HD6432138SW datasheet(260/1061 Pages) RENESAS

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Section 8 I/O Ports

Rev. 4.00 Jun 06, 2006 page 206 of 1004

REJ09B0301-0400

A15 (Output)/P27 (Output)

A14 (Output)/P26 (Output)

A13 (Output)/P25 (Output)

A12 (Output)/P24 (Output)

A11 (Output)

A10 (Output)

A9 (Output)

A8 (Output)

Port 2

When P2DDR = 1

and PWOERB = 0

P27 (Input)/CBLANK (Output)

P26 (Input)

P25 (Input)

P24 (Input)

P23 (Input)

P22 (Input)

P21 (Input)

P20 (Input)

When P2DDR = 0

PW15 (Output)/CBLANK (Output)

PW14 (Output)

PW13 (Output)

PW12 (Output)

PW11 (Output)

PW10 (Output)

PW9 (Output)

PW8 (Output)

When P2DDR = 1

and PWOERB = 1

Figure 8.7 Port 2 Pin Functions (Modes 2 and 3 (EXPE = 1))

Modes 2 and 3 (EXPE = 0): In modes 2 and 3 (when EXPE = 0), port 2 pins function as PWM

outputs (P27 can also function as the timer connection output (CBLANK)) or I/O ports, and input

or output can be specified on a bit-by-bit basis. When a bit in P2DDR is set to 1, the

corresponding pin functions as a PWM output or output port, and when cleared to 0, as an input

port. P27 can be used as an on-chip supporting module output pin regardless of the P27DDR

setting.

The port 2 pin functions are shown in figure 8.8.

P27 (I/O)/CBLANK (Output)

P26 (I/O)

P25 (I/O)

P24 (I/O)

P23 (I/O)

P22 (I/O)

P21 (I/O)

P20 (I/O)

Port 2

P2n: Input pin when P2DDR = 0,

output pin when P2DDR = 1

and PWOERB = 0

PW15 (Output)/CBLANK (Output)

PW14 (Output)

PW13 (Output)

PW12 (Output)

PW11 (Output)

PW10 (Output)

PW9 (Output)

PW8 (Output)

When P2DDR = 1

and PWOERB = 1

Figure 8.8 Port 2 Pin Functions (Modes 2 and 3 (EXPE = 0))

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