SS805X

Overview

SS805X is a special MCU developed by SinhMicro for E-cigarettes that integrates MIC detection, heating coil resistance detection, and short-circuit protection.

Features

• ​​​​​​Enhanced 8-bit microcontroller compatible with the 8051 instruction set
  • Maximum frequency 12 MHz
  • Single clock instruction cycle，the performance is 8 times of the native 8051
• Memories：8KB Code MTP，256B Data RAM
• Operating voltage: 2.7V~5.5V
• Support one or multiple power supplies from VIN and BAT
• 2* LDOs (VINLDO and BATLDO) with adjustable output
• Integrated VDD low power, system over-temperature protection
• Ultra-low power dissipation
  • 4 operating modes: Normal, Low-speed, IDLE, and SLEEP      
  • Power dissipation in SLEEP mode: 2μA   
  • Wake up the system by comparing IO input with specific levels
• 1* adjustable NTC
• 12-bit and 4-channel ADC
  • 3 external inputs and 1 internal input
  • All external inputs support programmable gains, which can be used for current and micro-voltage measurement
• 2* RC oscillators
  • Low-frequency LORC, 32KHz
  • High-frequency HIRC, 12MHz
• 1* SysTick, providing timing reference for the program
• 1* AlwaysTimer, can wake up the system from SLEEP mode
• 1* WatchDog Timer, can be used to reset when the system times out
• 3* 16-bit timers  
  • Timer 0 can be used to generate PWM0 and enable Charger
  • Timer 1 can be used to generate PWM1 and enable ACMP and Charger
  • Timer 2 can generate 5 PWMs with the same frequency and different duty cycles at the same time and can be uesd to enable Charger
• Integrated linear charger management unit with maximum 1A charge current 
  • Support 3.2V~5.5V wide voltage input, charge voltage and charge current can be finely adjusted 
  • Supports undervoltage and over-temperature protection
• 1* analog comparator 
  • ACMP can be enabled or disabled by Timer1
  • ACMP trigger can control IO output break
• Built-in e-cigarette MIC detection module
  • The maximum sampling range supports a 100pF capacitor
  • Support MIC capacitance increasing or decreasing wakeup, can meet the inhalation or blow wakeup
  • Support detection of most e-cigarette airflow sensors
  • Negative pressure triggering thresholds can be flexibly configured
  • High-resolution sampling configuration, which meets the application requirements of adjusting the power according to the negative pressure
  • Conversion rates up to 50Hz of negative pressure detection
• Integrated E-cigarette heating coil resistance detection
• 13* bidirectional I/O ports
  • 13 ports can be configured as pull-push mode or open-drain mode
  • 13  I/Os can prevent the current backflow
  • P12 supports large current drive capability
  • Several I/Os can be controlled to output a specific protection level when the comparators are triggered
  • The digital and analog functions of the pins can be present at the same time (for example, when the pin is high level as a GPIO output, ADC can be turned on to measure the actual voltage of the pin)
• 1* UART, supports half-duplex communication on a single pin
• Integrated 1-wire and 2-wire debugging / programming interface
• Package: QFN16

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