MSP430FE42x2

MIXED SIGNAL MICROCONTROLLER

SLAS616 − JULY 2008

21

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

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

noted) (continued)

wake-up LPM3

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

f = 1 MHz

6

td(LPM3)

Delay time

f = 2 MHz

VCC = 3 V

6

µs

td(LPM3)

Delay time

f = 3 MHz

VCC 3 V

6

µs

RAM (see Note 1)

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

VRAMh

CPU halted (see Note 1)

1.6

V

NOTE 1: This parameter defines the minimum supply voltage when the data in the program memory RAM remain unchanged. No program

execution should take place during this supply voltage condition.

LCD

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V(33)

Voltage at R33

2.5

VCC + 0.2

V(23)

Analog voltage

Voltage at R23

V

3V

(V33−V03) ×

2/3 + V03

V

V(13)

Analog voltage

Voltage at R13

VCC = 3 V

(V(33)−V(03)) ×

1/3 + V(03)

V

V(33) − V(03)

Voltage at R33/R03

2.5

VCC +0.2

I(R03)

R03 = VSS

Nl

dtll

t

d

±20

I(R13)

Input leakage

R13 = VCC/3

No load at all segment and

common lines VCC =3V

±20

nA

I(R23)

Input leakage

R23 = 2

× VCC/3

common lines, VCC = 3 V

±20

nA

V(Sxx0)

V(03)

V(03) − 0.1

V(Sxx1)

Segment line

I

3 AV

3V

V(13)

V(13) − 0.1

V

V(Sxx2)

Segment line

voltage

I(Sxx) = −3 µA, VCC = 3 V

V(23)

V(23) − 0.1

V

V(Sxx3)

V(33)

V(33) + 0.1

USART0 (see Note 1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

t(τ)

USART0: deglitch time

VCC = 3 V, SYNC = 0, UART mode

150

280

500

ns

NOTE 1: The signal applied to the USART0 receive signal/terminal (URXD0) should meet the timing requirements of t(τ) to ensure that the URXS

flip-flop is set. The URXS flip-flop is set with negative pulses meeting the minimum-timing condition of t(τ). The operating conditions to

set the flag must be met independently from this timing constraint. The deglitch circuitry is active only on negative transitions on the

URXD0 line.