74.8.1.1 Voltage Monitoring

Table 74-68. VDDCORE Voltage Monitor Characteristics
Symbol Parameter Conditions Min Max Unit
VDDIN33 Supply voltage range (VDDIN33)(1) – 3.00 3.60 V
VIT+ Positive-going input threshold voltage (VDDCORE overvoltage) – 1.17 1.21 V
VIT- Negative-going input threshold voltage (VDDCORE undervoltage) – 0.99 1.03 V
Vhys Hysteresis voltage(2)(3) – 30 mV
tDET Detection time(3)(4) – – 50 µs
Note:
  1. This voltage monitor is powered by the 2.5V regulated output of the VDDOUT25 regulator, which is supplied from VDDIN33.
  2. 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).
  3. Simulation data
  4. An additional debouncing time applies to this detection time as programmed in SECUMOD.VDDCORE_DBTV.
Table 74-69. VDDCPU Voltage Monitor Characteristics
Symbol Parameter Conditions Min Max Unit
VDDIN33 Supply voltage range (VDDIN33)(1) – 3.00 3.60 V
VIT+ Positive-going input threshold voltage (VDDCPU overvoltage) 800 MHz operating frequency (SECUMOD_GPSBR.SMCPURANGE = 1) 1.25 1.30 V
600 MHz operating frequency (SECUMOD_GPSBR.SMCPURANGE = 0) 1.17 1.21 V
VIT- Negative-going input threshold voltage (VDDCPU undervoltage) 800 MHz operating frequency (SECUMOD_GPSBR.SMCPURANGE = 1) 1.10 1.14 V
600 MHz operating frequency (SECUMOD_GPSBR.SMCPURANGE = 0) 0.99 1.03 V
Vhys Hysteresis voltage(2)(3) – 30 mV
tDET Detection time(3)(4) – – 50 µs
Note:
  1. This voltage monitor is powered by the 2.5V regulated output of the VDDOUT25 regulator, which is supplied from VDDIN33.
  2. 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).
  3. Simulation data
  4. An additional debouncing time applies to this detection time as programmed in SECUMOD_VCPUFR.VDDCPU_DBTV.
Table 74-70. VBAT Voltage Monitor Characteristics(1)
Symbol Parameter Conditions Min Max Unit
VBAT Supply voltage range (VBAT)(2) – VIT-_POR 3.60 V
IBAT Current consumption on VBAT(3)(4) – – 200 nA
VIT+ Positive-going input threshold voltage (VBAT overvoltage)

Scheduled operation every 20 ms

 3.41 3.64 V
VIT- Negative-going input threshold voltage (VBAT undervoltage) Scheduled operation every 20 ms 1.49 1.64 V
tDET Detection time(4)(5) – – 10 µs
Note:
  1. Due to temperature monitor alarm rising, do not use the supply monitor above 105°C.
  2. VIT-_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 VIT- threshold.
  3. Average current consumption. Refer to Security Module (SECUMOD).
  4. Simulation data
  5. Measured with 100 mV threshold overload
Table 74-71. VDDANA Voltage Monitor Characteristics
Symbol Parameter Conditions Min Max Unit
VDDIN33 Supply voltage range (VDDIN33) – 3.00 3.60 V
IDDIN33 Current consumption (VDDIN33)(1) Normal mode – 120 µA
Low-power mode – 80 µA
VIT+ Positive-going input threshold voltage (VDDANA overvoltage)(1) – 2.575 2.675 V
VIT- Negative-going input threshold voltage (VDDANA undervoltage)(1) – 2.325 2.425 V
tDET Detection time(1) – – 50 µs
Note:
  1. Simulation data