4.7 Power Supply DC Module Electrical Specifications

Table 4-7. Power Supply DC Electrical Specifications
AC Characteristics			Standard Operating Conditions: V_DD = 1.9V to 3.6V (unless otherwise stated) Operating Temperature: -40°C ≤ T_A ≤ +85°C for Industrial Temp
Param. No.	Symbol	Characteristics	Min.	Typ.	Max.	Units	Conditions
REG_20	V_DD	Voltage range of V_DD (main power supply)	1.9	3.3	3.6	V	Operating range of 1.9-3.6V
REG_39	VDD_A	Analog V_DD supply input voltage range	V_DD-0.3	—	V_DD+0.3	V	Operating range
REG_21	GND	Analog V_SS supply	V_SS-0.3	—	V_SS+0.3	V	GND
Note: These parameters are characterized but not tested in manufacturing. V_DD and VDD_A must be at the same voltage level. For more details on power supply pins filtering, refer to the Design Package available on the product page.

Table 4-8. POR Electrical Characteristics
AC Characteristics			Standard Operating Conditions: V_DD = 1.9V to 3.6V (unless otherwise stated) Operating Temperature: -40°C ≤ T_A ≤ +85°C for Industrial Temp
Param. No.	Symbol	Characteristics	Min.	Typ.	Max.	Units	Conditions
DC16	VPOR	V_DD Start voltage to ensure internal Power-on Reset signal	1.52	—	1.58	V	V_DD voltage must remain at V_SS for a minimum of 200 μs to ensure POR. V_DDIO Power-up/Power-down (See V_DDIO Ramp Rate)
DC17	SVDD_R	V_DDIO Rise ramp rate to ensure internal Power-on Reset signal	0.03	—	0.115	V/ms	Failure to meet this specification may lead to start-up or unexpected behaviors
DC18	SVDD_F	VDDIO Falling ramp rate to ensure internal Power-on Reset signal	—	1.39	—	V/ms	Failure to meet this specification may cause the device to not detect Reset
Note: These parameters are characterized but not tested in manufacturing.

Table 4-9. BOR Electrical Characteristics
AC Characteristics			Standard Operating Conditions: V_DD = 1.9V to 3.6V (unless otherwise stated) Operating Temperature: -40°C ≤ T_A ≤ +85°C for Industrial Temp
Param. No.	Symbol	Characteristics	Min.	Typ.	Max.	Units	Conditions
B011	V_BHYS	Brown-out hysteresis	51	53.4	54	mV	—
B012	VZPBOR	Zero-power BOR	—	1.9	—	V	—
Note: These parameters are characterized but not tested in manufacturing.

Table 4-10. Reset Timing Characteristics
AC Characteristics			Standard Operating Conditions: V_DD = 1.9V to 3.6V (unless otherwise stated) Operating Temperature: -40°C ≤ T_A ≤ +85°C for Industrial Temp
Param. No.	Symbol	Characteristics	Min.	Typ.	Max.	Units	Conditions
SY00	T_PU	Power-up period	—	400	600	μs	—
SY02	T_SYSDLY	System delay period before first instruction is fetched	—	1 μs + 8 SYSCLK cycles	—	—	—
SY20	T_MCLR	MCLR pulse width (low)	2	—	—	μs	Minimum reset active time to guarantee MCU reset
SY30	T_BOR	BOR pulse width (low)	—	1	—	μs	CRU combines BOR12 and BOR33
Note: These parameters are characterized but not tested in manufacturing.