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User’s Manual 7
1.3 Differences Rabbit 3000 vs. Rabbit 2000
For the benefit of readers who are familiar with the Rabbit 2000 microprocessor the Rab-
bit 3000 is contrasted with the Rabbit 2000 in the table below.
Feature Rabbit 3000 Rabbit 2000
Maximum clock speed 54 MHz 30 MHz
Maximum crystal frequency main oscillator (may be
doubled internally)
30 MHz 32 MHz
32.768 kHz crystal oscillator External Internal
Maximum operating voltage 3.6 V 5.5 V
Maximum I/O input voltage 5.5 V 5.5 V
Current consumption 2 mA/MHz @ 3.3 V 4 mA/MHz @5 V
Number of package pins 128 100
Size of package
16 × 16 × 1.5 mm LQFP
10 × 10 × 1.2 mm
TFBGA
24 × 18 × 3 mm PQFP
Spacing between package pins
0.4 mm (16 mils) LQFP
0.8 mm TFBGA
0.65 mm (26 mils) PQFP
Separate power and ground for I/O buffers (EMI
reduction)
Yes No
Clock Spectrum Spreader (EMI reduction) Yes
Rabbit 2000B and
Rabbit 2000C versions.
Clock Modes 1x, 2x, /2, /3, /4, /6, /8 1x, 2x, /4, /8
Power Down Modes
Sleepy (32 kHz)
Ultra-Sleepy
(16, 8, 2 kHz)
Sleepy (32 kHz)
Low Power Memory Control (Chip Select)
Short CS (CLK /4 /6 /8)
Self Timed
(32,16,8,2 kHz)
None
Extended memory timing for high freq. operation Yes No
Number of 8-bit I/O ports 7 5
Auxiliary I/O Data/Address bus Yes None
Number of serial ports 6 4
Serial ports capable of SPI/clocked serial 4 (A, B, C, D) 2 (A, B)
Serial ports capable of SDLC/HDLC 2 (E, F) None
Asynch serial ports with support for IrDA
communications
6None