The 28F001BX-B and 28F001BX-T are 1 048 576 bit nonvolatile memories organized as 131 072 bytes of 8 bits They are offered in 32-pin plastic DIP 32-lead PLCC and 32-lead TSOP packages Pin assignment conform to JEDEC standards for byte-wide EPROMs These devices use an integrated command port and state machine for simplified block erasure and byte reprogramming The 28F001BX-T's block locations provide compatibility with microprocessors and microcontrollers that boot from high memory such as Intel's MCS -186 family 80286 i386 TM i486 TM i860 TM and 80960CA With exactly the same memory segmentation the 28F001BX-B memory map is tailored for microprocessors and microcontrollers that boot from low memory such as Intel's MCS-51 MCS-196 80960KX and 80960SX families All other features are identical and unless otherwise noted the term 28F001BX can refer to either device throughout the remainder of this document The boot block section includes a reprogramming write lock out feature to guarantee data integrity It is designed to contain secure code which will bring up the system minimally and download code to the other locations of the 28F001BX Intel's 28F001BX employs advanced CMOS circuitry for systems requiring highperformance access speeds low power consumption and immunity to noise Its access time provides no-WAIT-state performance for a wide range of microprocessors and microcontrollers A deep-powerdown mode lowers power consumption to 0 25 mW typical through VCC crucial in laptop computer handheld instrumentation and other low-power applications The RP power control input also provides absolute data protection during system powerup or power loss Manufactured on Intel's ETOX process base the 28F001BX builds on years of EPROM experience to yield the highest levels of quality reliability and cost-effectiveness