H8SSLASH2224 datasheet(397/1071 Pages) RENESAS

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Section 10 I/O Ports

Rev. 5.00 Aug 08, 2006 page 311 of 982

REJ09B0054-0500

10.1.4

Pin Functions

Port 1 pins also function as TPU I/O pins (TPU_0, TPU_1, and TPU_2), DMAC* output pins,

interrupt input pins and address output pins. Values of the register and pin functions are shown

below.

Note: * Supported only by the H8S/2239 Group.

• P17/TIOCB2/TCLKD

The pin functions are switched as shown below according to the combination of the TPU

channel 2 setting, TPSC2 to TPS0 bits in TCR_0 and TCR_5, and the P17DDR bit.

TPU Channel 2 Setting*

Output

Input or Initial Value

P17DDR



P17 input pin

P17 output pin

TIOCB2 output pin

TIOCB2 input pin*

Pin functions

TCLKD input pin*

Notes: 1. For the setting of the TPU channel, see section 11, 16-Bit Timer Pulse Unit (TPU).

2. This pin functions as TIOCB2 input when TPU channel 2 timer operating mode is set to

normal operating or phase counting mode and IOB3 in TIOR_2 is set to 1.

3. This pin functions as TCLKD input when TPSC2 to TPSC0 in TCR_0 or TCR_5 are set

to 111 or when channels 2 and 4 are set to phase counting mode.

• P16/TIOCA2/IRQ1

The pin functions are switched as shown below according to the combination of the TPU

channel 2 setting and the P16DDR bit.

TPU Channel 2 Setting*

Output

Input or Initial Value

P16DDR



P16 input pin

P16 output pin

TIOCA2 output pin

TIOCA2 input pin*

Pin functions

IRQ1 input pin*3

Notes: 1. For the setting of the TPU channel, see section 11, 16-Bit Timer Pulse Unit (TPU).

2. This pin functions as TIOCA2 input when TPU channel 2 timer operating mode is set to

normal operating or phase counting mode and IOA3 in TIOR_2 is 1.

3. When this pin is used as an external interrupt pin, do not specify other functions.

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