NEC PD78P214 Manuale Utente

Chapter 1 General

Product name

Parameter

Internal ROM

Internal RAM

Port 4

Port 5

Port 6

Others

8KB masked ROM at

00000H to 01FFFH

384 bytes at 0FD80H

to 0FEFFH

Used as both

general-purpose I/O

port (P40 to P47) and

address/data bus

(AD0 to AD7)

Used as both

general-purpose I/O

port (P50 to P57) and

address bus (A8 to

A15)

P64 and P65 are

used as both

general-purpose I/O

ports, and the RD

and WR pins,

respectively.

PD78212

PD78214

PD78P214

PD78213

16KB masked ROM

at 00000H to 03FFFH

16KB PROM at

00000H to 03FFFH

Item

Package size

Infrared reflow soldering or

vapor-phase soldering (VPS)

Humidity control for

infrared reflow soldering or

VPS

× 14 mm, lead pitch: 0.8 mm

Supported by

PD78212,

78213

Note

78214, and

78P214

The

PD78212,

PD78213

Note

PD78214, and

PD78P214 shall be

soldered within two days of their sealed

package being opened.

64-pin QFP

74-pin QFP

× 20 mm, lead pitch: 1.0 mm

Supported by

PD78212

Note

78213

Note

78214, and

78P214

Note

The

PD78P214

Note

shall be soldered

within seven days of its sealed package

being opened.

The

PD78212

Note

PD78213

Note

, and

PD78214 can be soldered at any time

after their sealed package has been

opened.

None

Used only as

address/data bus

(AD0 to AD7)

Used only as

address bus (A8 to

A15)

P64 and P65 are

used only as the RD

and WR pins,

respectively.

512 bytes at 0FD00H to 0FEFFH

Used as both general-purpose I/O port

(P50 to P57) and address bus (A8 to A15)

Used as both general-purpose I/O port

(P40 to P47) and address/data bus (AD0 to

AD7)

P64 and P65 are used as both general-

purpose I/O ports, and the RD and WR

pins, respectively.

PROM programming

mode is supported

—

Soldering conditions

1.12 DIFFERENCES BETWEEN THE

PD78212,

PD78213,

PD78214, AND

PD78P214

1.12.1 Functional Differences

1.12.2 Package Differences

These products are available with either of two types of QFP (64-pin and 74-pin). Taking differences such as their
soldering conditions, listed below, into consideration, select an appropriate QFP.

Note The corresponding package is not available for the special quality grade versions of these products, indicated by suffix (A).