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HT46 A/D Type MCU Series

HT46 A/D Type MCU Series. HT46R25* (OTP) HT46C25* (Mask). 16Kx16. HT46R24 (OTP) HT46C24 (Mask). 8Kx16. Program Memory. HT46R23 (OTP) HT46C23 (Mask). 4Kx15. HT46R22 (OTP) HT46C22 (Mask). 2Kx14. * Under development, available in 4Q, 2004. 576. 64. 192. 384.

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HT46 A/D Type MCU Series

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  1. HT46 A/D Type MCU Series HT46R25* (OTP) HT46C25* (Mask) 16Kx16 HT46R24 (OTP) HT46C24 (Mask) 8Kx16 Program Memory HT46R23 (OTP) HT46C23 (Mask) 4Kx15 HT46R22 (OTP) HT46C22 (Mask) 2Kx14 * Under development, available in 4Q, 2004 576 64 192 384 Data Memory (Byte)

  2. HT46 A/D Type MCU Series

  3. RISC Architecture Direct and Indirect Addressing mode. Total 63 instructions. Table read function. Maximum 16 stack ( by product) Operating Voltage: Fsys = 4Mhz, 2.2~5.5v Fsys = 8Mhz, 3.3~5.5v Idd : 2mA (tpy.) (5V, 4MHz, Xtal, ADC disable) Istb : 1uA (max.) (WDT, RTC disabled). -40oC~85oC Operating temperature.(Industrial grade) Features of A/D Type HT46 Series

  4. I/O with pull high function. Port A with wake up function. Timer function Watch dog function Halt and wakeup for low power consumption. I2C interface PFD driver output. On-chip crystal and RC oscillator LVR for Brown-out protection. Multi-channel 9 or 10-bit A/D converter Pulse Width Modulator output. Peripheral Feature

  5. Block Diagram

  6. Program Memory Map

  7. Special Purpose Data Memory

  8. General Purpose Data Memory • 2 banks of Data memory in HT46X24 • Each one has 192x8 bytes (total 384 bytes). • Need to use BP(bank pointer in special RAM) to select Bank0 or Bank1 data memory. • BP=0 Access Bank0 data. • BP=1 Access Bank1 data. • Only use MP1 by Indirect Addressing mode to access.

  9. PWM • PWM is Pulse Width Modulator. • There are two modes 6+2 or 7+1 selected by configuration. • User can change the frequency duty software • by writing data to PWM0~PWM3 special data register. • PWM function can be controlled On/Off by software. • Enable PWM output : SET PD0 • Disable PWM output : CLR PD0

  10. PWM 6+2 Mode

  11. PWM 7+1 Mode

  12. Analog to Digital Converter • The HT46 series have a 9 or 10-bit ADC. • ADC can be disabled by software. • Max. 4 or 8 channels can input to the ADC. • Channels set in ADCR by software • ADC channels are pin-shared with Port B. • As ADC input or Port B set in ADCR by software • Input range is from 0 to VDD. • Min. ADC clock period is 1us. • ADC sampling time is 32 ADC clocks. • ADC convert time is 76 ADC clocks. • Max. INL ± 1 LSB.

  13. ADC Convert Data Register • ADRL/ADRH are two registers to store the ADC convert data.

  14. A/D Convert Control Register

  15. A/D Convert Clock Source Register

  16. A/D Convert Timing Diagram

  17. I2C Bus Interface • I2C bus is a bidirectional 2-wire serial interface. • SCL : serial clock pin. • SDA : serial data pin. • I2C output is of open drain . An external pull high resistor is needed. • HT46 series I2C bus is only operates in Slave mode. For Master mode, user can implement by software.

  18. I2C Registers • I2C Slave Address Register - HADR • I2C Input/Output Data Register – HDR • I2C Control Register –HCR. • I2C Status Register – HRS. • Using HT46 serial I2C Slave function, user can only need to set some flags and polling some status flags. Then, I2C bus can work.

  19. Configuration Options

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