What is 89c51 microcontroller?
The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash programmable and erasable read only memory (PEROM). The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout.
What required voltage for 89c51 is?
| AT89C51 – Detailed Features | |
|---|---|
| CPU | 8-bit 8051 family |
| Maximum Operating Temperature (*C) | 125 |
| Minimum Operating Voltage (V) | 4 |
| Maximum Operating Voltage (V) | 5.5 |
What is the difference between 8051 and 89c51?
Actually 8051 is an architecture developed by Intel. And the controllers at89c51 & at89c52 are designed by atmel Corp based on Intel 8051 architecture. The basic difference between these two controllers is in their RAM memory and flash memory.
How many ports are available in AT89C51?
Microcontroller 89c51 consists of 40 pins. There are four ports which are designed as P0, P1, P2 andP3.
Which register is used for serial programming in 89c51?
For serial communication AT89C51 has registers SBUF and SCON (Serial control register).
What are the features of 8051?
Features of 8051 Microcontroller
- 4KB bytes on-chip program memory (ROM)
- 128 bytes on-chip data memory (RAM)
- Four register banks.
- 128 user defined software flags.
- 8-bit bidirectional data bus.
- 16-bit unidirectional address bus.
- 32 general purpose registers each of 8-bit.
- 16 bit Timers (usually 2, but may have more or less)
What is PIC microcontroller used for?
PIC (Programmable Interface Controllers) microcontrollers are the worlds smallest microcontrollers that can be programmed to carry out a huge range of tasks. These microcontrollers are found in many electronic devices such as phones, computer control systems, alarm systems, embedded systems, etc.
What is the number used by 89c51 in embedded C for external hardware interrupt 0?
In AT89C51, there are only two timers, so ET2 is not used. EX0 and EX1 are used to enable the external interrupts 0 and 1. ES is used for serial interrupt.
What is difference between 89c51 and 89s51?
difference between at89c51 and at89s51 in the data sheet i got the pins status are the same but the flash memory of both mcu is in system programmable but the 89s51 only have pins allocated for in system programming.
What is the difference between AT89C51 and at89s51?
The only difference between the the 89c51 and 89s51 is that the 89s51 and all S series chips can be programmed through both the ISP port and parallel port. But the 89c51 can be programmed only through parallel programmer. It can used in manufacturing of Remote controller device.
Which port is used for serial communication in 89c51 controller?
In serial communication the data is sent as one bit at a time. This article describes the interfacing of 8051 microcontroller (AT89C51) with a computer via serial port, RS232. Serial communication is commonly used in applications such as industrial automation systems, scientific analysis and certain consumer products.
What is PSW in microcontroller?
The Program Status Word (PSW) contains status bits that reflect the current CPU state. The 8051 variants provide one special function register called PSW with this status information.