This post explains for the flash memory.
The Part Number is PN25F08.
The function of this semiconductor is 8M-BIT SERIAL FLASH MEMORY.
The package is SOP, TSSOP 8 Pin Type
Preview images :
The PN25F08 is a 8M-bit (1M-byte) Serial Flash memory, with advanced write protection mechanisms. The device supports the standard Serial Peripheral Interface (SPI). The device can be programmed 1 to 256 bytes at a time, using the Page Program instruction. It is designed to allow either single Sector/Block at a time or full chip erase operation. The IC can be configured to protect part of the memory as the software protected mode. The device can sustain a minimum of 100K program/erase cycles on each sector or block. […]
Software/Hardware Write Protection :
1. 3×256-Byte Security Registers with OTP Lock
2. Enable/Disable protection with WP Pin
3. Write protect all/portion of memory via software
4. Top or Bottom, Sector or Block selection