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ST7FOXU0 Datasheet(PDF) 107 Page - STMicroelectronics

Part # ST7FOXU0
Description  1 additional output line
PDF  123 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7FOXU0 Datasheet(HTML) 107 Page - STMicroelectronics

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ST7FOXU0
Electrical characteristics
107/123
Figure 40.
RESET pin protection when LVD is disabled
1.
The reset network protects the device against parasitic resets.
The output of the external reset circuit must have an open-drain output to drive the ST7 reset pad.
Otherwise the device can be damaged when the ST7 generates an internal reset (LVD or watchdog).
Whatever the reset source is (internal or external), the user must ensure that the level on the RESET pin
can go below the VIL max. level specified in Section 12.9.1 on page 105. Otherwise the reset will not be
taken into account internally.
Because the reset circuit is designed to allow the internal Reset to be output in the RESET pin, the user
must ensure that the current sunk on the RESET pin is less than the absolute maximum value specified for
IINJ(RESET) in Section Table 40. on page 94.
2.
Please refer to Section 11.2.1 on page 89 for more details on illegal opcode reset conditions.
0.01
µF
EXTERNAL
RESET
CIRCUIT
USER
Required
ST72XXX
PULSE
GENERATOR
Filter
RON
VDD
INTERNAL
RESET
WATCHDOG
ILLEGAL OPCODE



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