HT67F60 datasheet(173/242 Pages) HOLTEK

173 / 242 page

HT67F30/HT67F40/HT67F50/HT67F60

TinyPowerTM A/D Flash Type 8-Bit MCU with LCD & EEPROM

Rev. 1.50

172

March 06 , 2012

Rev. 1.50

173

March 06 , 2012

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SIMC1 Register

Bit

Name

HCF

HAAS

HBB

HTX

TXAK

SRW

IAMWU

RXAK

R/W

POR

Bit 7

HCF: I2C Bus data transfer completion flag

0: Data is being transferred

1: Completion of an 8-bit data transfer

The HCF flag is the data transfer flag. This flag will be zero when data is being

transferred. Upon completion of an 8-bit data transfer the flag will go high and an

interrupt will be generated.

Bit 6

HAAS: I2C Bus address match flag

0: Not address match

1: Address match

The HASS flag is the address match flag. This flag is used to determine if the slave

device address is the same as the master transmit address. If the addresses match then

this bit will be high, if there is no match then the flag will be low.

Bit 5

HBB: I2C Bus busy flag

0: I2C Bus is not busy

1: I2C Bus is busy

The HBB flag is the I2C busy flag. This flag will be "1" when the I2C bus is busy

which will occur when a START signal is detected. The flag will be set to "0" when

the bus is free which will occur when a STOP signal is detected.

Bit 4

HTX: Select I2C slave device is transmitter or receivera

0: Slave device is the receiver

1: Slave device is the transmitter

Bit 3

TXAK: I2C Bus transmit acknowledge flag

0: Slave send acknowledge flag

1: Slave do not send acknowledge flag

The TXAK bit is the transmit acknowledge flag. After the slave device receipt of 8-bits

of data, this bit will be transmitted to the bus on the 9th clock from the slave device.

The slave device must always set TXAK bit to "0" before further data is received.

Bit 2

SRW: I2C Slave Read/Write flag

0: Slave device should be in receive mode

1: Slave device should be in transmit mode

The SRW flag is the I2C Slave Read/Write flag. This flag determines whether the

master device wishes to transmit or receive data from the I2C bus. When the

transmitted address and slave address is match, that is when the HAAS flag is set high,

the slave device will check the SRW flag to determine whether it should be in transmit

mode or receive mode. If the SRW flag is high, the master is requesting to read data

from the bus, so the slave device should be in transmit mode. When the SRW flag is

zero, the master will write data to the bus, therefore the slave device should be in

receive mode to read this data.

Bit 1

IAMWU: I2C Address Match Wake-up Control

0: Disable

1: Enable

This bit should be set to "1" to enable I2C address match wake up from SLEEP or

IDLE Mode.

Bit 0

RXAK: I2C Bus Receive acknowledge flag

0: Slave receive acknowledge flag

1: Slave do not receive acknowledge flag

HT67F60 Datasheet(PDF) 173 Page - Holtek Semiconductor Inc

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