ZAMC4100 Datasheet, PDF (40/155 Pages) Integrated Device Technology – Actuator and Motor Controller

ZAMC4100 Datasheet
3.3.2. WDT during SLEEP and STANDBY Mode
By default the WDT is disabled when the SLEEP or STANDBY Mode is activated. Since it uses a dedicated clock,
if needed, the WDT can continue running when the system is in SLEEP or STANDBY Mode. This feature is
enabled by setting bit WDTPMEN = 1 in register SMDCTRL (see Table 3.5).
If the WDT is running during the SLEEP Mode, then the system reset time-out (if enabled by SWDPOS
configuration in the WDTCONF register) generates a wake-up from sleep instead of a system reset. Refer to
section 3.5.4 for more information regarding wake-up sources.
If the WDT is running during STANDBY Mode, the “MCU reset time-out” generates a wake-up from standby
instead of an MCU reset. Refer to section 3.5.4 for more information regarding wake-up sources.
Note: If the WDT configuration register is locked, the time-out intervals cannot be modified before SLEEP or
STANDBY Mode entry.
3.3.3. WDT Configuration Register
The WDT configuration register bits mapping and description are given in Table 3.3 and Table 3.4 respectively.
After POR, the WDT is enabled with a 160ms MCU time-out reset and no system reset generation.
Table 3.3 WDTCONF Register Bits Mapping
Name
WDTCONF
Bit No
7
6
5
4
3
2
1
0
Bit name
Reset
0
0
0
1
0
0
0
1
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Address
0x04
R/W = Read/Write
© 2016 Integrated Device Technology, Inc.
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January 26, 2016