Datasheet

Table Of Contents
Section 9 I/O Ports
REJ09B0140-0900 Rev. 9.00 Page 235 of 846
Sep 16, 2010
H8S/2215 Group
9.1.4 Pin Functions
Port 1 pins also function as TPU I/O pins, external interrupt input pins (IRQ1, IRQ0), external
USB transceiver input, and address bus (A23 to A20) output pins. The correspondence between
the register specification and the pin functions is shown below.
Table 9.2 P17 Pin Function
FADSEL in UCTLR
*
3
0 1
TPU Channel 2 Setting
*
1
Output Input or Initial Value
P17DDR 0 1
Pin function P17 input P17 output OE output
*
3
TIOCB2 output
TIOCB2 input
TCLKD input
Table 9.3 P16 Pin Function
TPU Channel 2 Setting
*
1
Output Input or Initial Value
P16DDR 0 1
Pin function P16 input P16 output
TIOCA2 output
TIOCA2 input
IRQ1 input
*
2
Notes: 1. For details on the TPU channel specification, refer to section 10, 16-Bit Timer Pulse
Unit (TPU).
2. When used as an external interrupt pin, do not use for another functions.
3. The USB may be unusable in mode 7 in some cases. See section 3, MCU Operating
Modes, for details.