Here is the description of the ST M29F049B-90K6 chip:
The ST M29F049B-90K6 is a Flash memory chip with the following characteristics and functions:
Memory Capacity and Organization
- It has a memory capacity of 4 Mbit (megabits). The memory is organized in a specific layout to enable efficient storage and retrieval of data. It is divided into sectors and pages, which allows for granular access and programming. For example, it might have multiple sectors, each containing a certain number of pages, facilitating easy management of data storage and erasure.
Speed and Timing
- The “90” in its part number indicates its access speed. It has a relatively fast access time of 90 ns (nanoseconds), which means it can quickly read data from the memory when requested by the system. This speed is suitable for applications that require rapid data access, such as in embedded systems where the processor needs to quickly retrieve program code or data.
Voltage Requirements
- It operates at specific supply voltages. Typically, it requires a 3.3V power supply for normal operation. The chip is designed to be stable and reliable within a certain voltage tolerance range to ensure consistent performance in different electrical environments.
Programming and Erasing
- The M29F049B-90K6 is a Flash memory, which means it can be electrically programmed and erased. It supports in – system programming (ISP) and in – circuit serial programming (ICSP) methods. The programming process allows data to be written into the memory cells, and the erasure process can clear entire sectors or the entire chip, enabling the reuse of the memory for new data storage. This makes it suitable for applications where the stored data needs to be updated or modified over the life of the device.
Package and Pinout
- The chip comes in a specific package, such as a small – outline integrated circuit (SOIC) or a thin – small – outline package (TSOP). The package has a set of pins that provide the electrical connections to the chip. These pins include power supply pins, ground pins, address pins, data pins, and control pins. The address pins are used to select the specific memory location for reading or writing, the data pins transfer the actual data, and the control pins manage operations such as chip enable, read – write control, and output enable.
ST M29F049B-90K6 is a reliable and widely – used Flash memory chip that offers a good combination of memory capacity, speed, and programmability for various applications in the field of embedded systems, such as storing firmware, configuration data, and user – generated content in devices like microcontrollers, digital cameras, and portable media players.
