UPD75P048GC-AB8 查看數據表（PDF） - NEC => Renesas Technology

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UPD75P048GC-AB8

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75P048

2. 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

µPD75P048

µPD75048

Program Memory

One-time PROM

Mask ROM

• 0000H to 1F7FH

• 8064 × 8 bits

Pull-up Resistors

Ports 0 to 3 and 6 to 8

Software-selectable

Ports 4, 5 and 10

N/A

Mask-option

Pull-Down Resistors Port 9

Software-selectable

XT1 Feedback Resistor

On-chip

Mask-option

Pin Connection

60 - 63 (SDIP)

P33/MD3 - P30/MD0

P33 - P30

5 - 8 (QFP)

5

16 (SDIP)

VPP

IC

25 (QFP)

Electrical Specification

Current dissipation differs. For details,

5

refer to Data Sheet of each model.

Other

Circuit scale and mask layout differ.

5

Consequently, noise immunity and noise

radiation differ.

Note The noise immunity and noise radiation of the PROM and mask ROM models differ. To replace the PROM 5

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.

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