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SM89516B Datasheet(PDF) 46 Page - SyncMOS Technologies,Inc |
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SM89516B Datasheet(HTML) 46 Page - SyncMOS Technologies,Inc |
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46 / 49 page  SM89516B 8-Bit Micro-controller 64KB Flash & 1KB RAM embedded Specifications subject to change without notice contact your sales representatives for the most recent information. ISSFD-M087 Ver D SM89516B 08/07/2015 - 46 - 13. Two-Wire Series Interface (TWSI) Two Wire Serial Interface, is a serial interface in SM89516B, that is function compatible with IIC 400kps specification and is capable to communicate with standard IIC devices via configuring SM89516B as one of IIC device types - master transmitter, master receiver, slave transmitter or slave receiver device. Mnemonic Description Dir. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 RST TWSI P1CON P1 Control Register 9BH SDAE SCLE - - PWM1 E PWM0 E - - 00H TWSIS TWSI Status Register C0H RXIF TXIF TFAIL NAKIF - RXACK MST TXACK 00H TWSIA TWSI Address Register C1H ADR.6 ADR.5 ADR.4 ADR.3 ADR.2 ADR.1 ADR.0 ADR MK A0H TWSIC1 TWSIC Control Register 1 C2H TWSIE - - - Bus Busy TWSIF S2 TWSIF S1 TWSIF S0 01H TWSIC2 TWSIC Control Register 2 C3H MATC H SRW - - RESTA RT - - MRW 00H TWSITXD TWSI TX Data Register C4H TXD.7 TXD.6 TXD.5 TXD.4 TXD.3 TXD.2 TXD.1 TXD.0 FFH TWSIRXD TWSI RX Data Register C5H RXD.7 RXD.6 RXD.5 RXD.4 RXD.3 RXD.2 RXD.1 RXD.0 00H IFR Interrupt Flag Register AAH - - - - - - TWSIIF - 00H Mnemonic: P1CON Address: 9Bh 7 6 5 4 3 2 1 0 Reset SDAE SCLE - - PWM1E PWM0E - - 00h SDAE: Set 1 to configure P1[7] as SDA pin of TWSI. SCLE: Set 1 to configure P1[6] as SCL pin of TWSI. Mnemonic: TWSIS Address: C0h 7 6 5 4 3 2 1 0 Reset RXIF TXIF TFAIL NAKIF - RXACK MST TXACK 00h RXIF: TWSI interrupt flag for data receiving. It is set after the TWSI RXD (Receive Data Buffer) is loaded with new received data. TXIF: TWSI interrupt flag for data transmitting. It is set when the data of TWSI TXD (Transmit Data Buffer) is downloaded onto the shift register or the TWSIA is downloaded onto the shift register at Master Transmit mode. TFAIL: This flag is set when the data transmit is failed. (Master mode only) NAKIF: Non-acknowledge interrupt flag. It is only set in the master mode when there is no acknowledge bit detected after one byte data or calling address is transferred. RXACK: The acknowledge status indicator. When clear, it means an acknowledge |
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