HD64F2168 Datasheet, PDF (269/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

SSE
C/A
CEK1
PA1DDR
Address 13
Pin function
0


0
1
1
PA1 input pin
KIN9 input pin
PA1 output pin
/EVENT1 input pin
1
0
A17 output pin
1
1
1


SSE2I input pin
• PA0 /KIN8/EVENT0/A16/SSE0I
The function of port A pins is switched as shown below according to the combination of the
SSE bit in SEMR of SCI_0, the C/A bit in SMR, the CKE1 bit in SCR, address 13 setting, and
the PA0DDR bit.
When the KMIM8 bit in KMIMRA of the interrupt controller is cleared to 0, this pin can be
used as the KIN8 input pin. To use this pin as the KIN8 input pin, clear the PA0DDR bit to 0.
When this pin is used as EVENT0 input pin according to bits ECSB3 to ECSB0 in ECCR of
the data transfer controller settings, clear the PA0DDR bit to 0. Though this pin has been set to
the EVENT0 input pin, to use as the PA0 or A16 output pin, set the PA0DDR bit to 1.
SSE
C/A
CKE1
PA0DDR
Address 13
Pin function
0


0
1
1
PA0 input pin
KIN8 input pin
PA0 output pin
/EVENT0 input pin
1
0
A16 output pin
1
1
1


SSE0I input pin
Single-Chip Mode and Address-Data Multiplex Extended Mode: Port A functions as keyboard
input, external control input of SCI_0 and SCI_2, and also as an I/O port, and input or output can
be specified in bit units.
• PA7/KIN15/EVENT7, PA6/KIN14/EVENT6, PA5/KIN13/EVENT5, PA4/KIN12/EVENT4,
PA3/KIN11/EVENT3, PA2/KIN10/EVENT2
When the KMIM bit in KMIMRA of the interrupt controller is cleared to 0, this pin can be
used as the KIN input pin. To use this pin as the KIN input pin, clear the PAnDDR bit to 0.
When this pin is used as the EVENT input pin according to bits ECSB3 to ECSB0 in ECCR of
the data transfer controller settings, clear the PAnDDR bit to 0. Though this pin has been set to
the EVENT input pin, to use as the PAn output pins, set the PAnDDR bit to 1.
Rev. 3.00, 03/04, page 229 of 830