HD64F3048VTF8 Datasheet, PDF (48/903 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

Section 1 Overview
1.4 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 single power supply H8/3048F-ONE are given below.
1.4.1 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 source for the H8/3048F-ONE (single power supply) is
V_CC.
The programming power source for the dual power supply model was the V_PP pin (12 V), but there
is no V_PP pin in the single power supply models. In the H8/3048F-ONE the FWE pin is provided at
the same pin position as the V_PP pin in the dual power supply model, but FWE is not a power
source pin-it 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
V_CC +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 may be applied to the FWE pin, causing permanent
damage to the device.
When using a PROM programmer to program the on-chip flash memory in the H8/3048F-ONE
model (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 20 of 872
REJ09B0325-0300