mcf5274l Freescale Semiconductor, Inc, mcf5274l Datasheet - Page 7

• Manufacturer Part Number: mcf5274l
• Description: Mcf5275 Integrated Microprocessor Family Hardware
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
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— 16-bit counter
— Low power mode support
Phase Locked Loop (PLL)
— Reference crystal 8 to 25 MHz
— Low power modes supported
— Separate CLKOUT and DDR_CLKOUT signals
Four Programmable Interrupt Timers (PITs)
Interrupt Controllers (x2)
— Support for 58 independent interrupt sources, organized as follows:
— Unique vector number for each interrupt source
— Ability to mask any individual interrupt source or all interrupt sources (global mask-all)
— Support for hardware and software interrupt acknowledge (IACK) cycles
— Combinatorial path to provide wake-up from low power modes
DMA Controller
— Four fully programmable channels
— Dual-address and single-address transfer support with 8-, 16-, and 32-bit data capability
— Source/destination address pointers that can increment or remain constant
— 24-bit transfer counter per channel
— Auto-alignment transfers supported for efficient block movement
— Bursting and cycle steal support
— Two-bus-clock internal access
— External request pins for each channel
External Memory Interface
— External glueless connections to 8-, 16-, and 32-bit external memory devices (e.g., SRAM,
— Glueless interface to SRAM devices with or without byte strobe inputs
— Programmable wait state generator
— 16-bit external bidirectional data bus
— 24-bit address bus
— Eight chip selects
— Byte/write enables
— Ability to boot from external memories that are 8 or 16 bits wide
DDR SDRAM controller
– 51 fully-programmable interrupt sources
– 7 fixed-level external interrupt sources
flash, ROM, etc.)
MCF5275 Integrated Microprocessor Family Hardware Specification, Rev. 1.1
Preliminary
Features
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