Description

OB39R32T1 has a fast single-cycle 8051 core, 32KB+8KB flash memory, 256B+768B SRAM, and can execute all ASM51-compliant instructions, with the same instruction settings as the MCS-51. The on-chip integrates DC Regulator, ADC, and touch buttons.

Features

Command settings are compatible with MCS-51

32K+8K bytes of on-chip flash program memory

256 bytes of standard 8052 RAM

768 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 29 GPIOs

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

External interrupt source: INTx 4

External interrupt source: KBIx8 (with debounce function)

I2C x 2

UART x 2

Programmable Watchdog Timer (WDT)

9-channel 12-bit analog-to-digital conversion (ADC)

On-chip flash memory supports ICP and EEPROM functions

Low Voltage Interrupt LVI (1.65/2.6/3.2/4.0V) / Low Voltage Reset LVR (1.55/2.7V)

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)

Package type: 20/24/28-SOP, 32-LQFP