The XT25F04BSOIGU is a FLASH SOP8-150mil RoHS package manufactured by XTX. It is a 4Mbit serial flash memory intended for use in embedded systems. It features advanced read and write performance, low power consumption and a wide operating voltage range. The XT25F04BSOIGU has read access time of 45ns and write access time of 40ns with a random address access of 3.3v @ 25MHz and 2.5v @ 15MHz. Its single supply voltage range is 2.7V- 3.6V and it operates at 25MHz and 0-70°C temperature range. This IC comes with 3V internal pull-up voltage and features write protection, auto power-down and write protection locking. The pin-out includes 8-pads; 1. VSS, 2. SI/HOLD, 3. WP, 4. CLK, 5. SO/SIO, 6. CS, 7. VCC and 8. NC.