Texas Instruments MSP430G2755, Руководство пользователя

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C
LOAD
− External Capacitance − pF
0.00
0.15
0.30
0.45
0.60
0.75
0.90
1.05
1.20
1.35
1.50
10 50 100
P1.y
P2.0 to P2.5
P2.6 and P2.7
V
CC
= 3.0 V
fosc
−
T
ypical Oscillation Frequency
−
MHz
C
LOAD
− External Capacitance − pF
0.00
0.15
0.30
0.45
0.60
0.75
0.90
1.05
1.20
1.35
1.50
10 50 100
P1.y
P2.0 to P2.5
P2.6 and P2.7
V
CC
= 2.2 V
fosc
−
T
ypical Oscillation Frequency
−
MHz
MSP430G2955
MSP430G2855
MSP430G2755
SLAS800 – MARCH 2013 www.ti.com
Pin-Oscillator Frequency – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
P1.y, C
L
= 10 pF, R
L
= 100 k Ω
(1) (2)
1400
fo
P1.x
Port output oscillation frequency 3 V kHz
P1.y, C
L
= 20 pF, R
L
= 100 k Ω
(1) (2)
900
P2.0 to P2.5, C
L
= 10 pF, R
L
= 100 k Ω
(1) (2)
1800
fo
P2.x
Port output oscillation frequency 3 V kHz
P2.0 to P2.5, C
L
= 20 pF, R
L
= 100 k Ω
(1) (2)
1000
fo
P2.6/7
Port output oscillation frequency P2.6 and P2.7, C
L
= 20 pF, R
L
= 100 k
Ω
(1) (2)
3 V 700 kHz
P3.y, C
L
= 10 pF, R
L
= 100 k Ω
(1) (2)
1800
fo
P3.x
Port output oscillation frequency 3 V kHz
P3.y, C
L
= 20 pF, R
L
= 100 k Ω
(1) (2)
1000
P4.y, C
L
= 10 pF, R
L
= 100 k Ω
(1) (2)
1800
fo
P4.x
Port output oscillation frequency 3 V kHz
P4.y, C
L
= 20 pF, R
L
= 100 k Ω
(1) (2)
1000
(1) A resistive divider with two 50-k Ω resistors between V
CC
and V
SS
is used as load. The output is connected to the center tap of the
divider.
(2) The output voltage reaches at least 10% and 90% V
CC
at the specified toggle frequency.
Typical Characteristics, Pin-Oscillator Frequency
TYPICAL OSCILLATING FREQUENCY TYPICAL OSCILLATING FREQUENCY
vs vs
LOAD CAPACITANCE LOAD CAPACITANCE
A. One output active at a time. A. One output active at a time.
Figure 10. Figure 11.
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