General Description
   The S25FL204K (4-Mbit, 512-kbyte) Serial Flash memory, with advanced write protection mechanisms. TheS25FL204K supports the standard Serial Peripheral Interface (SPI), and a high performance Dual output using SPI pins: Serial Clock, Chip Select, Serial SI/IO0, SO, WP# and HOLD#. SPI clock frequencies of up to 85 MHz are supported along with a clock rate of 85 MHz for Dual Output Read.

Distinctive Features
◾ Single power supply operation
   – Full voltage range: 2.7 to 3.6V
◾ 4-Mbit Serial Flash
   – 4-Mbit/512 kbyte/2048 pages
   – 256 bytes per programmable page
   – Uniform 4-kbyte Sectors/64-kbyte Blocks
◾ Standard and Dual
   – Standard SPI: SCK, CS#, SI, SO, WP#, HOLD#
   – Dual SPI: SCK, CS#, SI/IO0, SO, WP#, HOLD#
   – Fast Read Dual Output instruction
   – Auto-increment Read capability
◾ High Performance
   – FAST READ (Serial): 85 MHz clock rate
   – DUAL OUTPUT READ: 85 MHz clock rate
◾ Low Power Consumption
   – 12 mA typical active current
   – 15 µA typical standby current
◾ Flexible Architecture with 4 kB Sectors
   – Sector Erase (4 kB)
   – Block Erase (64 kB)
   – Page Program up to 256 bytes
   – 100k erase/program cycles typical
   – 20-year data retention typical
◾ Software and Hardware Write Protection
   – Write Protect all or portion of memory via software
   – Enable/Disable protection with WP# pin
◾ High Performance Program/Erase Speed
   – Page program time: 1.5 ms typical
   – Sector erase time (4 kB): 50 ms typical
   – Block erase time (64 kB): 500 ms typical
   – Chip erase time: 3.5 seconds typical
◾ Package Options
   – 8-pin SOIC 150/208-mil
   – All Pb-free packages are RoHS compliant