20-668-0003 Rabbit Semiconductor, 20-668-0003 Datasheet - Page 105

• 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

The Rabbit has five 8-bit parallel ports designated A, B, C, D and E. The pins used for the
parallel ports are also shared with numerous other functions as shown in Table 5-2. The
important properties of the ports are summarized below.
• Port A—Shared with the slave port data interface.
• Port B—Shared with control lines for slave port and clock I/O for clocked serial mode
• Port C—Shared with serial port serial data I/O.
• Port D—4 bits shared with alternate I/O pins for serial ports A and B. 4 bits not shared.
• Port E—All bits of Port E can be configured as I/O strobes. 4 bits of port E can be used
Chapter 9 Parallel Ports
option for serial ports A and B.
Port D has the ability to configure its outputs as open drain outputs. Port D has output
preload registers that can be clocked into the output registers under timer control for
pulse generation. Port D bits 0–3 have a higher current drive capability.
as external interrupt inputs. One bit of port E is shared with the slave port chip select.
Port E has output preload registers that can be clocked into the output registers under
timer control for pulse generation.
9. P
ARALLEL
P
ORTS
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