Sinowealth SH79F1612AX/020XU

The SH79F1612A is a high-speed, high-efficiency 8051-compatible microcontroller. Operating at the same oscillation frequency, it offers superior performance with faster execution speed compared to traditional 8051 devices.

The SH79F1612A retains most features of the standard 8051, including built-in 256-byte RAM, two 16-bit timers/counters, two UARTs, and external interrupts INT0, INT1, and INT2. In addition, the SH79F1612A integrates 768 bytes of external RAM and an 8052-compatible 16-bit timer/counter (Timer2). The device also includes a 16K-byte Flash block for both program and data storage.

The SH79F1612A integrates not only an EUART standard communication module, but also an ADC with built-in compare function, PWM timer, and other peripheral modules.

To achieve high reliability and low power consumption, the SH79F1612A incorporates a watchdog timer, low-voltage reset, and low-voltage detection functions. Additionally, the SH79F1612A provides two low-power saving modes.

• 8-bit MCU based on 8051-compatible pipelined instruction set
• Flash ROM: 16K bytes
• RAM: 256 bytes internal, 768 bytes external
• On-chip 512-byte EEPROM-like storage
• Operating voltage: fOSC = 30kHz - 16.6MHz, VDD = 2.8V - 5.5V
• Oscillator (code option):
  • Crystal resonator: 32.768kHz
  • Crystal resonator: 400kHz - 16.6MHz, or ceramic resonator: 2MHz - 16.6MHz
  • Ceramic resonator: 400kHz - 2MHz
  • Internal oscillator: 16.6MHz (±2%)
  • External clock source: 30kHz - 16.6MHz
• 18 CMOS bidirectional I/O pins (four port modes)
• 7 high-current drive ports
• 3 × 16-bit timer/counters T0, T1, T2
• Interrupt sources:
  • Timer 0, 1, 2
  • External interrupt 0, 1, 2
  • ADC, EUART, SCM, PWM, LPD, EUART1
• 1 × 8-bit PWM timer
• 2 × EUARTs
• Built-in low-voltage detection (LPD)
• 8-channel 10-bit ADC with built-in comparator function
• Built-in low-voltage reset (LVR) (code option):
  • LVR voltage 1: 4.1V
  • LVR voltage 2: 3.7V
  • LVR voltage 3: 2.8V
• CPU machine cycle: 1 oscillator cycle
• Watchdog timer (WDT)
• Warm-up counter
• Oscillator failure detection (SCM)
• Power-saving operating modes:
  • IDLE mode
  • Power-down mode
• Low power consumption
• Flash type
• Package: SOP/TSSOP 20 Pin
• CPU core registers: ACC, B, PSW, SP, DPL, DPH
• Extended 'MUL' and 'DIV' instructions: 16-bit × 8-bit, 16-bit / 8-bit
• Dual data pointer enhanced CPU core registers: AUXC, DPL1, DPH1, INSCON
• SH79F1612A provides 256 bytes internal RAM and 768 bytes external RAM for data storage
• Flash memory comprises 16 × 1KB sectors, totaling 16KB; program and erase operations supported across the full operating voltage range
• In-Circuit Programming (ICP) supports write, read, and erase operations
• Supports full-chip/sector erase and programming
• Program/erase endurance: minimum 100,000 cycles
• Data retention: minimum 10 years
• Low power consumption