668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 22

• Manufacturer Part Number: 668-0003-C
• Description: IC CPU RABBIT2000 30MHZ 100PQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 668-0003-C

• Rohs Status: RoHS non-compliant
• Processor Type: Rabbit 2000 8-Bit
• Speed: 30MHz
• Voltage: 2.7V, 3V, 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 100-MQFP, 100-PQFP
• Features: -
• Other names: 316-1004; 668-0003

The names given to the segments in the figure are evocative of the common uses for each
segment. The root segment is mapped to the base of flash memory and contains the star-
tup code as well as other code that may happen to be stored there. The data segment usage
varies depending on the overall strategy for setting up memory. It may be an extension of
16
SEGSIZE
register
D
80
79
85
7
Figure 3-3. Example of Memory Mapping Operation
DATASEG register
STACKSEG register
XPC register
10000
E000
D000
7000
0000
XPC
segment
stack segment
data segment
root segment
16-bit
address space
Rabbit 2000 Microprocessor User’s Manual
20-bit
address space
10000
0E000
85
93000
0D000
80
8D000
07000
79
80000
07000
00000