For LCD_C blink function of MSP430FR6989IPZ

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 * register values and settings such as the clock configuration and care must
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//******************************************************************************
//  MSP430FR69x Demo - LCD_C, 4-Mux example, display "430" string on the LCD.
//
//  Description: This examples configures the LCD in 4-Mux mode and displays
//  "430" on a TI LCD. This example was tested on EVM430-EXPFR6989.
//  This example would need to be modified based on the final LCD and GPIO
//  routing where lcd_num[] would need to be modified.
//  The internal voltage is sourced to v2 through v4 and v5 is connected to
//  ground. Charge pump is enabled.
//
//  It uses LCD pin L0~L21 and L26~L43 as segment pins.
//  f(LCD) = 32768Hz/((1+1)*2^4) = 1024Hz, ACLK = ~32768Hz,
//  MCLK = SMCLK = default DCODIV ~1MHz.
//
//                 MSP430FR6989 / EVM430-EXPFR6989
//              -----------------
//          /|\|                 |
//           | |              XIN|--
//  GND      --|RST              |  ~32768Hz
//   |         |             XOUT|--
//   |         |                 |
//   |         |             COM3|----------------|
//   |         |             COM2|---------------||
//   |--4.7uF -|LCDCAP       COM1|--------------|||
//             |             COM0|-------------||||
//             |                 |    -------------
//             |           L0~L21|---| 1 2 3 4 5 6 |
//             |          L26~L43|    -------------
//             |                 |       TI LCD
//
//   William Goh
//   Texas Instruments Inc.
//   August 2014
//   Built with IAR Embedded Workbench V5.60 & Code Composer Studio V6.0
//*****************************************************************************
#include "msp430.h"

const unsigned char lcd_num[10] = {
    0xFC,        // 0
    0x60,        // 1
    0xDB,        // 2
    0xF3,        // 3
    0x67,        // 4
    0xB7,        // 5
    0xBF,        // 6
    0xE0,        // 7
    0xFF,        // 8
    0xF7,        // 9
};

int main(void)
{
    WDTCTL = WDTPW | WDTHOLD;               // Stop WDT

    PJSEL0 = BIT4 | BIT5;                   // For LFXT

    //set all pins output low for low power
    P1OUT = 0;
    P1DIR = 0xFF;
    P2OUT = 0;
    P2DIR = 0xFF;
    P3OUT = 0;
    P3DIR = 0xFF;
    P4OUT = 0;
    P4DIR = 0xFF;
    P5OUT = 0;
    P5DIR = 0xFF;
    P6OUT = 0;
    P6DIR = 0xFF;
    P7OUT = 0;
    P7DIR = 0xFF;
    P8OUT = 0;
    P8DIR = 0xFF;
    P9OUT = 0;
    P9DIR = 0xFF;
    P10OUT = 0;
    P10DIR = 0x03;

    //Initialize LCD segments 0 - 21; 26 - 43
    //this will override the GPIO DIR and OUT setting for these pins (see datasheet)
    LCDCPCTL0 = 0xFFFF;
    LCDCPCTL1 = 0xFC3F;
    LCDCPCTL2 = 0x0FFF;

    // Disable the GPIO power-on default high-impedance mode
    // to activate previously configured port settings
    PM5CTL0 &= ~LOCKLPM5;

    // Configure LFXT 32kHz crystal
    CSCTL0_H = CSKEY >> 8;                  // Unlock CS registers
    CSCTL4 &= ~LFXTOFF;                     // Enable LFXT
    do
    {
      CSCTL5 &= ~LFXTOFFG;                  // Clear LFXT fault flag
      SFRIFG1 &= ~OFIFG;
    }while (SFRIFG1 & OFIFG);               // Test oscillator fault flag
    CSCTL0_H = 0;                           // Lock CS registers

    // Initialize LCD_C
    // ACLK, Divider = 1, Pre-divider = 16; 4-pin MUX
    LCDCCTL0 = LCDDIV__1 | LCDPRE__16 | LCD4MUX | LCDLP;

    // VLCD generated internally,
    // V2-V4 generated internally, v5 to ground
    // Set VLCD voltage to 2.60v
    // Enable charge pump and select internal reference for it
    LCDCVCTL = VLCD_1 | VLCDREF_0 | LCDCPEN;

    LCDCCPCTL = LCDCPCLKSYNC;               // Clock synchronization enabled

    LCDCMEMCTL = LCDCLRM;                   // Clear LCD memory

    // Display "4" on Segment 8,9
    LCDM5 = lcd_num[4];

    // Display "3" on " on Segment 12,13
    LCDM7 = lcd_num[3];

    // Display "0" on " on Segment 16,17
    LCDM9 = lcd_num[0];

    //Turn LCD on
    LCDCCTL0 |= LCDON;

    __delay_cycles(10000);

    //uncomment to test with LCD off!
/*    LCDCCTL0 &= ~LCDON; //turn off LCD
    // disable all LCD segments
    //when you do this, GPIO DIR and OUT settings will then take effect instead
    LCDCPCTL0 = 0;
    LCDCPCTL1 = 0;
    LCDCPCTL2 = 0;*/

    __bis_SR_register(LPM3_bits | GIE);
    __no_operation();

    return 0;
}