7733 datasheet(808/940 Pages) RENESAS

808 / 940 page

OVERVIEW

7736 Group User’s Manual

1–4

BSEL

External bus

modes

––

A, B

Processor modes

Single-chip mode

Memory expansion or

Microprocessor mode

Single-chip mode

Memory expansion or

Microprocessor mode

I/O

Output

Input

Functions

Same as the 7733 Group.

This pin outputs internal enable signal E.

________

This pin outputs read enable signal RDE.

________

RDE’s level is “L” in the data read period of

the read cycle.

The level of a signal which is input to this

pin may be “H” or “L.”

The signal which is input to this pin

determines the external bus mode. When

this signal’s level is “H,” external bus mode

A is selected; when this signal’s level is “L,”

external bus mode B is selected.

Name

Enable

output

Bus select

input

1.3 Pin description

Concerning section “1.3 Pin description,” the 7736 Group differs from the 7733 Group in the following:

___

• “Description of pins E and BSEL in Table 1.3.1”

• “Description of pins P00–P07, P20–P27 and P30–P33 in Tables 1.3.2 and 1.3.3”

• “Description of pins P50–P57, P70–P77, P90–P97, P100–P107, EVL0 and EVL1 in Table 1.3.4”

• “1.3.1 Examples of handling unused pins”

The other description is the same as that of the 7733 Group. Therefore, refer to part 1:

• “1.3 Pin description” (page 1-5 in part 1)

Table 1.3.1 Pin description (1)

1.3 Pin description

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