Rabbit Rabbit 4000, User Manual

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6 Rabbit 4000 Microprocessor User’s Manual
1.5 Comparing Rabbit Microprocessors
The Rabbit 2000, Rabbit 3000, and Rabbit 4000 features are compared below.
Feature Rabbit 4000 Rabbit 3000 Rabbit 2000
Maximum Clock Speed, industrial
Maximum Clock Speed, commercial
60 MHz
60 MHz
55.5 MHz
58.8 MHz
30 MHz
30 MHz
Maximum Crystal Frequency Main
Oscillator (may be doubled internally up
to maximum clock speed)
60 MHz 30 MHz 30 MHz
32.768 kHz Crystal Oscillator External External Internal
Operating Voltage, core
Operation Voltage, I/O
1.8 V ± 10%
3.3 V or 1.8 V
± 10%
3.3 V ± 10% 5.0 V ± 10%
Maximum I/O Input Voltage 3.6 V 5.5 V 5.5 V
Current Consumption
0.35 mA/MHz
@ 3.3 V
2 mA/MHz @ 3.3 V 4 mA/MHz @ 5 V
Number of Package Pins 128 128 100
Size of Package, LQFP/PQFP
Spacing Between Package Pins
16 × 16 × 1.5 mm
0.4 mm (16 mils)
16 × 16 × 1.5 mm
0.4 mm (16 mils)
24 × 18 × 3 mm
0.65 mm (26 mils)
Size of Package, TFBGA
Spacing Between Package Pins
10 × 10 × 1.2 mm
0.8 mm
10 × 10 × 1.2 mm
0.8 mm
Not available
Separate Power and Ground for I/O
Buffers (EMI reduction)
Yes Yes No
Clock Spectrum Spreader Yes Yes Rabbit 2000B/C
Clock Modes
1×, 2×, /2, /3,
/4, /6, /8
1x, 2x, /2, /3
/4, /6, /8
1x, 2x, /4, /8
Powerdown Modes, sleepy
Powerdown Modes, ultra sleepy
32 kHz
16, 8, 2 kHz
32 kHz
16, 8, 2 kHz
32 kHz
Low-Power Memory Control
Short and
Self-Timed Chip
Selects
Short and
Self-Timed Chip
Selects
None
Extended Memory Timing for High-
Frequency Operation
Yes Yes Rabbit 2000C
Number of 8-bit I/O Ports 5 7 5
Auxiliary I/O Data/Address Bus Yes Yes None
Number of Serial Ports 6 6 4
Serial Ports Capable of SPI/Clocked Serial 4 (A, B, C, D) 4 (A, B, C, D) 2 (A, B)
Serial Ports Capable of SDLC/HDLC 2 (E, F) 2 (E, F) None