Unlock HITACHI HD64F3337SF16V Flash MCU will disable the secured protective system and readout MCU firmware directly from its flash memory, through power glitch method plus the faulty injection method the tamper resistance mechanisam will be disabled and reset the status of microcontroller from locked to unlocked one;
There are two versions of the H8/3337F with on-chip flash memory: a dual-power-supply version and a single-power-supply (S-mask) version. Points to be noted when using the H8/3337F single- power-supply S-mask model are given below:
12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device by Crack R5F10Y47ASP#30 MCU Flash Memory.
The flash memory programming power supply for the S-mask model (single-power-supply specification) is VCC. The programming power supply for the dual-power-supply model is the FVPP pin (12 V), but the single-power-supply model (S-mask model) does not have an FVPP pin.
Also, in boot mode, 12 V has to be applied to the MD1 pin in the dual-power-supply model, but 12 V application is not necessary in the single-power-supply model (S-mask model).
The maximum rating of the MD1 pin is VCC +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 S-mask model (single-power-supply specification). If this setting is made by mistake, 12 V will be applied to the STBY pin, possibly causing permanent damage to the device.
When using a PROM programmer to program the on-chip flash memory in the S-mask model (single-power-supply specification), use a PROM programmer that supports Hitachi microcomputer devices with 64-kbyte on-chip flash memory which can be applied for Unlocking R5F1007EANA#U0 Microcontroller Flash Memory. Also, only use the specified socket adapter. Using the wrong PROM programmer or socket adapter may damage the device.
The following PROM programmers support the S-mask model (single-power-supply specification).