SH7041A datasheet(717/923 Pages) RENESAS

Part #	SH7041A

Description	Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

PDF	923 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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717 / 923 page

679

Address

Data

PGM

Write

Verify

Read data

VPS

Write data

VCS

CES

OPW)

OES

CC + 1

Note: * t

OPW is defined by the values noted in the flowchart (figure 19.6).

Figure 21.7 Write/Verify Timing

21.3.3

Cautions on Writing

1. Writes must always be done with the established voltage and timing. The write voltage

(programming voltage) V

PP is 12.5 V (when the EPROM writer is set for the HN27C101

Hitachi specifications, V

PP becomes 12.5 V). Devices will sometimes be destroyed if a voltage

higher than the rated one is applied. Pay particular attention to such phenomena as EPROM

writer overshoot.

2. Always confirm that the indices of the EPROM writer socket, socket adapter, and device are in

agreement before programming. Devices will sometimes be destroyed due to excessive current

flow if these are not connected in the proper locations.

3. Do not touch the socket adapter or device during writing. Contact faults can sometimes cause

devices to be improperly written.

4. Page programming mode writes are not possible. Always set to byte programming mode.

SH7041A Datasheet(PDF) 717 Page - Renesas Technology Corp