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UPSD3234AV-40T1T Datasheet(PDF) 5 Page - STMicroelectronics |
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UPSD3234AV-40T1T Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 176 page 5/176 µPSD323X STANDARD SERIAL INTERFACE (UART) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Multiprocessor Communications . .... . . . . . . . . ... ... . . . . . . . . ... .. .. ... . . . .... . ... .. .60 Serial Port Control Register. .... . . .. .. .. .. . . . . . . . . . . .. . ... . . . . . . . . . ... .. .. ... .. . ..60 Serial Port Control Register (SCON) (Table 43.). . . .... . . . ... . . . . . . . . . . . . . ... ... . . . .... 60 Description of the SCON Bits (Table 44.) . . . . . . . .... . ... .. .. .. . . . . . . . ... .. .. . . ... .. . . 61 Timer 1-Generated Commonly Used Baud Rates (Table 45.) . . . . . . . . . . . . . . .... . . ... .. ... 62 Serial Port Mode 0, Block Diagram (Figure 27.) . . . . . . . . . . . . . . . . . . . . . .... . ... .. . . ... ... 65 Serial Port Mode 0, Waveforms (Figure 28.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Serial Port Mode 1, Block Diagram (Figure 29.) . . . . . . . . . . . . . . . . . . . . . .... . ... .. . . ... ... 66 Serial Port Mode 1, Waveforms (Figure 30.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Serial Port Mode 2, Block Diagram (Figure 31.) . . . . . . . . . . . . . . . . . . . . . .... . ... .. . . ... ... 67 Serial Port Mode 2, Waveforms (Figure 32.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Serial Port Mode 3, Block Diagram (Figure 33.) . . . . . . . . . . . . . . . . . . . . . .... . ... .. . . ... ... 68 Serial Port Mode 3, Waveforms (Figure 34.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 ANALOG-TO-DIGITAL CONVERTOR (ADC) .... . ... .. .. .. . . . . . . . . . . . . ... . . . .... . ... .. .70 ADC Interrupt. . .... .. . . . . . . . . .... . ... .. . . . . .... .... .. . .... .. . . . . . . ... .. . . . . . . . . 70 A/D Block Diagram (Figure 35.). . . . . . . . . . . . . . . . .... . . . ... . . . . . . . . . . . . . ... ... . . . .... 70 ADC SFR Memory Map (Table 46.) . . .... . . ... .. ... .. .. . . . . . . . . . . . . . . .... . . ... .. ... 71 Description of the ACON Bits (Table 47.) . . . . . . . .... . ... .. .. .. . . . . . . . ... .. .. . . ... .. . . 71 ADC Clock Input (Table 48.) . . . . .... . ... .. . . ... ... . ... .. . . ... .. . .... . ... .. .. ... ... 71 PULSE WIDTH MODULATION (PWM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 4-channel PWM unit (PWM 0-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Four-Channel 8-bit PWM Block Diagram (Figure 36.).... . .... . . . . ... . ... .. . . ... .. . .... . 73 PWM SFR Memory Map (Table 49.) . . . . . . . . . . . . . . ... . . . . . . . . . . . . . ... . ... . . .. .. .. .. .74 Programmable Period 8-bit PWM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Programmable PWM 4 Channel Block Diagram (Figure 37.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 PWM 4 Channel Operation . . . . . . . . . . . . . . . ... .. ... .. .. . . . . . . . ... .. .. .... . . ... .. ... 76 PWM 4 With Programmable Pulse Width and Frequency (Figure 38.) . . . . . . . . . . . . . . . . . .... . 76 I2C INTERFACE . . .... .. . . . . . . . . .... . ... .. . . . . .... .... .. . . . . . . . . . . . . . ... .. . . . . .... 77 Block Diagram of the I2C Bus Serial I/O (Figure 39.) . . . . . . . . . . . . . . . . . . . . . . . . .... . ... .. .77 Serial Control Register (SxCON: S1CON, S2CON) (Table 50.) . . . . . . . . . . . . . . . . . . . . . . . .... 78 Description of the SxCON Bits (Table 51.) . . . ... .. ... .. .. . . . . . . . . . . . . . . .... . . ... .. ... 78 Selection of the Serial Clock Frequency SCL in Master Mode (Table 52.) . . . . . . . . . . . . . . . .... 78 Serial Status Register (SxSTA: S1STA, S2STA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Data Shift Register (SxDAT: S1DAT, S2DAT) . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . ... .. ... 79 Serial Status Register (SxSTA) (Table 53.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... .. ... 79 Description of the SxSTA Bits (Table 54.) . . . . ... .. .... ... . . . . . . . . . . . . . . . . . . . . ... .. ... 79 Data Shift Register (SxDAT: S1DAT, S2DAT) (Table 55.) . .... .... ... . ... .. .. ... .. . . ... . 79 Address Register (SxADR: S1ADR, S2ADR) . . . . . .... . . . ... . . . . . . . . . . . . . ... ... . . . .... 80 Address Register (SxADR) (Table 56.) . . . . . . ... .. .... ... . . . . . . . . . . . . . . . . . .. . ... .. ... 80 Start /Stop Hold Time Detection Register (S1SETUP, S2SETUP) (Table 57.) . . . . . . . . . . . . . . . . 80 System Cock of 40MHz (Table 58.). . . . . . . . . . . . . . . . . . . .... .... ... . . . . . . . . ... .. . . ... . 80 System Clock Setup Examples (Table 59.) . . . . . . . .... .... .. . . . . . . . . . . . . . ... .. . . . . .... 80 Programmer’s Guide for I2C and DDC2 . .... .. . .... . ... .. .. .. .... . . . ... . . . . . . . . . . . . . 81 |
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