| Rabbit 4000 / Rabbit 3000 /
Rabbit 2000 Features Comparison |
| Feature |
Rabbit 4000 |
Rabbit 3000 |
Rabbit 2000 |
| Maximum clock speed |
60 MHz |
55 MHz |
30 MHz |
Maximum crystal frequency main
oscillator
(may be doubled internally) |
60 MHz |
27 MHz |
32 MHz |
| 32.768 kHz oscillator |
External |
External |
Internal |
| Maximum operating voltage |
1.8 V (core)
3.3 V or 1.8 V (I/O) |
3.6 V |
5.5 V |
| Maximum I/O input voltage |
3.6 V |
5.5 V |
5.5 V |
| Operating current |
0.35 mA/MHz @ 3.3 V |
2 mA/MHz @ 3.3 V |
4 mA/MHz @ 5 V |
| Package size |
16 × 16 × 1.5 mm LQFP
or
10 × 10 × 1.2 mm TFBGA |
16 × 16 × 1.5 mm LQFP
or
10 × 10 × 1.2 mm TFBGA |
24 × 18 × 3 mm PQFP |
| Number of package pins |
128 pins or balls |
128 pins or balls |
100 |
| Spacing between package pins |
0.4 mm (16 mils) on LQFP |
0.4 mm (16 mils) on LQFP |
0.65 mm (26 mils) PQFP |
Clock spectrum spreader
(EMI reduction) |
Yes |
Yes |
Yes |
| Additional low-EMI circuitry |
Yes |
Yes |
No |
| Clock modes |
1x, 2x, /2, /3, /4, /6, /8 |
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)
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)
Current consumption, sleepy: ~20 mA |
Short CS (CLK /4 /6 /8)
Self-timed (32, 16, 8, 2 kHz)
Current consumption, sleepy: ~20 mA |
None |
Extended memory timing for
high-frequency operation |
Yes |
Yes |
Yes |
| Number of 8-bit I/O ports/Digital
I/O |
5/40 |
7/56 |
5/40 |
| Auxiliary I/O data/address bus |
Yes |
Yes |
No |
| 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 |
| Async serial ports with support
for IrDA communications |
6 |
6 |
None |
| Serial ports with support for SDLC/HDLC
|
2 |
2 |
None |
| Maximum asynchronous baud rate |
Clock speed/8 |
Clock speed/8 |
Clock speed/32 |
| Input pulse capture unit |
2 |
2 |
None |
Quadrature encoder inputs
(quadrature decoders) |
2 |
2 |
None |
| Dedicated PWM outputs |
4 |
4 |
None |
| Glueless memory and I/O interface |
6 memory devices
8 I/O devices |
6 memory devices
8 I/O devices |
6 memory devices
8 I/O devices |
| Battery backable real-time clock |
Yes |
Yes |
Yes |
| Watchdog timer/supervisor |
Yes |
Yes |
Yes |
| Timers |
Ten 8-bit timers
One 10-bit timer
One 16-bit timer |
Ten 8-bit timers
One 10-bit timer |
Five 8-bit timers
One 10-bit timer |
| Slave interface |
Yes |
Yes |
Yes |
| Remote cold boot |
Asynchronous IrDA
Asynchronous serial
Synchronous serial
Parallel (slave interface) |
Asynchronous IrDA
Asynchronous serial
Synchronous serial
Parallel (slave interface) |
Asynchronous serial
Synchronous serial
Parallel (slave interface) |
