FUNCTIONAL DESCRIPTION The AS29F200 is a 2 megabit, 5 volt only Flash memory organized as 256K bytes of 8 bits each or 128K words of 16 bits each. For flexible erase and program capability, the 2 megabits of data is divided into 7 sectors: one 16K byte, two 8K byte, one 32K byte, and three 64K bytes. The ×8 data appears on DQ0–DQ7; the ×16 data appears on DQ0–DQ15. The AS29F200 is offered in JEDEC standard 44-pin SO and 48-pin TSOP packages. This device is designed to be programmed and erased in-system with a single 5.0V VCC supply. The device can also be reprogrammed in standard EPROM programmers. Features • Organization: 256K×8 or 128K×16 • Sector architecture - One 16K; two 8K; one 32K; and three 64K byte sectors - Boot code sector architecture—T (top) or B (bottom) - Erase any combination of sectors or full chip • Single 5.0±0.5V power supply for read/write operations • Sector protection • High speed 55/70/90/120 ns address access time • Automated on-chip programming algorithm - Automatically programs/verifies data at specified address • Automated on-chip erase algorith - Automatically preprograms/erases chip or specified sectors • 10,000 write/erase cycle endurance • Hardware RESET pin - Resets internal state machine to read mode • Low power consumption - 20 mA typical read current - 30 mA typical program current - 300 µA typical standby current - 1 µA typical standby current (RESET = 0) • JEDEC standard software, packages and pinouts - 48-pin TSOP - 44-pin SO • Detection of program/erase cycle completion - DQ7 DATA polling - DQ6 toggle bit - RY/BY output • Erase suspend/resume - Supports reading data from a sector not being erased • Low VCC write lock-out below 2.8V
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