mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 563

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

24.4.6.3.2 Bus Cycle Sizing—Word Transfer, 16-bit Device, No Wait States
The following figure illustrates the basic word read transfer to a 16-bit device with no
wait states.
Freescale Semiconductor, Inc.
• The address is driven on the full FB_AD[19:8] bus in the first clock.
• The device tristates FB_AD[15:0] on the second clock and continues to drive address
• The external device returns the read data on FB_AD[15:0].
on FB_AD[19:16] throughout the bus cycle.
In non-multiplexed mode, the Mini-FlexBus does not support
connection to a 16-bit device.
FB_CLK
FB_A[Y]
FB_D[X]
FB_RW
FB_TS
FB_ALE
FB_CSn
FB_OEn
FB_BE/BWEn
FB_TA
FB_TSIZ[1:0]
Figure 24-19. Single Byte-Write Transfer
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Address
Preliminary
Note
Address
TSIZ=01
AA=0
AA=1
Data
AA=0
AA=1
Chapter 24 External Bus Interface (Mini-FlexBus)
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