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HCS12 Datasheet(PDF) 325 Page - Freescale Semiconductor, Inc

Part # HCS12
Description  HCS12 Microcontrollers
PDF  452 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

HCS12 Datasheet(HTML) 325 Page - Freescale Semiconductor, Inc

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S12CPUV2 Reference Manual, Rev. 4.0
Freescale Semiconductor
325
Figure 8-1. Queue Status Signal Timing (HCS12)
8.3.2 M68HC12 Timing Detail
In the M68HC12, data movement information is available on rising edges of
the E clock; execution start information is available on falling edges of the E
clock, as shown in Figure 8-2. Data movement information refers to data on
the bus at the previous falling edge of E. Execution information refers to the
bus cycle from the current falling edge to the next falling edge of E.
Table 8-1 summarizes the information encoded on the IPIPE1 and IPIPE0
pins.
E CLOCK
ADDRESS
DATA
IPIPE[1:0]
ADDR0
ADDR1
DATA0
DATA1
EX0
DM0
EX1
DM1
CYCLE 0
CYCLE 1
EX1 REFERS TO
THIS CYCLE
DM0 REFERS TO DATA
CAPTURED AT THE END
OF CURRENT E-HIGH PERIOD



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