ACE25C400 Datasheet, PDF (1/31 Pages) ACE Technology Co., LTD. – 4MB Serial Flash Memory

ACE25C400
4MB Serial Flash Memory
Description
The ACE25C400 is a 4M-bit (512K-byte) Serial Flash memory, with advanced write protection mechanisms. The
ACE25C400 supports the standard Serial Peripheral Interface (SPI), and a high performance Dual output as well as
Dual I/O.
The ACE25C400 can be programmed 1 to 512 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 ACE25C400 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.
Features
 4Mbit of Flash memory
- 128 uniform sectors with 4K-byte each
- 8 uniform block with 64K-byte each
- 256 bytes per programmable page
 Wide Operation Range
- 2.7V~3.6V single voltage supply
- Industrial temperature range
 Serial Interface
- Standard SPI: CLK, CS#, DI, DO, WP#
- Dual SPI: CLK, CS#, DQ₀, DQ₁, WP#
- Continuous READ mode support
 High Performance
- Max FAST_READ clock frequency: 100MHz
- Max READ clock frequency: 66MHz
- Typical page program time: 1.5ms
- Typical sector erase time: 90ms
- Typical block erase time: 500ms
- Typical chip erase time: 3.5s
 Low Power Consumption
- Typical standby current: 1µA
 Security
- Software and hardware write protection
- Lockable 256-Byte OTP security sectors
- Low Voltage Write Inhibit
 High Reliability
- Endurance: 100,000program/erase cycles
- Data retention: 20years
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