Datasheet

R13

R23

R33

LCDCAP1

LCDCAP0

0.1 Fμ

0.1 Fμ 0.1 Fμ 0.1 Fμ

MSP430FR4133, MSP430FR4132, MSP430FR4131

SLAS865B –OCTOBER 2014–REVISED AUGUST 2015

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6.9.11 Liquid Crystal Display (LCD)

The LCD driver generates the segment and common signals to drive segment liquid crystal display (LCD)

glass. The LCD controller has dedicated data memories to hold segment drive information. Common and

segment signals are generated as defined by the mode. Static, 2-mux, 3-mux, up to 8-mux LCDs are

supported. The module can provide an LCD voltage independent from the main supply voltage with its

integrated charge pump. The LCD display contrast can be trimmed by setting the LCD drive voltage. The

LCD module can be fully functional in any power mode from AM to LPM3.5.

When supplied by the on-chip charge pump with on-chip regulator reference, the LCD driver needs five

pins and four external 0.1-µF capacitors to achieve low-power consumption during operation. Figure 6-1

shows the recommended connections.

Figure 6-1. LCD Power Supply Configuration With On-Chip Charge Pump and Regulator Reference

The LCD contains 20 16-bit words (40 bytes) display memory. The use of memory is flexible, depending

on the selected mode:

• 4-mux mode

– LCDM0 to LCDM19 can be used for LCD display contents. If it is not used as LCD drive pin, the

corresponding LCDMx can be used for user data (up to 20 bytes).

– LCDBM0 to LCDBM19 can be used for LCD blinking contents. If it is not used as blinking, the

corresponding LCDBMx can be used for user data (up to 20 bytes).

• 8-mux mode

– LCDM0 to LCDM39 can be used for LCD display contents. If it is not used as LCD drive pin, the

corresponding LCDMx can be used for user data (up to 40 bytes).

6.9.12 Embedded Emulation Module (EEM)

The EEM supports real-time in-system debugging. The EEM on these devices has the following features:

• Three hardware triggers or breakpoints on memory access

• One hardware trigger or breakpoint on CPU register write access

• Up to four hardware triggers can be combined to form complex triggers or breakpoints

• One cycle counter

• Clock control on module level

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Product Folder Links: MSP430FR4133 MSP430FR4132 MSP430FR4131