AM29240EH Datasheet, PDF (1/36 Pages) Advanced Micro Devices – Enhanced High-Performance RISC Microcontrollers

PRELIMINARY
Am29240^™EH, Am29245^™EH, and
Am29243^™EH
Enhanced High-Performance RISC Microcontrollers
5/2/97
DISTINCTIVE CHARACTERISTICS
All three microcontrollers in the Am29240™EH micro-
controller 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
Am29240EH Microcontroller
The Am29240EH microcontroller has the following addi-
tional features:
2-Kbyte, two-way set-associative data cache
Single-cycle 32-bit multiplier for faster integer
math; two-cycle Multiply Accumulate (MAC)
function
16-entry on-chip Memory Management Unit
(MMU) with one Translation Look-Aside Buffer
4-channel double-buffered DMA controller with
queued reload
Two serial ports (UARTs)
Bidirectional bit serializer/deserializer
20- and 25-MHz operating frequencies
Am29243EH Microcontroller
The Am29243™EH data microcontroller is similar to the
Am29240EH microcontroller, without the video inter-
face. It includes the following features:
2-Kbyte, two-way set-associative data cache
Single-cycle 32-bit multiplier for faster integer
math; two-cycle MAC
32-entry on-chip MMU with dual TLBs
4-channel, double-buffered DMA controller with
queued reload
Two serial ports (UARTs)
20- and 25-MHz operating frequencies
DRAM parity
Am29245EH Microcontroller
The low-cost Am29245™EH microcontroller is similar to
the Am29240EH microcontroller, without the data cache
and 32-bit multiplier. It includes the following features:
16-entry on-chip MMU with one TLB
Two-channel DMA controller
One serial port (UART)
Bidirectional bit serializer/deserializer
16-MHz operating frequency
This document contains information on a product under development at Advanced Micro Devices, Inc. The information is intended
to help you evaluate this product. AMD® reserves the right to change or discontinue work on this proposed product without notice.
Publication #: 20068 Rev. A Amendment: /0
Issue Date: May 1997