Fujitsu F2MC-8L MB89620 Series Hardware Manual page 136

4.7 Port 6
4.7.2 Operation of Port 6
This section describes the operations of the port 6.
n Operation of Port 6
Operation as an input port
l
Reading the PDR6 register always returns the pin value ("0" or "1"). The pin values can also be
returned when used as external interrupt pins.
Operation at reset
l
The PDR6 register is not initialized by a reset.
Table 4.7.2 lists the port 6 pin states.
Table 4.7.2 Port 6 Pin State
Pin name
P60/INT0 to P63/INT3
P64
SPL: Pin state specification bit in the standby control register (STBC)
Hi-z: High impedance
* : Pins with a pull-up resistor (optional) go to the pull-up state after a reset or during stop mode (when SPL="1").
Reference: See Chapter 12, "External Interrupt Circuit (Edge)" for details of pin operation when the port is
MB89620 series
Normal operation
Sleep mode
Stop mode (SPL=0)
Input-only ports/
external interrupt input
Input-only port
used as an external interrupt input.
Stop Mode
(SPL=1)
*
Hi-z
(External interrupt input)
Hi-z
CHAPTER 4 I/O PORTS
Reset
*
Hi-z
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