3.6 Electrical Characteristics - RSTCTRL and BOD

A clarification has been made to change the Brown-out Detect Voltage (VBOD) in the Reset, WDT, Oscillator Start-up Timer, Power-up Timer and Brown-out Detector Specifications table.

Table 35-15. Reset, WDT, Oscillator Start-up Timer, Power-up Timer, Brown-out Detector Specifications

SymbolDescriptionMin.Typ. ✝Max.UnitConditions
tRST * RESET pin pulse-width low to ensure a Reset2.5——μs
RRST_UP * RESET pin pull-up resistor—35—kΩ
TOST *Oscillator start-up timer period(1)—1024—cycles
VBOD+Brown-out Detect Voltage, rising slope(2)—

1.75

1.90

2.60

4.30

—

2.10

2.80

4.60

V

V

V

V

BODLEVEL0

BODLEVEL1

BODLEVEL2

BODLEVEL3

VBOD-Brown-out Detect Voltage, falling slope(2)

1.62

1.80

2.43

4.05

1.75

1.90

2.60

4.30

—

V

V

V

V

BODLEVEL0

BODLEVEL1

BODLEVEL2

BODLEVEL3

VBOD_HYSBrown-out Detect hysteresis—25—mV
tBOD_STBrown-out Detect start-up time from sleep—30—μs
tBODBOD sampling time when used in Sampling mode—1/fBOD—ms
tBOD_RSTBrown-out Reset response time—4—μsVDD = VBOD - 0.1V

✝ Unless otherwise specified, data in the “Typ.” column is at TA = 25°C and VDD = 3.0V. These parameters are not tested and are for design guidance only.

* These parameters are characterized but not tested in production.

Note:
  1. By design, the Oscillator Start-up Timer (TOST) counts the first 1024 cycles, independent of frequency.
  2. VDD and GND must be capacitively decoupled as close to the device as possible to ensure these voltage tolerances. Recommended values are 0.1 μF and 0.01 μF in parallel.