mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 546

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Signal Descriptions
24.1.2 Features
Key Mini-FlexBus features include:
24.1.3 Modes of Operation
The external interface is a configurable multiplexed bus set to one of the following
modes:
24.2 Signal Descriptions
This section describes the external signals involved in data-transfer operations.
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• Two independent, user-programmable chip-select signals (FB_CS[1:0]) that can
• 8- and 16-bit port sizes with configuration for multiplexed or non-multiplexed
• 8-bit, 16-bit, 32-bit, and 16-byte transfers
• Programmable address-setup time with respect to the assertion of chip select
• Programmable address-hold time with respect to the negation of chip select and
• Extended address latch enable option helps with glueless connections to synchronous
• Up to a 20-bit address (non-multiplexed) with 8-bit data
• Up to a 20-bit address (multiplexed) with 16-bit data (write masking of upper/lower
• Up to a 20-bit address (multiplexed) with 8-bit data
interface with external SRAM, PROM, EPROM, EEPROM, flash, and other
peripherals
address and data buses
transfer direction
and asynchronous memory devices
bytes not supported)
Not all of the following signals may be available on a particular
device. See the Chip Configuration details for information on
which signals are available.
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
NOTE
Freescale Semiconductor, Inc.