PCA8536 查看數據表（PDF） - NXP Semiconductors.

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PCA8536

Automotive LCD driver for low multiplex rates including a 6 channel PWM generator

NXP Semiconductors. 

NXP Semiconductors

PCA8536

Automotive LCD low multiplex driver with 6 channel PWM generator

8.1.2 Command: OTP-refresh

During production and testing of the device, each IC is calibrated to achieve the specified

accuracy of the frame frequency. This calibration is performed on EPROM cells called

One Time Programmable (OTP) cells. The device reads these cells every time the

OTP-refresh command is sent. This instruction has to be sent after a reset has been

made and before the display is enabled.

This command will be completed after a maximum of 30 ms and requires either the

internal or external clock to run. If the internal oscillator is not used, then a clock must be

supplied to the OSCCLK pin. If the OTP-refresh instruction is sent and no clock is present,

then the request is stored until a clock is available.

Remark: It is recommended not to enter power-down mode during the OTP refresh cycle.

Table 6. OTP-refresh - OTP-refresh command bit description

Bit

Symbol

Value

Description

7 to 0 -

1111 0000

fixed value

8.1.3 Command: PWM-inversion

It is possible to invert the output of the PWM generators. This function may be useful for

counteracting EMC issues. The description of this mode can be found in Section 8.11.2 on

page 45.

Table 7. PWM-inversion - PWM inversion command bit description

Bit

Symbol

Value

Description

7 to 1 -

0001 010

fixed value

0

PWMI

PWM inversion mode

1

PWM inversion mode on

0[1]

PWM inversion mode off

[1] Default value.

PCA8536

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 2 — 21 February 2012

© NXP B.V. 2012. All rights reserved.

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