HD64F3337YCP16V Datasheet, PDF(150/749 Page) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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HD64F3337YCP16V Datasheet, PDF (150/749 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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7.3 Port 2

7.3.1 Overview

Port 2 is an 8-bit input/output port with the pin configuration shown in figure 7.5. The pin

functions differ depending on the operating mode.

Port 2 has built-in, software-controllable MOS input pull-up transistors that can be used in modes

2 and 3.

Pins in port 2 can drive one TTL load and a 90-pF capacitive load. They can also drive LEDs and

darlington transistors.

Port 2

118

Port 2 pins

P27/A15

P26/A14

P25/A13

P24/A12

P23/A11

P22/A10

P21/A9

P20/A8

Pin configuration

in mode 1

(expanded mode

with on-chip ROM

disabled)

A15 (output)

A14 (output)

A13 (output)

A12 (output)

A11 (output)

A10 (output)

A9 (output)

A8 (output)

Pin configuration

in mode 2

(expanded mode

with on-chip ROM

enabled)

A15 (output)/P27 (input)

A14 (output)/P26 (input)

A13 (output)/P25 (input)

A12 (output)/P24 (input)

A11 (output)/P23 (input)

A10 (output)/P22 (input)

A9 (output)/P21 (input)

A8 (output)/P20 (input)

Pin configuration in mode 3

(single-chip mode)

P27 (input/output)

P26 (input/output)

P25 (input/output)

P24 (input/output)

P23 (input/output)

P22 (input/output)

P21 (input/output)

P20 (input/output)

Figure 7.5 Port 2 Pin Configuration

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