STMicroelectronics, Inc. Memory M28W640ECB90N6

The M28W640ECB90N6 is a 64 Mbit (4Mb x16) NOR Flash memory device from Quarktwin Technology Ltd. It operates with a core power supply voltage (VDD) ranging from 2.7V to 3.6V and an input/output supply voltage (VDDQ) from 1.65V to 3.6V. The device features an access time of 90 ns and supports programming times of approximately 10 µs, with options for double word and quadruple word programming. This memory device includes multiple memory blocks, allowing for flexible organization with parameter blocks located at either the top or bottom. It has a block locking feature that secures all blocks at power-up, with the ability to lock any combination of blocks. Security features include 128-bit user programmable one-time programmable (OTP) cells and a 64-bit unique device identifier. The M28W640ECB90N6 supports 100,000 program/erase cycles per block and includes an automatic standby mode, as well as program and erase suspend capabilities. The electronic signature for the device includes a manufacturer code of 20h and a device code of 8849h. The product is available in a TSOP48 package measuring 12 x 20 mm and a TFBGA package measuring 6.39 x 10.5 mm.