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HT67F60 Datasheet(PDF) 174 Page - Holtek Semiconductor Inc |
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HT67F60 Datasheet(HTML) 174 Page - Holtek Semiconductor Inc |
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174 / 242 page  Rev. 1.50 174 March 06 , 2012 Rev. 1.50 175 March 06 , 2012 HT67F30/HT67F40/HT67F50/HT67F60 TinyPowerTM A/D Flash Type 8-Bit MCU with LCD & EEPRO The RXAK flag is the receiver acknowledge flag. When the RXAK flag is "0", it means that a acknowledge signal has been received at the 9th clock, after 8 bits of data have been transmitted. When the slave device in the transmit mode, the slave device checks the RXAK flag to determine if the master receiver wishes to receive the next byte. The slave transmitter will therefore continue sending out data until the RXAK flag is "1". When this occurs, the slave transmitter will release the SDA line to allow the master to send a STOP signal to release the I2C Bus. The SIMD register is used to store the data being transmitted and received. The same register is used by both the SPI and I2C functions. Before the device writes data to the SPI bus, the actual data to be transmitted must be placed in the SIMD register. After the data is received from the SPI bus, the device can read it from the SIMD register. Any transmission or reception of data from the SPI bus must be made via the SIMD register. ● SIMD Register Bit 7 6 5 4 3 2 1 0 Name D7 D6 D5 D4 D3 D2 D1 D0 R/W R/W R/W R/W R/W R/W R/W R/W R/W POR x x x x x x x x "X" unknown ● SIMA Register Bit 7 6 5 4 3 2 1 0 Name IICA6 IICA5 IICA4 IICA3 IICA2 IICA1 IICA0 — R/W R/W R/W R/W R/W R/W R/W R/W — POR x x x x x x x — "X" unknown Bit 7~1 IICA6~ IICA0: I2C slave address IICA6~ IICA0 is the I2C slave address bit 6~ bit 0. The SIMA register is also used by the SPI interface but has the name SIMC2. The SIMA register is the location where the 7-bit slave address of the slave device is stored. Bits 7~ 1 of the SIMA register define the device slave address. Bit 0 is not defined. When a master device, which is connected to the I2C bus, sends out an address, which matches the slave address in the SIMA register, the slave device will be selected. Note that the SIMA register is the same register address as SIMC2 which is used by the SPI interface. Bit 0 Undefined bit This bit can be read or written by user software program. I 2 C Da ta R eg is te r (S IM D) Sl av e Ad dr e ss Re gi st er (S IM A) Sh i ft R egi st er Di re ct i on Co nt ro l M U X A ddr e ss Ma tc h HA AS B it I 2 C In te rr up t Da ta i n LS B Da ta O ut M SB Tr ans mi t/R ec ei ve C ont ro l Un it 8- bi t D at a Co mp le te De te c t S ta rt o r St op Da ta B us A ddr es s Co mp ar at or E nabl e/ Di s abl e A ck now le dge R ead/ wr it e Sl av e SR W Bi t HB B Bi t HT X Bi t SC L Pi n SD A Pi n HC F Bi t I2C Block Diagram |
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