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KTZ8866

January 2022 - Revision 04b

Page 29 of 37

Company Confidential

Table 12. LCD_CFG1 Register

ADDRESS

MODE

RESET VALUE: 0x18

0x09

R/W

BIT

NAME

POR

DESCRIPTION

7

LCD_EN

0

0 = Bias supply off (I2C and external) (Default)

1 = Normal mode

6:5

RSVD

00

4

OUTP_DISCH

1

0 = No pulldown on OUTP

1 = Pulldown on OUTP when in shutdown (Default)

3

OUTN_DISCH

1

0 = No pulldown on OUTN

1 = Pulldown on OUTN when in shutdown (Default)

2

OUTP_EN

0

0 = OUTP disabled (Default)

1 = OUTP enabled

1

OUTN_EN

0

0 = OUTN disabled (Default)

1 = OUTN enabled

0

EXT_EN

0

Activates external enables (ENP and ENN)

0 = External enables are disabled. OUTP and OUTN can only be

enabled via bit OUTP_EN and OUTN_EN, respectively (Default)

1 = External enables are enabled. OUTP and OUTN can only be enabled

via pin ENP and ENN, respectively.

Table 13. LCD_CFG2 Register

ADDRESS

MODE

RESET VALUE: 0x11

0x0A

R/W

BIT

NAME

POR

DESCRIPTION

7:6

BIAS_SHORT_MODE

00

0X = Flag only (Default)

10 = Flag + shutdown VOUTP/VOUTN

11 = Flag + shutdown VOUTP/VOUTN/Backlight

5:4

VOUTP_RAMP

01

VOUTP ramp time, low to high:

00 = 228µs

01 = 456µs (Default)

10 = 684µs

11 = 912µs

3:0

VOUTN_RAMP

0001

VOUTN ramp time, high to low:

0000 = 456µs

0001 = 912µs (Default)

0010 = 1368µs

0011 = 1824µs

0100 = 2280µs

0101 = 2736µs

0110 = 3192µs

0111 = 3648µs

1000 = 4104µs

1001 = 4560µs

1010 = 5016µs

1011 = 5472µs

1100 = 5928µs

1101 = 6384µs

1110 = 6840µs

1111 = 7296µs

Note:

1.

For VOUTP_RAMP time, it is fixed slew rate ramp strategy, the ramp time value is given by assuming OUTP = 5.75V. If OUTP is set 5.5V and

VOUTP_RAMP = 01, then actual ramp time will be 456*5.5/5.75 = 436µs.

2.

For VOUTN_RAMP time, it is fixed slew rate ramp strategy, the ramp time value is given by assuming OUTN = -5.75V. If OUTN is set -5.5V and

VOUTN_RAMP = 0001, then actual ramp time will be 912*5.5/5.75 = 872µs.