6 ST10F27x basic schematics

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6

ST10F27x basic schematics

The schematic shown in Figure 8 illustrates the minimum hardware requirements to get the

ST10F276 running. In this example:

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The ST10F276 runs at 40MHz generated using an 8-MHz external crystal and a prescaler

equal to 5 ( P0H.7 = 1, P0H.6 = P0H.5 = 0 during reset). Please refer to the Section 2:

Clock management on page 4.

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The schematic shows the ST10 in stand-alone mode, without any external memory.

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The standard bootstrap mode is activated by plugging the jumper J1 (P0L.4 = 0). As there

is no external memory, the device will always boot from internal memory and EA can be

forced to high level through the stand by mode RAM battery.

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RS232 comminication with a host is established using the STMicroelectronics ST3232

transciever. Please refer to its related datasheet for detailed specification.