A/D Type MCU

HT46 A/D Type MCU Series

Features of A/D Type HT46 Series • 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).

• -40 o C~85 o C Operating temperature.(Industrial grade)

Peripheral Feature • I/O with pull high function.

• Port A with wake up function.

• Timer function • Watch dog function • Halt and wakeup for low power consumption.

• I 2 C 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.

Block Diagram

Program Memory Map

Special Purpose Data Memory

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.

PWM • PWM is Pulse Width Modulator. • There are two modes configuration.

6+2 or 7+1 selected by • 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

PWM 6+2 Mode

PWM 7+1 Mode

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.

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

A/D Convert Control Register

A/D Convert Clock Source Register

A/D Convert Timing Diagram

I 2 C Bus Interface • I 2 C bus is a bidirectional 2-wire serial interface.

– SCL : serial clock pin.

– SDA : serial data pin.

• I 2 C output is of open drain . An external pull high resistor is needed.

• HT46 series I 2 C bus is only operates in Slave mode. For Master mode, user can implement by software.

I 2 C Registers • I 2 C Slave Address Register - HADR • I 2 C Input/Output Data Register – HDR • I 2 C Control Register – HCR.

• I 2 C Status Register – HRS.

• Using HT46 serial I bus can work.

2 C Slave function, user can only need to set some flags and polling some status flags. Then, I2C

Configuration Options

A/D Type MCU

Transcript A/D Type MCU

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