HD64F3048VTF8 Datasheet, PDF(650/903 Page) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

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HD64F3048VTF8 Datasheet, PDF (650/903 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

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

Programming

and erase

Wait time: x possible Wait time: y

Ï

VCC

tOSC1

Min 0 Âµs

FWE

tMDS

Min 0 Âµs

MD2 to MD0*1,

RXD1*3

RES

SWE bit

tMDS

SWE set

SWE clear

Flash memory access disabled period

(x: Wait time after SWE setting, y: wait time after SWE clearing)*2

Flash memory reprogrammable period

(Flash memory program execution and data read, other than verify, are disabled.)

Notes: 1. Always fix the level by pulling down or pulling up the mode pins (MD2 to MD0)

until powering off, except for mode switching.

2. See section 21.1.6, Flash Memory Characteristics.

3. For pins RXD1 and TXD1, use on-board pull-up.

Figure 18.18 Powering On/Off Timing (Boot Mode)

Rev. 3.00 Sep 27, 2006 page 622 of 872

REJ09B0325-0300

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