The OB5518 is a master controller IC that integrates high-voltage process and digital-to-analog hybrid technology, with fast single-cycle 8051 core, 8KB MTP, 256B SRAM, MCS-51 instruction setting. The chip integrates analog modules such as DC Regulator, ADC, MOSFET, etc., which can directly drive 10 relays or thyristors, and the chip can operate below 12V of the system power supply.

Features

Command settings are MCS-51 compatible

8KB bytes of on-chip programmable memory in program memory

256 bytes of standard 8052 RAM

Dual 16-bit data pointers (DPTR0&DPTR1)

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

Up to 6 GPIOs

External interrupt source: INTx 1

I2C x 1

UART x 1

Programmable Watchdog Timer (WDT)

3 x 12-bit analog-to-digital (ADC)

On-chip flash memory supports ICP and EEPROM functions

Low Voltage Interrupt LVI/Low Voltage Reset LVR

The power management unit is in idle and power-down mode

Support online simulation (OCD) function

High-speed 1T architecture, up to 8MHz

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

It integrates 10 open-drain ports, 80mA sink capability, and built-in freewheeling diode

Package Type: 20-SOP