Description:The AT25QL641 is a member of our standard class code and data storage solutions designed for low voltage systems in which program code is shadowed from Flash memory into embedded or external RAM for execution.The architecture includes standard erase block sizes and a security register for unique device serialization, system-level Electronic Serial Number (ESN) storage, locked key storage, etc. Quad enabled at the factory Universally compatible pinout and command set Standard block architecture Continuous re
The recommended operating voltage range for the AT25QL641-MHE-T is 2.7V to 3.6V, as specified in the datasheet. However, it's essential to note that the device can tolerate a voltage range of 2.5V to 3.7V for a short duration, but prolonged operation outside the recommended range may affect its performance and reliability.
During power-up, the HOLD pin should be kept high (VCC) until the power supply reaches the minimum operating voltage (2.7V). During power-down, the HOLD pin should be kept low (GND) to ensure that the device is in a low-power state. This is not explicitly mentioned in the datasheet, but it's a recommended practice to ensure proper device operation.
The AT25QL641-MHE-T supports up to 100,000 erase cycles per sector, as specified in the datasheet. However, it's essential to note that the actual number of erase cycles may vary depending on the usage pattern, operating conditions, and quality of the device.
To implement a secure erase procedure, you should use the Chip Erase command (0xC7) followed by a verification process to ensure that all data is erased. Additionally, you can use the Security Registers (SR) to set the Security Bit, which will prevent any further programming or erasing of the device. It's recommended to consult the datasheet and application notes for more detailed information on secure erase procedures.
The recommended method for detecting the end of an erase or program operation is to use the RY/BY# pin, which goes low during the operation and returns high when the operation is complete. You can also use the Status Register (SR) to poll the Ready/Busy (RDY) bit, which indicates the status of the operation.
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AT25QL641-MHE-T Overview
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