20-668-0003 Rabbit Semiconductor, 20-668-0003 Datasheet - Page 147

• 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

Figure 13-4 shows a sample connection of two slave Rabbits to a master Rabbit. The mas-
ter drives the slave reset line for both slaves and provides the main processor clock from
its own clock. There is no requirement that the master and slave share a clock, but doing
so makes it unnecessary to connect a crystal to the slaves. Each Rabbit in Figure 13-4 has
to have RAM memory. The master must also have flash memory. However, the slaves do
not need nonvolatile memory since the master can cold boot them over the slave port and
download their program. In order for this to happen, the SMODE0 and SMODE1 pins
must be properly configured as shown in Figure 13-4 to begin a cold boot process at the
end of the slave reset.
Chapter 13 Rabbit Slave Port
Master writes status register
Slave writes status register
Master writes SPD0R
Slave writes SPD0R
Figure 13-3. Slave Port Handshaking and Interrupts
Visible in status register
Slave inbound interrupt requested
Visible in status register
/SLAVEATTN (PB7)
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