DS80C320-ECD DALLAS [Dallas Semiconductor], DS80C320-ECD Datasheet - Page 26
DS80C320-ECD
Manufacturer Part Number
DS80C320-ECD
Description
High-Speed Microcontroller User Guide
Manufacturer
DALLAS [Dallas Semiconductor]
Datasheet
1.DS80C320-ECD.pdf
(175 pages)
- Current page: 26 of 175
- Download datasheet (2Mb)
MD2, MD1, MD0
Bits 2-0
Stretch MOVX Select 2-0. These bits select the time by which external MOVX
cycles are to be stretched. This allows slower memory or peripherals to be
accessed without using ports or manual software intervention. The RD or WR
strobe will be stretched by the specified interval, which will be transparent to the
software except for the increased time to execute to MOVX instruction. All
internal MOVX instructions on devices containing MOVX SRAM are
performed at the 2 machine cycle rate.
MD2
0
0
0
0
1
1
1
1
MD1
0
0
1
1
0
0
1
1
MD0
0
1
0
1
0
1
0
1
26 of 175
Stretch Value MOVX Duration
0
1
2
3
4
5
6
7
High-Speed Microcontroller User’s Guide
2 Machine Cycles
3 Machine Cycles
4 Machine Cycles
5 Machine Cycles
6 Machine Cycles
7 Machine Cycles
8 Machine Cycles
9 Machine Cycles
(reset default)
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