Datasheet

Section 9 I/O Ports
Rev.6.00 Sep. 27, 2007 Page 355 of 1268
REJ09B0220-0600
9.2.3 Pin Functions
Port 1 pins also function as PPG output pins (PO
15
to PO
8
), TPU I/O pins (TCLKA, TCLKB,
TCLKC, TCLKD, TIOCA
0
, TIOCB
0
, TIOCC
0
, TIOCD
0
, TIOCA
1
, TIOCB
1
, TIOCA
2
, and
TIOCB
2
), and DMAC
*
output pins (DACK
0
and DACK
1
). Port 1 pin functions are shown in table
9.3.
Note: * The DMAC is not supported in the H8S/2321.
Table 9.3 Port 1 Pin Functions
Pin Selection Method and Pin Functions
P1
7
/PO
15
/
TIOCB
2
/TCLKD
The pin function is switched as shown below according to the combination of
the TPU channel 2 setting (by bits MD3 to MD0 in TMDR2, bits IOB3 to IOB0
in TIOR2, and bits CCLR1 and CCLR0 in TCR2), bits TPSC2 to TPSC0 in
TCR0 and TCR5, bit NDER15 in NDERH, and bit P17DDR.
TPU Channel
2 Setting Table Below (1) Table Below (2)
P17DDR — 0 1 1
NDER15 — — 0 1
Pin function TIOCB
2
output P1
7
input
P1
7
output
PO
15
output
TIOCB
2
input
*
1
TCLKD input
*
2
Notes: 1. TIOCB
2
input when MD3 to MD0 = B'0000 or B'01xx, and IOB3 = 1.
2. TCLKD input when the setting for either TCR0 or TCR5 is: TPSC2
to TPSC0 = B'111.
TCLKD input when channels 2 and 4 are set to phase counting
mode.
TPU Channel
2 Setting (2) (1) (2) (2) (1) (2)
MD3 to MD0 B'0000, B'01xx B'0010 B'0011
IOB3 to IOB0 B'0000
B'0100
B'1xxx
B'0001 to
B'0011
B'0101 to
B'0111
— B'xx00 Other than B'xx00
CCLR1,
CCLR0
— — — — Other
than B'10
B'10
Output
function
— Output
compare
output
— — PWM
mode 2
output
—
x: Don’t care