spear-09-h022 STMicroelectronics, spear-09-h022 Datasheet - Page 61
spear-09-h022
Manufacturer Part Number
spear-09-h022
Description
Spear Head Arm 926, 200k Customizable Easic Gates, Large Ip Portfolio Soc
Manufacturer
STMicroelectronics
Datasheet
1.SPEAR-09-H022.pdf
(71 pages)
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SPEAR-09-H022
22
Watchdog timer
The WdT is based on a programmable 8 bit counter and generates a hot reset (single pulse)
when it overflows. This reset will restart the ARM but the code will not be downloaded again.
The timer should be cleared by the software before it overflows.
The counter is clocked by a slow signal coming from a 17 bit prescaler clocked by the APB
clock. So that, as APB Bus has a frequency of 133 MHz, the elapsing time is 0.25 second.
The WdT is an APB Slave device.
Watchdog timer
61/71
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