MSP430F551X_1 Datasheet, PDF (53/115 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F551x
MSP430F552x
www.ti.com
SLAS590D – OCTOBER 2009 – REVISED APRIL 2010
Outputs – General Purpose I/O (Reduced Drive Strength)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)⁽¹⁾
PARAMETER
V_OH High-level output voltage
V_OL Low-level output voltage
TEST CONDITIONS
I_(OHmax) = –1 mA ⁽²⁾
I_(OHmax) = –3 mA ⁽³⁾
I_(OHmax) = –2 mA⁽²⁾
I_(OHmax) = –6 mA⁽³⁾
I_(OLmax) = 1 mA ⁽²⁾
I_(OLmax) = 3 mA ⁽³⁾
I_(OLmax) = 2 mA ⁽²⁾
I_(OLmax) = 6 mA ⁽³⁾
V_CC
1.8 V
3.0 V
1.8 V
3.0 V
MIN
V_CC – 0.25
V_CC – 0.60
V_CC – 0.25
V_CC – 0.60
V_SS
V_SS
V_SS
V_SS
MAX
V_CC
V_CC
V_CC
V_CC
V_SS + 0.25
V_SS + 0.60
V_SS + 0.25
V_SS + 0.60
UNIT
V
V
(1) Selecting reduced drive strength may reduce EMI.
(2) The maximum total current, I_(OHmax) and I_(OLmax), for all outputs combined, should not exceed ±48 mA to hold the maximum voltage drop
specified.
(3) The maximum total current, I_(OHmax) and I_(OLmax), for all outputs combined, should not exceed ±100 mA to hold the maximum voltage
drop specified.
Output Frequency – General Purpose I/O
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
f_Px.y
Port output frequency
(with load)
TEST CONDITIONS
MIN
(1) (2)_{VCC = 1.8 V}
PMMCOREVx = 0
V_CC = 3 V
PMMCOREVx = 3
f_{Port_CLK} Clock output frequency
ACLK
SMCLK
MCLK
C_L = 20 pF⁽²⁾
V_CC = 1.8 V
PMMCOREVx = 0
V_CC = 3 V
PMMCOREVx = 3
MAX UNIT
16
MHz
25
16
MHz
25
(1) A resistive divider with 2 × R1 between V_CC and V_SS is used as load. The output is connected to the center tap of the divider. For full
drive strength, R1 = 550 Ω. For reduced drive strength, R1 = 1.6 kΩ. C_L = 20 pF is connected to the output to V_SS.
(2) The output voltage reaches at least 10% and 90% V_CC at the specified toggle frequency.
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