Datasheet

Section 8 I/O Ports
Rev. 2.00 Sep. 28, 2009 Page 246 of 870
REJ09B0429-0200
8.14.4 Pin Functions
Port E pins can also function as LPC input/output pins. The pin function is switched according to
whether the LPC module is enabled or disabled. The LPC is disabled when all of the bits LPC1E,
LPC2E, and LPC3E in HICR0 and SCIFE in HICR5 are cleared to 0.
• PE7/SERIRQ
The pin function is switched as shown below according to whether the LPC is enabled or
disabled and the PE7DDR bit.
LPC Disabled Enabled
PE7DDR 0 1 X
Pin function PE7 input pin PE7 output pin SERIRQ input/output pin
[Legend] X: Don't care.
• PE6/LCLK
The pin function is switched as shown below according to whether the LPC is enabled or
disabled and the PE6DDR bit.
LPC Disabled Enabled
PE6DDR 0 1 X
Pin function PE6 input pin PE6 output pin LCLK input pin
[Legend] X: Don't care.
• PE5/LRESET
The pin function is switched as shown below according to whether the LPC is enabled or
disabled and the PE5DDR bit.
LPC Disabled Enabled
PE5DDR 0 1 X
Pin function PE5 input pin PE5 output pin LRESET input pin
[Legend] X: Don't care.