MSP430F2002IPW datasheet(27/88 Pages) TI

27 / 88 page

MSP430x20x1, MSP430x20x2, MSP430x20x3

MIXED SIGNAL MICROCONTROLLER

SLAS491D -- AUGUST 2005 -- REVISED SEPTEMBER 2007

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 ≤ 3V/s

0.7 × V(B_IT--)

V(B_IT--)

(see Figure 8 through Figure 10)

dVCC/dt ≤ 3V/s

1.71

Vhys(B_IT--)

(see Figure 8)

dVCC/dt ≤ 3V/s

130

210

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

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

operating frequency.

t d(BOR)

VCC

V(B_IT--)

Vhys(B_IT--)

VCC(start)

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

MSP430F2002IPW Datasheet(PDF) 27 Page - Texas Instruments

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