Features
– Caches are physically addressed, implement a least recently used (LRU)
replacement algorithm, and are lockable on a cache block basis.
— Instruction and data caches are two-way, set-associative, physically addressed,
LRU replacement, and lockable on-line granularity.
— MMUs with 32-entry TLB, fully associative instruction, and data TLBs
— MMUs support multiple page sizes of 4, 16, and 512 Kbytes, and 8 Mbytes; 16
virtual address spaces and 16 protection groups
— Advanced on-chip-emulation debug mode
• Up to 32-bit data bus (dynamic bus sizing for 8, 16, and 32 bits)
• 32 address lines
• Operates at up to 80 MHz
• Memory controller (eight banks)
— Contains complete dynamic RAM (DRAM) controller
— Each bank can be a chip select or RAS to support a DRAM bank
— Up to 15 wait states programmable per memory bank
— Glueless interface to DRAM, SIMMS, SRAM, EPROM, Flash EPROM, and
other memory devices.
— DRAM controller programmable to support most size and speed memory
interfaces
— Four CAS lines, four WE lines, one OE line
— Boot chip-select available at reset (options for 8-, 16-, or 32-bit memory)
— Variable block sizes (32 Kbyte to 256 Mbyte)
— Selectable write protection
— On-chip bus arbitration logic
• General-purpose timers
— Four 16-bit timers or two 32-bit timers
— Gate mode can enable/disable counting
— Interrupt can be masked on reference match and event capture
• System integration unit (SIU)
— Bus monitor
— Software watchdog
— Periodic interrupt timer (PIT)
— Low-power stop mode
— Clock synthesizer
MOTOROLA
MPC860 Family Hardware Specifications
3
MOTOROLA [ MOTOROLA ]
