rkotyara

Оно ?
и там было несколько вариантов масок ...я так понимаю этот самый свежий

The following applies to the D59J MC68HC705X32 mask set only.
– A mask option register (MOR) on the MC68HC705X32 allows
the customer to select POR delay cycles and oscillator DIV
ratio. However, during reset, options of 4064 cycles POR and
DIV10 are forced, regardless of which options the customer has
selected. Therefore, a power-on reset delay of 40640 oscillator
cycles is forced.
On the D59J mask set, the oscillator divide ratio depends on the CANE pin:
CANE = 1 DIV10 forced in bootloader mode
CANE = 0 DIV2 forced in bootloader mode
On later mask set revisions, including G47V, DIV2 is forced in bootloader mode,
regardless of the CANE pin.
The following applies to the D40J and D59J MC68HC705X32 mask sets only:
– The minimum external RESET input pulse width, tRL
(Table B-10) is 1.5 tCYC
– Maximum bus speed 2.2 M

Изображения

20210311_091318.jpg (232.5 Кб, 16 просмотров)

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