101-0360 Rabbit Semiconductor, 101-0360 Datasheet - Page 51

• Manufacturer Part Number: 101-0360
• Description: KIT DEV RABBIT 2000 INT'L
• Manufacturer: Rabbit Semiconductor
• Series: RabbitCore 2000r
• Type: MPU Moduler

Specifications of 101-0360

• Contents: RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
• For Use With/related Products: RCM2000, RCM2010, RCM2020
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 101-360; 101-360

The values from the table above are derived using 55 ns (25.8 MHz version) and 90 ns
(18.4 MHz version) memory access times. External capacitive loading can be improved
by 10 pF for commercial temperature ranges, but do not exceed 100 pF. See the AC timing
specifications in the Rabbit 2000 Microprocessor User’s Manual for more information.
Figure A-4 shows a typical timing diagram for the Rabbit 2000 microprocessor memory
read and write cycles.
Figure A-4. Memory Read and Write Cycles
T
is the time required for the address output to reach 0.8 V. This time depends on the
adr
bus loading. A0 has a stronger driver and can handle larger capacitive loads than the other
address lines. T
is the data setup time relative to the clock. Tsetup is specified from
setup
30%/70% of the V
voltage level. Add 1.5 ns to T
for each 10 pF of additional bus
DD
adr
loading above 70 pF.
User’s Manual
47