MSP430F4783IPZ datasheet(30/79 Pages) TI

30 / 79 page

MSP430F47x3, MSP430F47x4

MIXED SIGNAL MICROCONTROLLER

SLAS545C − MAY 2007 − REVISED MARCH 2011

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (continued)

POR/brownout reset (BOR) (see Notes 1 and 2)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

VCC(start)

(see Figure 8)

dVCC/dt ≤ 3 V/s

0.7

× V(B_IT−)

V(B_IT−)

(see Figure 8 through Figure 10)

dVCC/dt ≤ 3 V/s

1.71

Vhys(B_IT−)

(see Figure 8)

dVCC/dt ≤ 3 V/s

130

180

td(BOR)

(see Figure 8)

2000

μs

t(reset)

Pulse length needed at RST/NMI pin

to accepted reset internally

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 ≤ 1.8V.

2. During power up, the CPU begins code execution following a period of td(BOR) after VCC = V(B_IT−) + Vhys(B_IT−). The default FLL+

settings must not be changed until VCC ≥ VCC(min), where VCC(min) is the minimum supply voltage for the desired operating frequency.

See the MSP430x4xx Family User’s Guide (SLAU056) for more information on the brownout/SVS circuit.

t d(BOR)

VCC

V(B_IT−)

Vhys(B_IT−)

VCC(start)

Figure 8. POR/Brownout Reset (BOR) vs Supply Voltage

MSP430F4783IPZ Datasheet(PDF) 30 Page - Texas Instruments

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