ZD25D40 Overview
The 25D40/20 is a 4 Megabit (512K-byte) / 2 Megabit (256K-byte) Serial Flash memory, with advanced write protection mechanisms. The 25D40/20 supports the standard Serial Peripheral Interface (SPI), and a high performance Dual output using SPI pins: Serial Clock, Chip Select, Serial DIO, DO, WP#.
ZD25D40 Key Features
- Full voltage range: 2.7-3.6 volt
- 4 M-bit/512 K-byte, 2 M-bit/256 K-byte
- 256 bytes per programmable page
- Uniform 4K-byte Sectors/64K-byte Blocks
- Standard SPI: CLK, CS#, DI, DO, WP#
- Dual SPI: CLK, CS#, DIO, DO, WP#
- Fast Read Dual Output instruction
- Auto-increment Read capability
- 85MHz clock rate for one data bit
- 80MHz clock rate for two data bits