HD64F3048F16 Datasheet, PDF(601/903 Page) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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HD64F3048F16 Datasheet, PDF (601/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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Section 18 ROM (H8/3048F-ONE: Single Power Supply, H8/3048B Mask ROM Version)

Section 18 ROM

(H8/3048F-ONE: Single Power Supply,

H8/3048B Mask ROM Version)

18.1 Flash Memory Overview

18.1.1 Notes on H8/3048F-ONE (Single Power Supply)

There are two models of the H8/3048F-ZTAT with on-chip flash memory: a dual power supply

model (H8/3048F) and single power supply model (H8/3048F-ONE). Points to be noted when

using the H8/3048F-ONE single power supply is given below.

For the differences between the dual power supply model and single power supply model

(H8/3048F-ONE), see section 1.4.3, Differences between H8/3048F and H8/3048F-ONE.

(1) Voltage Application

12 V must not be applied to the H8/3048F-ONE (single power supply), as this will

permanently damage the device.

The flash memory programming power supply for the H8/3048F-ONE (single power supply) is

VCC.

The programming power supply for the dual power supply model is the VPP pin (12 V), but there is

no VPP pin in the single power supply model. In the H8/3048F-ONE (single power supply) model

the FWE pin is provided at the same pin position as the VPP pin in the dual power source model,

but FWE is not a power supply pinâit is used to control flash memory write enabling.

Also, in boot mode, 12 V must be applied to the MD2 pin in the dual power supply model, but this

is not necessary in the H8/3048F-ONE (single power supply).

The maximum rating of the FWE and MD2 pins in the H8/3048F-ONE (single power supply)

is VCC +0.3 V. Applying a voltage in excess of the maximum rating will permanently damage

the device.

Do not select the HN28F101 programmer setting for the H8/3048F-ONE (single power

supply). If this setting is made by mistake, 12.0 V will be applied to the FWE pin,

permanently damaging the device.

When using a PROM programmer to program the on-chip flash memory in the H8/3048F-

ONE (single power supply), use a PROM programmer that supports Renesas Technology

microcomputer device types with 128-kbyte on-chip flash memory.

Rev. 3.00 Sep 27, 2006 page 573 of 872

REJ09B0325-0300

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