11.1.9.1.1 Voltage Monitoring

Table 11-68. VDDCORE Voltage Monitor Characteristics
Symbol	Parameter	Conditions	Min	Max	Unit
V_DDIN33	Supply voltage range (VDDIN33)⁽¹⁾	–	3.00	3.60	V
V_IT+	Positive-going input threshold voltage (VDDCORE overvoltage)	–	1.17	1.21	V
V_IT-	Negative-going input threshold voltage (VDDCORE undervoltage)	–	0.99	1.03	V
V_hys	Hysteresis voltage⁽²⁾⁽³⁾	–	30		mV
t_DET	Detection time⁽³⁾⁽⁴⁾	–	–	50	µs

Note:

This voltage monitor is powered by the 2.5V regulated output of the VDDOUT25 regulator, which is supplied from VDDIN33.
Hysteresis applies to both VIT+ and VIT- voltage thresholds. VIT+ has a negative hysteresis and VIT- has a positive hysteresis. Refer to Security Module (SECUMOD).
Simulation data
An additional debouncing time applies to this detection time as programmed in SECUMOD.VDDCORE_DBTV.

Table 11-69. VDDCPU Voltage Monitor Characteristics
Symbol	Parameter	Conditions	Min	Max	Unit
V_DDIN33	Supply voltage range (VDDIN33)⁽¹⁾	–	3.00	3.60	V
V_IT+	Positive-going input threshold voltage (VDDCPU overvoltage)	800 MHz operating frequency (SECUMOD_GPSBR.SMCPURANGE = 1)	1.25	1.30	V
V_IT+	Positive-going input threshold voltage (VDDCPU overvoltage)	600 MHz operating frequency (SECUMOD_GPSBR.SMCPURANGE = 0)	1.17	1.21	V
V_IT-	Negative-going input threshold voltage (VDDCPU undervoltage)	800 MHz operating frequency (SECUMOD_GPSBR.SMCPURANGE = 1)	1.10	1.14	V
V_IT-		600 MHz operating frequency (SECUMOD_GPSBR.SMCPURANGE = 0)	0.99	1.03	V
V_hys	Hysteresis voltage⁽²⁾⁽³⁾	–	30		mV
t_DET	Detection time⁽³⁾⁽⁴⁾	–	–	50	µs

Note:

This voltage monitor is powered by the 2.5V regulated output of the VDDOUT25 regulator, which is supplied from VDDIN33.
Hysteresis applies to both VIT+ and VIT- voltage thresholds. VIT+ has a negative hysteresis and VIT- has a positive hysteresis. Refer to Security Module (SECUMOD).
Simulation data
An additional debouncing time applies to this detection time as programmed in SECUMOD_VCPUFR.VDDCPU_DBTV.

Table 11-70. VBAT Voltage Monitor Characteristics⁽¹⁾
Symbol	Parameter	Conditions	Min	Max	Unit
V_BAT	Supply voltage range (VBAT)⁽²⁾	–	V_{IT-_POR}	3.60	V
I_BAT	Current consumption on VBAT⁽³⁾⁽⁴⁾	–	–	200	nA
V_IT+	Positive-going input threshold voltage (VBAT overvoltage)	Scheduled operation every 20 ms	3.41	3.64	V
V_IT-	Negative-going input threshold voltage (VBAT undervoltage)	Scheduled operation every 20 ms	1.49	1.64	V
t_DET	Detection time⁽⁴⁾⁽⁵⁾	–	–	10	µs

Note:

Due to temperature monitor alarm rising, do not use the supply monitor above 105°C.
V_{IT-_POR} refers to the negative-going input threshold of the VBAT power-on reset (see the table VBAT POR Characteristics). Operation of the device backup section, and in particular of this monitor, is granted down to the VBAT power-on reset V_IT- threshold.
Average current consumption. Refer to Security Module (SECUMOD).
Simulation data
Measured with 100 mV threshold overload

Table 11-71. VDDANA Voltage Monitor Characteristics
Symbol	Parameter	Conditions	Min	Max	Unit
V_DDIN33	Supply voltage range (VDDIN33)	–	3.00	3.60	V
V_IT+	Positive-going input threshold voltage (VDDANA overvoltage)⁽¹⁾	–	2.575	2.675	V
V_IT-	Negative-going input threshold voltage (VDDANA undervoltage)⁽¹⁾	–	2.325	2.425	V
t_DET	Detection time⁽¹⁾	–	–	50	µs

Note: