HD6432138SW datasheet(279/1061 Pages) RENESAS

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Section 8 I/O Ports

Rev. 4.00 Jun 06, 2006 page 225 of 1004

REJ09B0301-0400

8.7.3

Pin Functions

Port 6 pins also function as the 16-bit free-running timer (FRT) I/O pins (FTOA, FTOB, FTIA to

FTID, FTCI), timer X (TMRX) I/O pins (TMOX, TMIX), the timer Y (TMRY) input pin (TMIY),

timer connection I/O pins (HFBACKI, VSYNCI, VSYNCO, VFBACKI, CLAMPO), key-sense

interrupt input pins (

KIN7 to KIN0), expansion A/D converter input pins (CIN7 to CIN0), and

external interrupt input pins (

IRQ7, IRQ6). In the H8S/2138 Group, the port 6 input level can be

switched in four stages. The port 6 pin functions are shown in table 8.14.

Table 8.14

Port 6 Pin Functions

Selection Method and Pin Functions

P67/TMOX/

IRQ7/

KIN7/CIN7

The pin function is switched as shown below according to the combination of

bits OS3 to OS0 in TCSR of TMRX and bit P67DDR.

OS3 to OS0

All 0

Not all 0

P67DDR

—

Pin function

P67 input pin

P67 output pin

TMOX output pin

IRQ7 input pin, KIN7 input pin, CIN7 input pin

This pin is used as the

IRQ7 input pin when bit IRQ7E is set to 1 in IER.

It can always be used as the

KIN7 or CIN7 input pin.

P66/FTOB/

IRQ6/

KIN6/CIN6

The pin function is switched as shown below according to the combination of

bit OEB in TOCR of the FRT and bit P66DDR.

OEB

P66DDR

—

Pin function

P66 input pin

P66 output pin

FTOB output pin

IRQ6 input pin, KIN6 input pin, CIN6 input pin

This pin is used as the

IRQ6 input pin when bit IRQ6E is set to 1 in IER.

It can always be used as the

KIN6 or CIN6 input pin.

P65DDR

Pin function

P65 input pin

P65 output pin

FTID input pin,

KIN5 input pin, CIN5 input pin

P65/FTID/

KIN5/

CIN5

This pin can always be used as the FTID,

KIN5, or CIN5 input pin.

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