[BRIGHT Microelectronics Inc.]

GENERAL DESCRIPTION
The BM29F400 is an 4 Megabit, 5.0 volt-only CMOS Flash memory device organized as a 512 Kbytes of 8-bits each, or 256 Kbytes of 16 bits each. The device is offered in standard 44-pin SOP and 48-pin TSOP packages. It is designed to be programmed and erased in-system with a 5.0 volt power-supply and can also be reprogrammed in standard EPROM programmers.

FEATURES
 • 5.0 V +/- 10% Program and Erase
    - Minimizes system-level power requirements High performance
    - 90 nS access time
 • Compatible with JEDEC-standard Commands
    - Uses software commands, pinouts, and packages following industry standards for single power supply Flash memory
 • Typically 100,000 Program/Erase Cycles
 • Sector Erase Architecture
    - One 16 Kbytes, two 8 Kbytes, one 32 Kbytes, and seven 64 Kbytes
    - Any combination of sectors can be erased concurrently; also supports full chip erase
 • Erase Suspend/Resume
    - Suspend a sector erase operation to allow a data read in a sector not being erased within the same device
 • Ready/Busy
    - RY/BY output pin for detection of programming or erase cycle completion
 • RESET
    - Hardware pin resets the internal state machine to the read mode
 • Internal Erase Algorithms
    - Automatically erases a sector, any combination of sectors, or the entire chip
 • Internal Programming Algorithms
    - Automatically programs and verifies data at a specified address
 • Low Power Consumption
    - 20 mA typical active read current for Byte Mode
    - 28 mA typical active read current for Word Mode
    - 30 mA typical write/erase current
 • Sector Protection
    - Hardware method disables any combination of sectors from a program or erase operation
 • Boot Code Sector Architecture