MSP430F435IPZ datasheet(57/85 Pages) TI

57 / 85 page

MSP430x43x, MSP430x44x

MIXED SIGNAL MICROCONTROLLER

SLAS344A – JANUARY 2002 – REVISED FEBRUARY 2002

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature (unless otherwise

noted)

POR/brownout reset (BOR) (see Note 1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

td(BOR)

dVCC/dt ≥ 30 V/ms (see Note 2)

150

µs

td(BOR)

dVCC/dt ≤ 30 V/ms (see Note 2)

2000

µs

VCC(start)

dVCC/dt ≤ 3 V/s (see Figure 17)

0.7

× V(B_IT–)

V(B_IT–)

Brownout

dVCC/dt ≤ 3 V/s (see Figure 17 through Figure 19)

0.9

1.35

1.71

Vhys(B_IT–)

dVCC/dt ≤ 3 V/s (see Figure 17)

130

180

t(reset)

Pulse length needed at RST/NMI pin to accepted reset internally,

VCC = 2.2 V/3 V

µs

NOTES:

1. The current consumption of the brownout module is already included in the ICC current consumption data. The voltage level V(B_IT–)

+ Vhys(B_IT–) is ≤ 1.8 V.

2. This parameter is not production tested, assured by design.

typical characteristics

t d(BOR)

VCC

V(B_IT–)

Vhys(B_IT–)

VCC(start)

Figure 17. POR/Brownout Reset (BOR) vs Supply Voltage

VCC(min)

VCC

3 V

t pw

0.5

1.5

0.001

1000

Vcc = 3 V

typical conditions

1 ns

tpw – Pulse Width – µs

Figure 18. V(CC)min Level With a Square Voltage Drop to Generate a POR/Brownout Signal

MSP430F435IPZ Datasheet(PDF) 57 Page - Texas Instruments

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