SMJS833 - NOVEMBER 1997
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The TMS28F033 is the first synchronous nonvolatile flash memory device to offer a configurable burst interface to 16/32-bit microprocessors and microcontrollers operating at frequencies up to 40 MHz.
The TMS28F033 contains 4M bits of main memory that is user-configurable as either three or four independently erasable blocks. In addition to the main memory array, there is a protected overlay memory block that is normally hidden from the memory address map. The following table shows the three- and four-block main-memory-array configurations for both 16-bit and 32-bit data bus widths.
Embedded program and block-erase functions are fully automated by an on-chip write state machine (WSM), which simplifies these operations and relieves the system microcontroller of these secondary tasks. WSM status can be monitored by the on-chip status register to determine the progress of program/erase tasks.
The TMS28F033 flash memory requires 12 V for erasure and programming, and 5 V for memory-array access while interfacing with either a 3.3-V or 5-V bus.
The TMS28F033 flash memory is fabricated using CMOS technology and is packaged in an 80-pin plastic quad flatpack (PQFP) (PAF suffix).
View more information about generic part numbers:TMS28F033
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