668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 70

• Manufacturer Part Number: 668-0010
• Description: IC MPU RABIT3000 55.5MHZ 128LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 668-0010

• Rohs Status: RoHS non-compliant
• 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
• Features: -
• Other names: 316-1016

There is a priority among interrupts if multiple requests are pending, as shown in Table 6-3.
Interrupts marked as “cleared automatically” have their requests cleared when the inter-
rupt is first handled.
In the case of the external interrupts the only action that will clear the interrupt request is
for the interrupt to take place, which automatically clears the request. A special action
must be taken in the interrupt service routine for the other interrupts.
60
Lowest
Priority
Highest External 1
External 0
Periodic (2 kHz)
Quadrature Decoder
Timer B
Timer A
Input Capture
Slave Port
Serial Port E
Serial Port F
Serial Port A
Serial Port B
Serial Port C
Serial Port D
Interrupt Source
Table 6-3. Interrupt Priorities
Automatically cleared by the interrupt acknowledge.
Automatically cleared by the interrupt acknowledge.
Read the status from the GCSR.
Read the status from the QDCSR.
Read the status from the TBSR.
Read the status from the TASR.
Read the status from the ICCSR.
Rd: Read the data from the SPD0R, SPD1R or SPD2R.
Wr: Write data to the SPD0R, SPD1R, SPD2R or write a dummy
byte to the SPSR.
Rx: Read the data from the SEDR or SEAR.
Tx: Write data to the SEDR, SEAR, SELR or write a dummy byte
to the SESR.
Rx: Read the data from the SFDR or SFAR.
Tx: Write data to the SFDR, SFAR, SFLR or write a dummy byte
to the SFSR.
Rx: Read the data from the SADR or SAAR.
Tx: Write data to the SADR, SAAR, SALR or write a dummy byte
to the SASR.
Rx: Read the data from the SBDR or SBAR.
Tx: Write data to the SBDR, SBAR, SBLR or write a dummy byte
to the SBSR.
Rx: Read the data from the SCDR or SCAR.
Tx: Write data to the SCDR, SCAR, SCLR or write a dummy byte
to the SCSR.
Rx: Read the data from the SDDR or SDAR
Tx: Write date to the SDDR, SDAR, SDLR or write a dummy byte
to the SDSR
Action Required to Clear the Interrupt
Rabbit 3000 Microprocessor User’s Manual