MB91F376G Fujitsu Components, MB91F376G Datasheet - Page 111

• Manufacturer Part Number: MB91F376G
• Manufacturer: Fujitsu Components

Specifications of MB91F376G

• Lead Free Status / Rohs Status: Not Compliant

4. I/O Ports
The I
and the
The bits in PDRs correspond to the bits in DDRs and PFRs. Similarly, the register bits correspond to the port pins.
The port data registers contain the port I/O data and the data direction registers specify whether the correspond-
ing bits (pins) are inputs or outputs. Bits set to “0” are inputs and bits set to “1” are outputs. The port function
registers specify whether the port is used as peripheral port or as “I/O” port. Usually bits set to “0” mean I/O port
and bits set to “1” mean functional port.
In case of analog peripherals there is additional circuitry to ensure that the digital logic is not disturbed by the
analog signals. If the analog input function e.g. ADC is enabled the digital input is fixed to “0”.
• Input mode (DDR = “0”)
• Output mode (DDR = “1”)
PDR read : Reads the level on the corresponding external pin.
PDR write : writes the PDR setting value.
PDR read : Reads the PDR value.
PDR write : Outputs the PDR value to the corresponding external pins.
/
O port registers consist of the
“
port function registers
(
PFR
“
) ”
port data registers
.
(
PDR
) ”,
MB91360G Series
the
“
data direction registers
(
DDR
) ”
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