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C167CS Datasheet(PDF) 202 Page - Infineon Technologies AG

Part # C167CS
Description  16-Bit Single-Chip Microcontroller
PDF  517 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

C167CS Datasheet(HTML) 202 Page - Infineon Technologies AG

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C167CS
Derivatives
The External Bus Interface
User’s Manual
9-14
V2.0, 2000-07
Programmable Memory Cycle Time
The C167CS allows the user to adjust the controller’s external bus cycles to the access
time of the respective memory or peripheral. This access time is the total time required
to move the data to the destination. It represents the period of time during which the
controller’s signals do not change.
Figure 9-7
Memory Cycle Time
The external bus cycles of the C167CS can be extended for a memory or peripheral,
which cannot keep pace with the controller’s maximum speed, by introducing wait states
during the access (see Figure 9-7). During these memory cycle time wait states, the
CPU is idle, if this access is required for the execution of the current instruction.
The memory cycle time wait states can be programmed in increments of one CPU clock
(2 TCL) within a range from 0 to 15 (default after reset) via the MCTC fields of the
BUSCON registers. 15 – <MCTC> waitstates will be inserted.
MCT02063
Address
Segment
ALE
BUS (P0)
Address
RD
Address
Data
BUS (P0)
WR
MCTC Wait States (1...15)
Bus Cycle
Data/Instr.



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