Figure 4.7 Block Diagram Of Port 6 Pin; Port 6 - Fujitsu F2MC-8L MB89620 Series Hardware Manual

7
4.

Port 6

Port 6 is an input-only port that also serves as an external interrupt input. This section
principally describes the port functions when operating as an input-only port.
The section describes the port structure and pins, the pin block diagram, and the port
register for port 6.
n Structure of Port 6
Port 6 consists of the following two components:
• Input-only pins/external interrupt input pins (P60/INT0 to P63/INT3 and P64)
• Port 6 data register (PDR6)
n Port 6 Pins
Port 6 consists of six input pins of a hysteresis input type, and can be used as input-only ports.
P60/INT0 to P63/INT3 can simultaneously be used as an external interrupt input.
Table 4.7a lists the port 6 pins.
Table 4.7a Port 6 Pin
Port
Port 6
Reference: See Section 1.7, "I/O Pins and Pin Functions" for a description of the circuit type.
n Block Diagram of Port 6 Pin
SPL: Pin state specification bit in the standby control register (STBC)
112
CHAPTER 4 I/O PORTS
Pin name Function
P60/INT0 P60 Input-only
P61/INT1 P61 Input-only
P62/INT2 P62 Input-only
P63/INT3 P63 Input-only
P64 P64 Input-only
PDR (Port data register)
PDR read
To external interrupts

Figure 4.7 Block Diagram of Port 6 Pin

Shared peripheral
INT0 External interrupt input 0
INT1 External interrupt input 1
INT2 External interrupt input 2
INT3 External interrupt input 3
—
Input buffer
I/O type
Circuit
type
Input Output
Hysteresis —
Pull-up resistor
(optional)
Approx. 50 kΩ /5.0 V
Pin
MB89620 series
I