The ZB25VQ40/20 support the standard Serial Peripheral Interface (SPI), Dual/Quad I/O SPI as well as  2-clocks instruction cycle Quad Peripheral Interface : Serial Clock, Chip Select, Serial Data I/O0 (DI), I/O1  (DO), I/O2 (WP#), and I/O3 (HOLD# / RESET#). SPI clock frequencies of up to 104MHz are supported  allowing equivalent clock rates of 208MHz (104MHz x 2) for Dual I/O and 416MHz (104MHz x 4) for Quad I/O  when using the Fast Read Dual/Quad I/O . These transfer rates can outperform standard Asynchronous 8 and  16-bit Parallel Flash memories. The Continuous Read Mode allows for efficient memory access with as few as  8-clocks of instruction-overhead to read a 24-bit address, allowing true XIP (execute in place) operation.
      A Hold pin, Write Protect pin and programmable write protection, with top or bottom array control, provide further control flexibility. Additionally, the device supports JEDEC standard manufacturer and device ID and  SFDP Register, a 64-bit Unique Serial Number and three 256-bytes Security Registers.
      The ZB25VQ40/20 provides an ideal storage solution for systems with limited space, signal connections,  and power. These memories' flexibility and performance is better than ordinary serial flash devices. They are  ideal for code shadowing to RAM, executing code directly (XIP), and storing reprogrammable data.

FEATURES
? Low power supply operation
- Single 2.3V-3.6V supply
? 4M/2M bit Serial Flash
- 4 M-bit/512K-byte/2,048 pages
- 2 M-bit/256K-byte/1,024 pages
- 256 bytes per programmable page
- Uniform 4K-byte Sectors, 32K/64K-byte Blocks
? New Family of SpiFlash Memories
- Standard SPI: CLK, CS#, DI, DO, WP#, HOLD#  / RESET#
- Dual SPI: CLK, CS#, DI, DO, WP#, HOLD# /  RESET#
- Quad SPI: CLK, CS#, IO0, IO1, IO2, IO3 - Software & Hardware Reset
- Auto-increment Read capability
? Temperature Ranges
- Industrial (-40°C to +85°C)
- Extended (-20°C to +85°C)
? Low power consumption
- 9 mA typical active current
- 2 uA typical power down current
? Efficient “Continuous Read” and Quad Read
- Continuous Read with 8/16/32/64-Byte Wrap
- As few as 8 clocks to address memory
- Quad Peripheral Interface reduces instruction  overhead
? Flexible Architecture with 4KB sectors
- Sector Erase (4K-bytes)
- Block Erase (32K/64K-bytes)
- Page Program up to 256 bytes
- More than 100K erase/program cycles
- More than 20-year data retention
? Advanced Security Feature
- Software and Hardware Write-Protect
- Power Supply Lock-Down and OTP  protection
- Top/Bottom, Complement array protection
- 64-Bit Unique ID for each device
- Discoverable parameters(SFDP) register
- 3X256-Bytes Security Registers with OTP  locks
- Volatile & Non-volatile Status Register Bits
? High performance program/erase speed
- Page program time: 600us typical
- Sector erase time: 40ms typical
- Block erase time: 200ms typical
- Chip erase time: 1.5s typical
? Package Options
- SOP8 - 150mil/208mil
- TFBGA24
- TSSOP8 - 173mil
- DFN8 (2*3*0.55mm)
- All Pb-free packages are RoHS compliant