HD64F3437TF16 Datasheet, PDF(402/752 Page) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

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HD64F3437TF16 Datasheet, PDF (402/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

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18.3.2 Notes on Programming

(1) A PROM programmer that does not allow start address setting cannot be used. If such a

PROM programmer is used, it will not be possible to perform verification at addresses H'10002,

H'10003, H'10004, and so on. Therefore a PROM programmer that allows address setting must be

used.

(2) Program with the specified voltages and timing. The programming voltage (VPP) is

12.5 V.

Caution: Applied voltages in excess of the specified values can permanently destroy the chip. Be

particularly careful about the PROM programmerâs overshoot characteristics.

If the PROM programmer is set to HN27C101 specifications, VPP will be 12.5 V.

(3) Before writing data, check that the socket adapter and chip are correctly mounted in the

PROM writer. Overcurrent damage to the chip can result if the index marks on the PROM

programmer, socket adapter, and chip are not correctly aligned.

(4) Donât touch the socket adapter or chip while writing. Touching either of these can cause

contact faults and write errors.

(5) Page programming is not supported. Do not select page programming mode.

(6) The H8/3437 PROM size is 60 kbytes. The H8/3434 PROM size is 32 kbytes. Set the

address range to H'0000 to H'F77F for the H8/3437, and to H'0000 to H'7FFF for the H8/3434.

When programming, specify H'FF data for unused address areas (H'F780 to H'1FFFF in the

H8/3437, H'8000 to H'1FFFF in the H8/3434).

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