UPD75P048 datasheet(13/40 Pages) NEC

13 / 40 page

µPD75P048

DIFFERENCES BETWEEN THE

µPD75P048 AND THE µPD75048

The

µPD75P048 is a One-Time PROM version of the µPD75048. The µPD75P048 has the same CPU and

internal hardwares. Table 2-1 shows the differences between the

µPD75P048 and the µPD75048. Bear in mind

the differences between these two products when debugging or developing on an experimental basis your

application system by using the one-time PROM model, and then mass-producing the application system by

using the mask ROM model.

Details for the CPU functions and internal hardwares are available in

µPD75048 User’s Manual (IEU-1278).

Table 2-1 Differences between the

µPD75P048 and the µPD75048

Items

Program Memory

Pull-up Resistors

Pull-Down Resistors

XT1 Feedback Resistor

Pin Connection

Electrical Specification

Other

µPD75P048

µPD75048

One-time PROM

Mask ROM

• 0000H to 1F7FH

• 8064

× 8 bits

Software-selectable

N/A

Mask-option

Software-selectable

On-chip

Mask-option

P33/MD3 - P30/MD0

P33 - P30

VPP

Current dissipation differs. For details,

refer to Data Sheet of each model.

Circuit scale and mask layout differ.

Consequently, noise immunity and noise

radiation differ.

Ports 0 to 3 and 6 to 8

Ports 4, 5 and 10

Port 9

60 - 63 (SDIP)

5 - 8 (QFP)

16 (SDIP)

25 (QFP)

Note The noise immunity and noise radiation of the PROM and mask ROM models differ. To replace the PROM

mode, which has been used for experimental production of your application system with the mask ROM

model for mass production of the application system, be sure to perform thorough evaluation by using

the CS model (not ES model) of the mask ROM model.

UPD75P048 Datasheet(PDF) 13 Page - NEC

UPD75P048 Datasheet(HTML) 13 Page - NEC

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Datasheet Download

Link URL