Pins Of Dtp/External Interrupt Circuit; Fig. 16.2 Block Diagram Of Dtp/External Interrupt Circuit Pin; Table 16-3 Pins Of Dtp/External Interrupt Circuit - Fujitsu MB90420/5 (A) Series Hardware Manual

16.3 Pins of DTP/External Interrupt Circuit

The pins of the DTP/external interrupt circuit and the block diagram of pin are explained, and a block
diagram is given.
n Pins of DTP/external interrupt circuit
The pins of the DTP/external interrupt circuit also serve as general-purpose port pins. Table 16-3 shows the
function of the pins, I/O type, settings required for using the DTP/external interrupt circuit, etc.
Pin
Pin Name
Function
P50/INT0
Port 5 I/O,
P51/INT1
external
interrupt
P52/INT2
input
P53/INT3
P00/INT4
Port I/O,
P01/INT5
external
interrupt
P02/INT6
input
P03/INT7
n Block diagram of DTP/external interrupt circuit pin
PDR (Port data register)
PDR read
PDR write
DDR (Port direction register)
DDR write
DDR read

Fig. 16.2 Block Diagram of DTP/External Interrupt Circuit Pin

DTP/EXTERNAL INTERRUPT CIRCUIT

Table 16-3 Pins of DTP/External Interrupt Circuit

I/O Type
CMOS
output/CMOS
hysteresis input
Output latch
Direction latch
Pull-up Standby
Resistor Control
None None
Resource input (INT)
Standby control (SPL = 1)
16-7
Setting Required to Use Pins
Set to input port (DDR5: bit 0 = 0)
Set to input port (DDR5: bit 1 = 0)
Set to input port (DDR5: bit 2 = 0)
Set to input port (DDR5: bit 3 = 0)
Set to input port (DDR0: bit 0 = 0)
Set to input port (DDR0: bit 1 = 0)
Set to input port (DDR0: bit 2 = 0)
Set to input port (DDR0: bit 3 = 0)
Pin