20-668-0003 Rabbit Semiconductor, 20-668-0003 Datasheet - Page 102

• Manufacturer Part Number: 20-668-0003
• Description: IC CPU RABBIT2000 30MHZ 100PQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0003

• 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
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 30 MHz
• Operating Supply Voltage: 0 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 40
• Number Of Timers: 8 & 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 20-668-0003; 316-1062

8.4 Allocation of Extended Code and Data
The Dynamic C compiler compiles code to root code space or to extended code space.
Root code starts in low memory and compiles upward.
Allocation of extended code starts above the root code and data. Allocation normally con-
tinues to the end of the flash memory.
Data variables are allocated to RAM working backwards in memory. Allocation normally
starts at 52K in the 64K D space and continues. The 52K space must be shared with the
root code and data, and is allocated upward from zero.
Dynamic C also supports extended data constants. These are mixed in with the extended
code in flash.
96
Debug
64K
56K
52K
Variables
Figure 8-3. Example of Memory Mapping and Memory Usage
xcode
window
Stack
Root
code
Rabbit 2000 Microprocessor User’s Manual
0K
1024K
512K
Variables
Stacks
Extended code
Root code and constants
Available RAM