MSP430F23X0_08 Datasheet, PDF (53/64 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F23x0
MIXED SIGNAL MICROCONTROLLER
SLAS518A -- AUGUST 2006 -- REVISED MAY 2007
Port P3 pin schematic: P3.0 to P3.5, input/output with Schmitt-trigger
P3REN.x
P3DIR.x
0
Module
direction
1
Direction
0: Input
1: Output
DVSS 0
DVCC 1
Pad Logic
1
P3OUT.x
0
Module X OUT
1
P3SEL.x
P3IN.x
EN
Module X IN
D
Port P3.0 to P3.5 pin functions
PIN NAME (P3.X) X
FUNCTION
P3.0/UCB0STE/
UCA0CLK
0 P3.0 (I/O)
UCB0STE/UCA0CLK (see Notes 1 and 2)
P3.1/UCB0SIMO/
UCB0SDA
1 P3.1 (I/O)
UCB0SIMO/UCB0SDA (see Notes 1, 2 and 3)
P3.2/UCB0SOMI/
UCB0SCL
2 P3.2 (I/O)
UCB0SOMI/UCB0SCL (see Notes 1, 2 and 3)
P3.3/UCB0CLK/
UCA0STE
3 P3.3 (I/O)
UCB0CLK/UCA0STE (see Notes 1 and 2)
P3.4/UCA0TXD/
UCA0SIMO
4 P3.4 (I/O)
UCA0TXD/UCA0SIMO (see Notes 1 and 2)
P3.5/UCA0RXD/
UCA0SOMI
5 P3.5 (I/O)
UCA0RXD/UCA0SOMI (see Notes 1 and 2)
NOTES: 1. X: Don’t care.
2. The pin direction is controlled by the USCI module.
3. In case the I2C functionality is selected the output drives only the logical 0 to V_SS level.
P3.0/UCB0STE/UCA0CLK
P3.1/UCB0SIMO/UCB0SDA
P3.2/UCB0SOMI/UCB0SCL
P3.3/UCB0CLK/UCA0STE
P3.4/UCA0TXD/UCA0SIMO
P3.5/UCA0RXD/UCA0SOMI
CONTROL BITS / SIGNALS
P3DIR.x
P3SEL.x
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
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