668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 49
668-0010
Manufacturer Part Number
668-0010
Description
IC MPU RABIT3000 55.5MHZ 128LQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0011.pdf
(312 pages)
Specifications of 668-0010
Rohs Status
RoHS non-compliant
Processor Type
Rabbit 3000 8-Bit
Speed
55.5MHz
Voltage
2.5V, 2.7V, 3V, 3.3V
Mounting Type
Surface Mount
Package / Case
128-LQFP
Features
-
Other names
316-1016
- Current page: 49 of 312
- Download datasheet (2Mb)
5. M
M
EMORY
ANAGEMENT
5.1 Overview
The Rabbit 3000 supports 8-bit external flash and SRAM devices; three chip selects and
two read/write-enable strobes allow up to six external devices to be attached at once. The
8-bit mode allows 0, 1, 2, or 4 wait states to be specified for each device.
The Rabbit 3000’s physical memory space contains four consecutive banks, each of which
can be mapped to an individual chip-select/enable strobe pair. The banks can be set for
equal sizes ranging from 128 KB up to 4 MB, providing a total physical memory range
from 512 KB up to 16 MB. Figure 5-1 shows a sample configuration.
Figure 5-1. Mapping Rabbit 3000 Physical Memory Space
Chapter 5 Memory Management
39
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