Sinowealth SH79F0819M

SH79F0819 is a high-speed and high-efficiency 8051 compatible microcontroller. At the same oscillation frequency, it has the superior characteristic of faster operation compared to traditional 8051 chips. SH79F0819 retains most of the characteristics of the standard 8051 chip, including built-in 256 bytes of RAM, 1 UART, and external interrupts INT2 and INT3. In addition, SH79F0819 also integrates an external 256 bytes of RAM and 4 16-bit timers/counters (Timer2 - Timer5). The microcontroller also includes an 8K byte Flash block suitable for programs and data.

SH79F0819 not only integrates standard communication modules such as EUART, but also integrates an LCD driver, an ADC with built-in comparison function, a PWM timer and other modules.

To achieve high reliability and low power consumption, SH79F0819 has a built-in watchdog timer, low voltage reset function and system clock monitoring function. In addition, SH79F0819 also provides two low-power power-saving modes.

• Based on the 8-bit microcontroller with 8051 instruction pipeline structure
• Flash ROM: 8K bytes
• EEPROM-like: 1K bytes
• RAM: 256 bytes internal, 256 bytes external, 19 bytes LCD RAM
• Operating voltage: fOSC = 32.768kHz - 12.3MHz, VDD = 2.0V - 5.5V
• Oscillator (code option):
  • Crystal resonator: 32.768kHz
  • Crystal resonator: 2MHz - 12.3MHz
  • Ceramic resonator: 2MHz - 12.3MHz
  • Internal RC oscillator: 12.3MHz (±2%)/128K
• 26 CMOS bidirectional I/O pins
• Built-in pull-up resistors on I/O
• 4 16-bit timers: T2, T3, T4 and T5
• One 12-bit PWM timer
• Interrupt sources:
  • Timers 2, 3, 4, 5
  • External interrupts 2, 3
  • External interrupt 4: 4 inputs
  • ADC, EUART, SCM, LPD
  • PWM
• EUART0
• 6-channel 10-bit analog-to-digital converter (ADC) with built-in comparison function
• LED driver:
  • 4 X 8 segments (1/4 duty cycle)
• LCD driver:
  • 4 X 12 segments (1/4 duty cycle, 1/3 bias)
• Built-in low voltage reset function (LVR) (code option):
  • LVR voltage 1: 4.3V
  • LVR voltage 2: 2.1V
• CPU machine cycle: 1 oscillation cycle
• Watchdog timer (WDT)
• Preheat counter
• Support for power-saving operation modes:
  • Idle mode
  • Power-down mode
• Flash type
• Package: SOP28/TSSOP28

• 4 × 8-segment (1/4 duty cycle) LCD driver
• 4 × 12-segment (1/4 duty cycle, 1/3 bias) LCD driver
• EUART0
• 6-channel 10-bit ADC with built-in comparator function
• One 12-bit PWM timer
• Four 16-bit timers: T2, T3, T4, and T5
• 26 CMOS bidirectional I/O pins
• Built-in pull-up resistors
• Power-saving operating modes: - Idle mode - Power-down mode
• Watchdog timer (WDT)
• Warm-up counter
• Low voltage reset (LVR)