOSI <----> SI SPI_MISO <----> SO WP# <----> Pull up to VCC (or IO control) HOLD# <----> Pull up to VCC (or IO control) VCC <----> 3.3V GND <----> GND It is recommended to add 0.1µF and 10µF filter capacitors between VCC and GND to improve power supply stability. It is recommended to use a series resistor with a resistance of 22Ω~33Ω for the signal line to suppress reflection interference during high-speed switching.
Compatible and equivalent replacement models
Model Manufacturer Interface type Capacity Description
W25Q128JVSIQ Winbond SPI 128Mb Performance is close, widely available
S25FL128SAGMFI010 Infineon SPI 128Mb Supports enhanced security features
AT25DF128A-SH-T Microchip SPI 128Mb Supports standard SPI interface
Summary
MX25L12845GM2I-08G has become one of the main products in embedded storage solutions with its stable and reliable architecture, support for high-speed SPI interface and flexible I/O mode. Its SOP-8 wide-body package is easier for traditional PCB layout and is suitable for rapid product introduction and update. At the same time, with high durability and wide temperature adaptability, it can play a stable performance in multiple scenarios such as industrial, consumer, and automotive electronics.
