Fujitsu MB90460 Series Hardware Manual page 538

■ Block Diagram of the DTP/external Interrupt Circuit Pins
Figure 18.3-1 Block Diagram of the DTP/external Interrupt Circuit Pins (INT0 to INT6)
RDR
Port data register (PDR)
PDR read
PDR write
Port data direction register (DDR)
DDR write
DDR read
Figure 18.3-2 Block Diagram of the DTP/external Interrupt Circuit Pins (INT7)
Port data register (PDR)
PDR read
PDR write
Port data direction register (DDR)
DDR write
DDR read
Resource output
Output latch
Direction latch
Output latch
Direction latch
CHAPTER 18 DTP/EXTERNAL INTERRUPT CIRCUIT
Resource input
Resource output enable
Standby control (SPL = 1)
Resource output
Resource input
Resource output enable
Standby control (SPL = 1)
Pull-up resistor
About 50k
Pin
Pin
External interrupt enable
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