This anomaly applies to Revision 1, build codes CLAA-D00, QKAA-D00.
Application, Network
Device behaves erratically. This occurs more likely at lower than room temperatures.
VREGMAIN or VREGRADIO is in DC/DC mode.
CPU lockup reset is triggered, watchdog reset is triggered if watchdog is enabled, or device is unresponsive.
*((volatile uint32_t *)0x5000470C) = 0x7Eul;
*((volatile uint32_t *)0x5000493C) = 0x7Eul;
*((volatile uint32_t *)0x50002118) = 0x7Ful;
*((volatile uint32_t *)0x50039E04) = 0x0ul;
*((volatile uint32_t *)0x50039E08) = 0x0ul;
*((volatile uint32_t *)0x50101110) = 0x0ul;
*((volatile uint32_t *)0x50002124) = 0x0ul;
*((volatile uint32_t *)0x5000212C) = 0x0ul;
*((volatile uint32_t *)0x502012A0) = 0x0ul;
On the network core, perform the following operations at boot:
*((volatile uint32_t *)0x41002118) = 0x7Ful;
*((volatile uint32_t *)0x41080E04) = 0x0ul;
*((volatile uint32_t *)0x41080E08) = 0x0ul;
*((volatile uint32_t *)0x41002124) = 0x0ul;
*((volatile uint32_t *)0x4100212C) = 0x0ul;
*((volatile uint32_t *)0x41101110) = 0x0ul;
nRF5340 Product Specification electrical parameters INETCPU1, INETCPU2, INETCPU4, INETCPU5, IAPPCPU3, IAPPCPU5, IAPPCPU9, and IAPPCPU11 are increased by 5-10%.In addition to the register write, there is a runtime requirement. Ensure that CPU is not switched between active and sleep (WFI/WFE) more than five times within a 200 µs period.