STMicroelectronics /STM32U083 /LCD /LCD_CR

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Interpret as LCD_CR

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (B_0x0)LCDEN 0 (B_0x0)VSEL 0 (B_0x0)DUTY0 (B_0x0)BIAS 0 (B_0x0)MUX_SEG 0 (B_0x0)BUFEN

BUFEN=B_0x0, BIAS=B_0x0, MUX_SEG=B_0x0, VSEL=B_0x0, LCDEN=B_0x0, DUTY=B_0x0

Description

LCD control register

Fields

LCDEN

LCD controller enable This bit is set by software to enable the LCD controller/driver. It is cleared by software to turn off the LCD at the beginning of the next frame. When the LCD is disabled, all COM and SEG pins are driven to VSS.

0 (B_0x0): LCD controller disabled

1 (B_0x1): LCD controller enabled

VSEL

Voltage source selection This bit determines the voltage source for the LCD.

0 (B_0x0): Internal source (voltage stepup converter)

1 (B_0x1): External source (VLCD pin)

DUTY

Duty selection These bits determine the duty cycle. Values 101, 110 and 111 are forbidden. Others: Reserved

0 (B_0x0): Static duty

1 (B_0x1): 1/2 duty

2 (B_0x2): 1/3 duty

3 (B_0x3): 1/4 duty

4 (B_0x4): 1/8 duty

BIAS

Bias selector These bits determine the bias used. Value 11 is forbidden.

0 (B_0x0): Bias 1/4

1 (B_0x1): Bias 1/2

2 (B_0x2): Bias 1/3

MUX_SEG

Mux segment enable This bit is used to enable SEG pin remapping. Four SEG pins can be multiplexed with1SEG[31:28] or SEG[15:12]. See Section118.3.7.

0 (B_0x0): SEG pin multiplexing disabled

1 (B_0x1): SEG[31:28] multiplexed with SEG[43:40]

BUFEN

Voltage output buffer enable This bit is used to enable/disable the voltage output buffer for higher driving capability.

0 (B_0x0): Output buffer disabled

1 (B_0x1): Output buffer enabled

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