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

• Manufacturer Part Number: 668-0003-C
• Description: IC CPU RABBIT2000 30MHZ 100PQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 668-0003-C

• Rohs Status: RoHS non-compliant
• 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
• Features: -
• Other names: 316-1004; 668-0003

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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