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P80CL410HFD Datasheet(PDF) 10 Page - NXP Semiconductors |
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P80CL410HFD Datasheet(HTML) 10 Page - NXP Semiconductors |
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10 / 28 page  Philips Semiconductors Product specification 80CL410/83CL410 Low voltage/low power single-chip 8-bit microcontroller with I2C 1995 Jan 20 10 S1STA (D9H) Status register SC4 SC3 SC2 SC1 SC0 0 0 0 S1STA is an 8-bit read-only special function register. S1STA.3–S1STA.7 hold a status code. S1STA.0–S1STA.2 are held LOW. The contents of S1STA may be used as a vector to a service routine. This optimizes response time of the software and consequently that of the I2C-bus. The following is a list of the status codes: Abbreviations used: SLA: 7-bit slave address R: Read bit W: Write bit ACK: Acknowledgement (acknowledge bit = 0) ACK: Not Acknowledge (acknowledge bit = 1) DATA: 8-bit byte to or from the I2C-bus MST: Master SLV: Slave TRX: Transmitter REC: Receiver MST/TRX mode S1STA value 08H – a START condition has been transmitted 10H – a repeated START condition has been transmitted 18H – SLA and W have been transmitted, ACK received 20H – SLA and W have been transmitted, ACK received 28H – DATA of S1DAT has been transmitted, ACK received 30H – DATA of S1DAT has been transmitted, ACK received 38H – Arbitration lost in SLA, R/W or DATA MST/REC mode S1STA value 08H – a START condition has been transmitted 10H – a repeated START condition has been transmitted 38H – Arbitration lost while returning ACK 40H – SLA and R have been transmitted, ACK received 48H – SLA and R have been transmitted, ACK received 50H – DATA has been received, ACK returned 58H – DATA has been received, ACK returned SLV/REC mode S1STA value 60H – Own SLA and W have been received, ACK returned 68H – Arbitration lost in SLA, R/W as MST. Own SLA and W have been received, ACK returned 70H – General CALL has been received, ACK returned 78H – Arbitration lost in SLA, R/W as MST. General CALL has been received 80H – Previously addressed with own SLA. DATA byte received, ACK returned 88H – Previously addressed with own SLA. DATA byte received, ACK returned 90H – Previously addressed with general CALL. DATA byte has been received, ACK has been returned 98H – Previously addressed with general CALL. DATA byte has been received, ACK has been returned A0H – A STOP condition or repeated START condition has been received while still addressed as SLV/REC or SLV/TRX SLV/TRX mode S1STA value A8H – Own SLA and R have been received, ACK returned B0H – Arbitration lost in SLA, R/W as MST. Own SLA and R have been received, ACK returned B8H – DATA byte has been transmitted, ACK received C0H – DATA byte has been transmitted, ACK received C8H – Last DATA byte has been transmitted (AA = logic 0), ACK received Miscellaneous S1STA value 00H – Bus error during MST mode or selected SLV mode, due to an erroneous START or STOP condition F8H – No relevant state interruption available, SI = 0. S1DAT (DAH) Data Shift Register 76 5 4 3 21 0 Data shift register S1DAT This register contains the serial data to be transmitted or data that has just been received. Bit 7 is transmitted or received first, i.e., data is shifted from left to right. S1ADR (DBH) Slave Address Register 76 5 4 3 21 0 S1ADR.0, GC: 0 = general CALL address is not recognized 1 = general CALL address is recognized S1ADR.7-1: own slave address This 8-bit register may be loaded with the 7-bit slave address, to which the controller will respond when programmed as a slave receiver/transmitter. The LSB bit (GC) is used to determine whether the general CALL address is recognized. Table 3. SCL Frequency BIT RATE (kHz) at fOSC CR2 CR1 CR0 fOSC DIVIDED BY 3.58MHz 6MHz 12MHz 0 0 0 256 14.0 23.4 46.9 0 0 1 224 16.0 26.8 53.6 0 1 0 192 18.6 31.3 62.5 0 1 1 160 22.4 37.5 75.0 1 0 0 960 3.73 6.25 12.5 1 0 1 120 29.8 50 100 1 1 0 60 59.7 100 – 1 1 1 not allowed – – – |
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