EKTF6708 datasheet(42/158 Pages) EMC

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eKTF6708

8-Bit Microcontroller



IC Product Specification (V1.2) 03.12.2020

(This specification is subject to change without prior notice)

Bit 2 (ACK):

The ACK condition bit is set to 1 by hardware when the device

responds with an acknowledge (ACK). Reset when the device

responds with a not-acknowledge (nACK) signal.

Bit 1 (FULL):

Set by hardware when I

2C Receive Buffer register is full. Reset by

hardware when the MCU reads data from the I

2C Receive Buffer

Bit 0 (EMPTY):

Set by hardware when I

2C Transmit Buffer register is empty and

ACK (or nACK) signal is received. Reset by hardware when the

MCU writes new data into the I

2C Transmit Buffer register.

6.1.37 Bank 0 R31: I2CCR2 (I2C Status and Control Register 2)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

I2CBF

GCEN

I2COPT

BBF

I2CTS1

I2CTS0

I2CEN

R/W

Bit 7 (I2CBF): I2C Busy Flag Bit

0: clear to "0" in Slave mode, if receives a STOP signal or when I2C slave

address does not match.

1: set when I2C communicate with master in slave mode.

*Set when STAR signal, clear when I2C disable or STOP signal for Slave

mode.

Bit 6 (GCEN): I2C General Call Function Enable Bit

0: Disable General Call Function

1: Enable General Call Function

Bit 5 (I2COPT): I2C pin optional bit. It is used to switch the pin position of I2C function.

0: Placed I2C pins in P52 (SDA0) and P53 (SCL0).

1: Placed I2C pins in P54 (SDA1) and P55 (SCL1).

*Default value corresponding code option Word 2 I2COPT

Bit 4 (BBF): Busy Flag Bit. I2C detection is busy in the master mode. Read only.

*Set when STAR signal, clear when STOP signal for Master mode.

Bit 3: Not used, set to “0” all the time.

Bits 2~1 (I2CTS1~I2CTS0): I2C Transmit Clock Select Bits. When using different

operating frequency (Fm), these bits must be set correctly to let SCL clock fill in with

standard/fast mode.

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