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1 1 ! IC IC . 2 . I2C . 30 IC . I2C . 2 .. 4. 1. I2C IC . IO.. IC .. 5. 2 . 1-1 . 2.. I2C 100k 400kHz IC 6. 3. 1 MHz . 5 MHz 1-2 . I2C IC 1-1 I2C 2 . I2C . 2 I2C . IC 2 . 7 . 2 I2C . 1 2014 10 176. 4 1 2 I 2 C . 5 MHz 10000. 1. kHz .. 1000. 1 MHz 2. 400kHz 100. 100kHz 3. 1-2 4. 10. I2C .. 5. 112 IC 6.. I2C 7 . 128 . 7. 16 . 112 8. 1-3 I2C 30 I2C . IC. 9.. I2C TWI Two Wire Interface . 10.. SDA SDL 2 .. 11. I2C 2 I2C I2C . GND 3 12. 2. 13. 2 1 SDA Serial I2C . Data 1 SCL . Serial CLock I2C . 14. 2 I2C . 15.. IC . I2C . 16. I2C Inter IC I2C . I 2 NXP 17. I I2C.. IIC . I2C. kinetis ColdFire ST . STM32 STM8 Broadcom 18. Corporation BCM2835 Raspberry Pi Atmel . ATmega48/88/168/328 19. PIC SSP . H8 SH 20. 1-3 I2C I2C . 5. I2C IC . 1 . SPI . I2C / . SPI SPI SPI . 3 . 4 . I2C C I2C I2S SPI . A.

2 I2C I2C . 5 MHz SPI MHz I2C .. I2S D SMBus . I2C PMBus . B Inter IC Sound . PCM IPMI . CD DDC . IC D A ATCA . CLK . MOSI . MISO . CS . CS . 3 4 . A I2C . SPI . I2C. 2 ( ). ( ).. WS . SCK I2S. D-A. DATA 3 ( ).. ( ). PCM .. 3 SPI. 3 4 ( ).. B I2C I2S C I2C I2S SPI . 6 1 2 I 2 C . I2C I2C I2C . UM10204 4 I2C . 1. I2C . SMBus 10kHz 2.. SMBus System Management Bus 3. PMBus Power Management Bus 4. I2C. IPMI. Intelligent Platform Management Interface 5. ATCA. Advanced Telecommunications Computing Architecture . 6. D DDC. Display Data Channel . 7. I2C . 8. I2C NOTE. EEPROM I2C I2C . LCD LED busspecification and user manual . 9. URL http documents/user_ 10. LED A D I2C . D A .. ASIC . http 11.. I2C I2C bus specification / .. NFC and user manual I2C . 12.. 13. RF .. PC . 14.. LED 15.. 16. 1980.

3 I2C 1980 ASIC ASIC 17. I2C. IC .. 18.. 19.. ASIC 20.. 7. 1. 2 . 2. GPIO 8 3. PCAL9554 BPW. PCA9554 ACPI 4. LED . 5. PCAL9554B/C NXP I2C SMBus A V DD .. 8 IO A. VDD 6. GPIO General Purpose Input/Output . SDA SCL .. PCAL9554C I2C . 7. 16 I 2C. Vhys VDD . LED I/O 5V 8.. PCAL9554B/C INT .. 9. 25% 50% 75% 100% 4. 10.. 11. PCAL9554B/C . 100k .. 12. I2C I2C 400kHz FAST . 13.. 14. A0. A1 8-bit P0. P1. 15. A2 P2. SCL. 2C /SMBus /.. P3 16. SDA P4.. write pulse P5. P6 17. read pulse P7. VDD . VDD 18. VSS.. NT 19.. 2-1 PCAL9554B . 20. 41. 10 . LED . 16ch . PCA9955 ATW. Fm+ 16 LED 8bit 256 PWM DAC. LED 125 . PCA9955A NXP I2C 6% PCA9955A . 16 57mA 20V LED LED IC . 57mA . RGBA .. LED LED PWM I2C 1 MHz FAST + . 0 256 . PWM LED 0 256. 122Hz 0 256 . PWM 15Hz 256 122Hz PWM 0. LED 256 .. PCA9955A 3 8 DAC 0.

4 225 A 57mA . LED 20V ACK STOP . Fast-mode Plus Fm+ 1 MHz . 4000pF STOP . OE . OE 16 LED . ON/OFF PWM 3 I2C 125. PCA9955A I2C . I2C . PCA9955A .. I2C SWRST . PCA9955A 8 MHz .. 16 LED 3 ON OFF LED . / LED . EMI 17mA V DD . f SCL 1 MHz Rext 1k LED . 16 0 57mA 57mA . 20V VDD 170 A . REXT 1 HTSSOP28.. 4% . 84 10 LED . 16ch PCA9955 ATW. 1. 12 . 2. I2C to UART 3. SC16IS750 IPW. I2C SPI UART 5 Mbps 4. 16C450 . 5. SC16IS740/750/760 NXP 1 .. UART I2C SPI 6. 5 Mbps . SC16IS750/760 8 IO SC16IS750 . I2C /SPI . 7. RS-232/RS485 1 UART. I2C SPI 8. SC16IS760 750 SPI IrDA I2C 400kbps FAST . SIR 760 15 Mbps 750 4 Mbps SPI 4 Mbps SC16IS750 . 15 Mbps SC16IS760 . 760 750 SPI 0 . 9. SC16IS740 750 8 740 64 FIFO. 10. 16C450 16C450 .. RS-485 . RTS/CTS .. 11. Xon/Xoff . 12. VDD 13. SC16IS750/760. 14. RESET. TX.

5 SCL. SDA. 16C450. RX. 15. RTS. A0.. A2 2C . CTS 16. RQ. 1k .. 4. 17. VDD GP O[3:0]. VDD. GP O. GP O4/DSR 18. GP O5/DTR. 2C/SP . GP O6/CD 19. GP O7/R . 12-1 SC16IS750 . XTAL1 XTAL2 VSS. 20. 105. 1. 15 . 2. 3. PCA9629 APW. Fm+ 3% 4. 1 2 1 2 . 5. PCA9629A NXP I2C . 4 IC 6. 3%.. 1 2 . 7. 1 2 . GPIO General Purpose Input/Outputs . 8.. INT . 1 255 .. 9.. 10.. ON OFF .. 11. 32 . 1 255 12.. 13.. GPIO . 14.. 15. OUT0 OUT3. PCA9629A .. 16. CPU 4 . 17. 25mA . 25mA .. I/O P0 P3.. 18. 1000pF 100ns P0 P1 . 19. 1 MHz 25mA . 20. 1 2 1 2 I2C 1 MHz FAST . 125. 1. 18 . 2. A D / D A 3. PCF8591T. 4 1 8 SAR A D / D A A D 4. I2C 8 . 5. PCF8591 8 . A D D A IC 4 6. 1 1 A . I2C I2C 100kHz I2C 8 I2C . 7. I2C A D . 8 ADC 8 DAC I2C D A 8. I2C A . D I 2 C .. 9.. VSS VDD 10.. PCF8591 . 8 A D . SO16 DIP16. 11. 12. SCL.

6 SDA. A0. 2C 13.. A1 DAC ADC . PCF8591. A2 . 14. EXT. VDD 15. VSS .. OSC.. 16. A N0.. 17. A N1 .. A N2 . A N3.. / . 18. AOUT.. DAC. VREF 19. AGND. 18-1 PCF8591 . 20. 147. 20 . RTC . PCF2129AT/2. 3ppm 400kHz I2C 3. SPI . PCF2129AT NXP . TCXO Temperature Compensated A VDD . Crystal Xtal . Oscillator SO20. TCXO . I2C SPI .. 20-1 . V DD V BAT .. PCF2129AT I2C SPI IFS .. TCXO TCXO. 3ppm 15 60 . 3ppm .. 28 .. I2C 400kHz FAST .. 3 SPI .. 20-1 . A . POR Power On Reset .. 3 A 220mAh CR2032 . 1 1 73,000 .. 160 20 RTC. PCF2129AT/2. PDF CQ ! IC [ ].