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

Symbol Description Min. Typ. ✝ Max. Unit Conditions
tRST * RESET pin pulse-width low to ensure a Reset 2.5 — — 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_HYS Brown-out Detect hysteresis — 25 — mV
tBOD_ST Brown-out Detect start-up time from sleep — 30 — μs
tBOD BOD sampling time when used in Sampling mode — 1/fBOD — ms
tBOD_RST Brown-out Reset response time — 4 — μs VDD = 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.