AM29243EH

www.DataSheet4U.com PRELIMINARY Am29240™EH, Am29245™EH, and Am29243™EH Enhanced High-Performance RISC Microcontrollers DISTINCTIVE CHARACTERISTICS All three microcontrollers in the Am29240™EH microcontroller series have the following characteristics: Completely integrated system for embedded applications Full 32-bit architecture 4-Kbyte, two-way set-associative instruction cache 4-Gbyte virtual address space, 304-Mbyte physical space implemented Glueless system interfaces with on-chip wait state control 36 VAX MIPS (million instructions per second) sustained at 25 MHz Four banks of ROM, each separately programmable for 8-, 16-, or 32-bit interface Four banks of DRAM Single-cycle ROM burst-mode and DRAM page-mode access DRAM timing is software-programmable for 3/1 or 2/1 initial/burst access cycles 6-port peripheral interface adapter 16-line programmable I/O port Bidirectional parallel port controller Interrupt controller Fully pipelined integer unit Three-address instruction architecture 192 general purpose registers Traceable Cache™ technology instruction and data cache tracing IEEE Std 1149.1-1990 (JTAG) compliant Standard Test Access Port and Boundary Scan Architecture Binary compatibility with all 29K™ family microprocessors and microcontrollers CMOS technology/TTL compatible 208-pin Plastic Quad Flat Pack (PQFP) package 3.3-V power supply with 5-V-tolerant I/O 5/2/97 Am29240EH Microcontroller The Am29240EH microcontroller has the following additional features: 2-Kbyte...