R8A66153FP

REJ03F0260-0100 Rev.1.00

Jan.10.2008

.

Page 4 of 9

Port E and Port F

Port E and Port F are 8-bit high voltage output ports with Vo=24V/IOL=24mA. Output transistor is N-ch

open drain transistor.

When this port is selected, data bus data is written into the port latch by the positive edge of WR.

And if is set to output enable, port latch

Port G

Port G is a input port with CMOS schmitt trigger. When this port is selected and RD="L", input data is

appears to the data bus.

Table 1. Function Table

note: "0" means "L" level and "1" means "H" level.

FUNCTION

Data bus

Port A

Data bus

Port B

Data bus

Port C

Data bus

Port G

Data bus

Port E latch data

Data bus

Port F latch data

Port A

Data bus

Port B

Data bus

Port C

Data bus

Port E

Data bus

Port F

Data bus

Control register

Data bus

Data bus is in high impedance state

1

01

01

1

1

1

00

00

10

×1

1

00

00

01

0

××

1

1

0

1

0

0

1

RD

WR

00

A2

A1

A0

CS

0001

0

010

0

100

001

01

0

010

1

0001

001

××

1

1101

1