20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 153

• Manufacturer Part Number: 20-668-0011
• Description: IC MPU RABIT3000A 55.5MHZ128LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0011

• Processor Type: Rabbit 3000 8-Bit
• Speed: 55.5MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 55.5 MHz
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 55 C
• Number Of Programmable I/os: 56
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 316-1061

18.2.4 Interrupts
In the asynchronous mode, a serial port interrupt can be generated whenever a byte is
available in the receive buffer or when a byte is finished being transmitted out of the trans-
mit buffer. In the HDLC mode, interrupts are also generated by the reception of an end-of-
frame (with abort, valid CRC, or CRC error), at the end of a transmission of a CRC, by an
abort sequence, or by a closing flag.
The serial port interrupt vectors are located in the IIR as follows.
• Serial Port E at offset 0x1C0
• Serial Port F at offset 0x1D0
Each of them can be set as Priority 1, 2, or 3 in SxCR, where x is E – F for the two serial
ports.
Chapter 18 Serial Ports E – F
143