OB5516 is a master control chip that integrates high-voltage process and digital-to-analog hybrid technology, which is used in soymilk machine products. The OB5516 features a fast single-cycle 8051 core, 32KB Flash, 1KB+256B SRAM, and can execute all ASM51-compliant instructions with the same instruction settings as the MCS-51. The chip integrates analog modules such as DC Regulator, ADC, MOSFET, touch button, zero-crossing detection line, etc., which can directly drive 5 relays or thyristors, and the chip can operate below 12V of the system power supply.

Features

Command settings are compatible with MCS-51

32K bytes of on-chip flash program memory

256 bytes of standard 8052 RAM

1K bytes of SRAM

Dual 16-bit data pointer (DPTR0&DPTR1)

4 x 16-bit timers/counters (timers 0, 1, 2, 3)

Integrated 8-way touch buttons

Up to 23 GPIOs

LED driver: 7 high-current COM ports, 16 SEG ports

External interrupt source: INTx 2

External interrupt source: KBIx8 (with debounce function)

I2C x 1

UART x 2

Programmable Watchdog Timer (WDT)

8 channels 12-bit analog-to-digital conversion (ADC)

On-chip flash memory supports ICP and EEPROM functions

Low Voltage Interrupt LVI (3.2/4.0V) / Low Voltage Reset LVR (2.7V)

Idle and power-down modes of power management unit

Support online simulation (OCD) function

On-chip oscillator:

HIRC: 22.1184MHz, (±2%, -40°C~85°C)

LIRC: 20KHz, ±20%

High voltage simulation unit

Input voltage: 7.5V~12V

Integrated 5VLDO, output voltage: 5V ±2%@25°C. ±4%@ -40°C~85°C; Maximum output current: 200mA

Integrated 5 open-drain ports, 80mA current sink capability, built-in freewheeling diode

Integration of an op amp (OPA)

Integrated Two-Way Zero-Crossing Detection (ZD)

Package type: 20/28-SOP, 32-LQFP