Figure 6.2-1 System Reset Sources - Nuvoton ISD94124BYI Technical Reference Manual

There are a total of 9 reset sources in the ISD94100 series. In general, CPU reset is used to reset
®
Cortex -M4 only; the other reset sources will reset Cortex
are small differences between each reset source and they are listed in Table 6.2.2-1.
Reset Sources
POR
Register
SYS_RSTSTS Bit 0 = 1
CHIPRST
0x0
(SYS_IPRST0[0])
BODEN Reload
from
(SYS_BODCTL[0])
CONFIG0
BODVL
(SYS_BODCTL[18:16])
BODRSTEN
(SYS_BODCTL[3])
HXTEN Reload
from
(CLK_PWRCTL[0])
CONFIG0
LXTEN 0x0
(CLK_PWRCTL[1])
WDTCKEN 0x1
(CLK_APBCLK0[0])
HCLKSEL
Reload
from
(CLK_CLKSEL0[2:0])
CONFIG0
WDTSEL 0x3
(CLK_CLKSEL1[1:0])
HXTSTB 0x0
(CLK_STATUS[0])
LXTSTB 0x0
(CLK_STATUS[1])
PLLSTB
0x0
(CLK_STATUS[2])
HIRCSTB 0x1
(CLK_STATUS[4])
CLKSFAIL 0x0
(CLK_STATUS[7])
RSTEN Reload
from
(WDT_CTL[1])
CONFIG0
WDTEN
(WDT_CTL[7])
Sep 9, 2019
ISD94100 Series Technical Reference Manual

Figure 6.2-1 System Reset Sources

NRESET WDT LVR
Bit 1 = 1 Bit 2 = 1 Bit 3 = 1
- - -
Reload Reload Reload
from from from
CONFIG0 CONFIG0 CONFIG0
Reload Reload Reload
from from from
CONFIG0 CONFIG0 CONFIG0
- - -
- 0x1 -
Reload Reload Reload
from from from
CONFIG0 CONFIG0 CONFIG0
0x3 - -
- - -
- - -
- - -
- - -
0x0 - -
Reload Reload Reload
from from from
CONFIG0 CONFIG0 CONFIG0
Page 50 of 928
®
-M4 and all peripherals. However, there
BOD Lockup CHIP
Bit 4 = 1 Bit 8 = 1 Bit 0 = 1
- - -
- Reload Reload
from
from
CONFIG0 CONFIG0
Reload Reload Reload
from from from
CONFIG0 CONFIG0 CONFIG0
- - -
- - 0x1
Reload Reload Reload
from from from
CONFIG0 CONFIG0 CONFIG0
- - -
- - -
- - -
- - -
- - -
- - -
Reload - Reload
from from
CONFIG0 CONFIG0
MCU CPU
Bit 5 = 1 Bit 7 =
1
- -
Reload -
from
CONFIG0
Reload
from
CONFIG0
- -
- -
Reload -
from
CONFIG0
- -
- -
- -
- -
- -
- -
- -
Rev1.09