LPC2148 vs 8051: Microcontroller Comparison

This article compares the LPC2148 and 8051 microcontrollers, highlighting their differences and similarities.

LPC2148 Microcontroller

The LPC2148 is a microcontroller developed by NXP.

Key features of the LPC2148 include:

• Based on a 16-bit/32-bit ARM7TDMI-S CPU.
• Various versions supported: LPC2141, LPC2142, LPC2144, LPC2146, and LPC2148.
• Internal RAM and ROM support, with varying sizes depending on the specific version.
• Six PWM outputs.
• 32-bit timers/counters.
• Low-power RTC with independent power and a 32 kHz clock.
• One or two 10-bit ADCs and one 10-bit DAC.
• Power-saving modes such as IDLE and Power Down.
• Two UARTs, two fast I2C interfaces, and SPI/SSP with buffering and variable data length.

Figure 1: LPC2148 Microcontroller Architecture

Figure 2: LPC2148 Pin Diagram

8051 Microcontroller

The 8051 is a microcontroller originally developed by Intel.

Key features of the 8051 include:

• 8-bit CPU.
• 4 KB ROM for code/program storage.
• 128 bytes of RAM for data/variable storage.
• 32 Input/Output lines with 4 ports (8 lines per port).
• Two timers for introducing delays and setting the baud rate for data communication.
• One serial port with one TxD and one RxD line for serial communication with external devices.
• 6 Interrupt Sources.
• Clock oscillator circuit running at 12MHz frequency.

Figure 3: 8051 Microcontroller Architecture

Figure 4: 8051 Pin Diagram

Difference between LPC2148 and 8051

The following table summarizes the similarities and differences between the LPC2148 and 8051 microcontrollers: