38.3.1 Supply Voltage

Table 38-1. 
Standard Operating Conditions (unless otherwise stated)
Param. No. Sym. Characteristic Min. Typ.† Max. Units Conditions
Supply Voltage
D002 VDD

1.8

5.5

V

RAM Data Retention(1)
D003 VDR 1.7

V

Device in SLEEP mode
Power-on Reset Release Voltage(2)
D004 VPOR

1.6

V

BOR or LPBOR disabled(3)
Power-on Reset Rearm Voltage(2)
D005 VPORR

1.25

V

BOR or LPBOR disabled(3)
VDD Rise Rate to ensure internal Power-on Reset signal(2)
D006 SVDD 0.05

V/ms BOR or LPBOR disabled(3)

Data in “Typ.” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested.

Note:
  1. This is the limit to which VDD can be lowered in Sleep mode without losing RAM data.
  2. See the following figure: POR and POR REARM with Slow Rising VDD.
  3. Please see 38.4.5 Reset, WDT, Oscillator Start-up Timer, Power-up Timer, Brown-Out Reset and Low-Power Brown-Out Reset Specifications for BOR and LPBOR trip point information.
Figure 38-2. POR and POR Rearm with Slow Rising VDD
Note:
  1. When NPOR is low, the device is held in Reset.
  2. TPOR 1 μs typical.
  3. TVLOW 2.7 μs typical.