HD6417034 Datasheet, PDF(491/691 Page) Renesas Technology Corp – SuperH RISC ENGINE SH7032 AND SH7034

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HD6417034 Datasheet, PDF (491/691 Pages) Renesas Technology Corp – SuperH RISC ENGINE SH7032 AND SH7034

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Address

Data

VPP

VPP

VCC

VCC VCC + 1

VCC

CE

PGM

OE

Write

tAS

Write data

tDS

tDH

tVPS

tVCS

tCES

tPW

(tOPW)*

tOES

Verify

tAH

Read data

tDF

tOE

Note: * tOPW is defined by the value given in the flowchart.

Figure 17.5 Write/Verify Timing

17.3.3 Notes on Writing

1. Always write using the prescribed voltage and timing. The write voltage (programming

voltage) VPP is 12.5 V (when the EPROM programmer is set to the Hitachi specifications for

HN27C101, VPP is 12.5 V.) Applying a voltage in excess of the rated voltage may damage the

device. Pay particular attention to overshoot in the EPROM programmer.

2. Before programming, always check that the index marks on the EPROM programmer socket,

socket adapter, and device are aligned with each other. If they are not correctly aligned, an

overcurrent may be generated, damaging the device.

3. Do not touch the socket adapter or device during writing. Contact can cause malfunctions that

will prevent data from being written accurately.

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