UPD78P058F datasheet(13/78 Pages) RENESAS

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µPD78P058F

DIFFERENCES BETWEEN

µPD78P058F AND MASK ROM VERSIONS

The

µPD78P058F is a single-chip microcontroller with an on-chip one-time PROM.

Setting the memory size switching register (IMS) and internal expansion RAM size switching register (IXS) enables

identical functions to mask ROM versions (

µPD78056F and 78058F) except the functions of PROM specifications and

of mask options for P60 to P63.

Differences between the

µPD78P058F and mask ROM versions are shown in Table 1-1.

Table 1-1. Differences between

µPD78P058F and Mask ROM Versions

Item

µPD78P058F

Mask ROM Versions

Internal ROM structure

One-time PROM

Mask ROM

Internal ROM capacity

60 Kbytes

µPD78056F : 48 Kbytes

µPD78058F : 60 Kbytes

Internal expansion RAM capacity

1024 bytes

µPD78056F : None

µPD78058F : 1024 bytes

Change of internal ROM capacity by

Can be changedNote

Cannot be changed

memory size switching register (IMS)

Change of internal expansion RAM

Can be changedNote

Cannot be changed

capacity by internal expansion

RAM size switching register (IXS)

IC pin

None

Provided

VPP pin

Provided

None

Pull-up resistor on-chip mask option

None

Provided

of P60 to P63 pins

Electrical specifications,

See each Data Sheet.

recommended soldering conditions

Note The RESET input sets the internal PROM capacity and internal expansion RAM capacity to 60 Kbytes and 1024

bytes, respectively.

Caution

The PROM version and mask ROM version differ in noise tolerance and noise emission. When

replacing a PROM version with a mask ROM version when switching from experimental production

to mass production, make a thorough evaluation with a CS version (not ES version) of the mask

ROM version.

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