- 4 -

NJU6060

Ver.2004-04-16

(2) Instructions

3 line type serial interface using a setup of PWM data, ON/OFF of Light Emitting Diode, etc. are made.

The input data and latched at rising edge of chip shift clock (CLK) and the 8-bit data are fetched into the NJU6060 at

the rising edge of chip select (CS). The data to input is MSB first.

Table.1 shows the instruction codes of the NJU6060.

Table 1. Instruction Code

Code

Instruction

D7

D6

D5

D4

D3

D2

D1

D0

Discription

LED1

PWM Data Set

0

0

0

D

D

D

D

D

5-bit PWM data is set.

LED2

PWM Data Set

0

0

1

D

D

D

D

D

5-bit PWM data is set.

LED3

PWM Data Set

0

1

0

D

D

D

D

D

5-bit PWM data is set.

PWM Frequency set

/ OSC ON/OFF

/Output port ON/OFF

0

1

1

OSC

LED1

LED2

LED3

0:(fosc/2)/32

1:(fosc/2)/64

OSC

0:OFF

1:ON

LED1 to 3

0:OFF

1:ON

LED1

PWM Phase set

1

0

0

*

*

*

Phase value

LED2

PWM Phase set

1

0

1

*

*

*

Phase value

LED3

PWM Phase set

1

1

0

*

*

*

Phase value

0,0: Same phase

0,1: 4-step shift

1,0: 8-step shift

1,1: 16-step shift

Test

1

1

1

Test Data

Inhibited command

* : Don’t Care

Note) The “PWM data set”, the “PWM Frequency set” and the “PWM phase set” commands are executed, asynchronously

to the PWM counter, thus the user’s command setting is executed after execution time, which is about 128/fosc if

reason, it is recommended to make sure actual performance is the user’s practical application.

(2-1) Explanation of instruction code

(a) LED1 to 3 PWM Data Set

This instruction set the PWM luminance control Duty data. It sets up for every LED port.

LED1 PWM Data Set

0

0

0

D

D

D

D

D

LED2 PWM Data Set

0

0

1

D

D

D

D

D

LED3 PWM Data Set

0

1

0

D

D

D

D

D

D

:DUTY

0,0,0,0,0 to 1,1,1,1,1