SH79F3283 is a high-speed and high-efficiency 8051 compatible microcontroller. At the same oscillation frequency, it has the advantage of running faster than the traditional 8051 chip.

The SH79F3283 retains most of the features of the standard 8051 chip. These features include built-in 256 bytes RAM, UART and external interrupts INT0, INT1, INT2 and INT3. In addition, the SH79F3283 also integrates an external 1280-byte RAM, which is compatible with the 16-bit timer/counter (Timer2) of the 8052 chip. The microcontroller also includes a 32K-byte Flash block suitable for program storage.

SH79F3283 not only integrates standard communication modules such as EUART/SPI, but also integrates LCD driver, ADC with built-in comparison function, PWM timer and other modules.

In addition, SH79F3283 has built-in CRC module.

In order to achieve high reliability and low power consumption, SH79F3283 has built-in watchdog timer, low voltage reset function and system clock monitoring function. In addition, SH79F3283 also provides 2 kinds of low power consumption mode

characteristic

■ 8-bit microcontroller based on 8051 instruction pipeline structure

■ Flash ROM: 32K bytes

■ RAM: Internal 256 bytes, external 1280 bytes, LCD RAM 28 bytes

■ EEPROM-like: 1024 bytes

■ Working voltage:

fOSC = 32.768kHz - 16MHz, VDD = 2.0V - 5.5V

■ Oscillator (code option):

- Crystal resonator: 32.768kHz

- Crystal resonator: 2MHz - 16MHz

- Ceramic resonator: 2MHz - 16MHz

- Internal RC oscillator: 12MHz (±2%)/128K

■ 30/42/46 CMOS bidirectional I/O pins

■ 2 optional open-drain I/O ports (32-pin package does not have this IO port)

■ I/O built-in pull-up resistor

■ 4 16-bit timers/counters: T2, T3, T4 and T5

■ A 12-bit PWM timer

■ An 8-bit PWM timer (32-pin package does not have this function)

■ Interrupt source:

- Timer 2, 3, 4, 5

- External interrupt 0, 1, 2, 3 (32 pins without external interrupt 0, 1)

- External interrupt 4: 8 inputs

- ADC, EUART, SCM, LPD

- PWM, SPI (32-pin package without SPI function)

■ 2 enhanced EUARTs (only one UART0 in the 32-pin package)

■ SPI interface (master-slave mode) (32-pin package without SPI function)

■ Built-in buzzer

■ 9-channel 12-bit analog-to-digital converter (ADC) with built-in comparison function

■ LED driver:

- 3-8 X 8 segments (1/3 - 1/8 duty cycle)

■ LCD driver:

- 8 X 24 segments (1/8 duty cycle, 1/4 offset)

- 6 X 26 segments (1/6 duty cycle, 1/4 or 1/3 offset)

- 5 X 27 segments (1/5 duty cycle, 1/3 offset)

- 4 X 28 segments (1/4 duty cycle, 1/3 offset)

■ Built-in low voltage reset function (LVR) (code option)

- LVR voltage 1: 4.1V

- LVR voltage 2: 3.7V

- LVR voltage 1: 2.8V

- LVR voltage 2: 2.1V

■ Built-in CRC check module, check space size is optional

■ Support single-wire emulation and programming

■ CPU machine cycle: 1 oscillation cycle

■ Watchdog Timer (WDT)

■ Warm-up counter

■ Support power saving operation mode:

- idle mode

- Power down mode

■ Flash type

■ Package: TQFP48/LQFP44/LQFP32