ADV
ANCEINFORMA
TION
/512
OSCCLK
Watchdog
Prescaler
WDCR(WDPS(2:0))
WDCLK
WDCR(WDDIS)
SCSR(WDENINT)
1 WDCLK
delay
Overflow
SYSRSn
Clear
8-bit
Watchdog
Counter
WDCNTR(7:0)
WDKEY(7:0)
Watchdog
Key Detector
55 + AA
WDWCR(MIN(7:0))
Watchdog
Window
Detector
Good Key
Bad Key
Out of Window
Generate
512-OSCCLK
Output Pulse
Watchdog Timeout
WDRSTn
WDINTn
Count
In Window
TMS320F28377S, TMS320F28376S, TMS320F28375S, TMS320F28374S
SPRS881A – AUGUST 2014 – REVISED JUNE 2015
6.6.9
Watchdog
The watchdog module is the same as the one on previous TMS320C2000™ devices, but with an optional
lower limit on the time between software resets of the counter. This windowed countdown is disabled by
default, so the watchdog is fully backwards-compatible.
The watchdog is capable of generating either a reset or an interrupt. It is clocked from the internal
oscillator with a selectable frequency divider.
shows the various functional blocks within the watchdog module.
Figure 6-4. Windowed Watchdog
184
Detailed Description
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