What is the size of the RAM in 8052 microcontroller?
What is the size of the RAM in 8052 microcontroller?
The 8052 was an enhanced version of the original 8051 that featured 256 bytes of internal RAM instead of 128 bytes, 8 KB of ROM instead of 4 KB, and a third 16-bit timer. Most modern 8051-compatible microcontrollers include these features.
Which microcontroller has 256 bytes of RAM?
8051 and 8051 Microcontroller
| Features | 8051 | 8052 |
|---|---|---|
| RAM(bytes) | 128 | 256 |
| ROM | 4K | 8K |
| Timers | 2 | 3 |
| Serial port | 1 | 1 |
What is 128 byte RAM in a microcontroller?
SFR Memory The 8051 provides 128 bytes of memory for Special Function Registers (SFRs). SFRs are bit, byte, or word-sized registers that are used to control timers, counters, serial I/O, port I/O, and peripherals. Refer to Special Function Registers for more information.
How many timers are there in 8052?
8052 Microcontroller 8051 has two timers (Timer0 & Timer1), 8052 also has Timer2. Corresponding to Timer2, there are extra SFRs (Special Function Registers) T2CON, RCAP2H & RCAP2L to configure 16 bit Capture & Auto-reload modes of Timer2.
What is the maximum memory accessed by 8051 microcontroller?
The 8051 has a maximum of only 256 bytes of internal data memory. This memory includes the four register banks, the 16 bytes of bit-addressable memory, the stack, and variable memory. Bank switching uses up to 4 bytes of this internal data memory for every call that switches banks.
What is meant by PSW in 8051?
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.
What is data memory in microcontroller?
The data RAM (Random Access Memory) is the data space that is used for temporarily storing constant and variable values that are used by the microcontroller during normal program execution. The amount of physical RAM space on a given microcontroller varies from one microcontroller to the next.
What is microcontroller explain 8052 features over 8051?
(1) Microcontroller 8051 has 4k bytes of ROM, whereas 8052 has 8k bytes of onboard ROM or EPROM. (2) Microcontroller 8051 has 128 bytes of RAM, whereas 8052 has 256 bytes of onboard RAM. (3) Microcontroller 8051 has a dual 16-bit timer event counter whereas 8052 has an extra 16-bit timer event counter.
What is the difference between the 8051 and 8052 microcontroller?
The 8052 microcontroller is the 8051’s “big brother.” It is a slightly more powerful microcontroller, sporting a number of additional features which the developer may make use of: 256 bytes of Internal RAM (compared to 128 in the standard 8051).
Does the 8051 support external RAM up to 64K?
While Internal RAM is limited to 128 bytes (256 bytes with an 8052), the 8051 supports External RAM up to 64K. Programming Tip: The 8051 may only address 64k of RAM.
What are the 8051 R registers used for?
The 8051 uses 8 “R” registers which are used in many of its instructions. These “R” registers are numbered from 0 through 7 (R0, R1, R2, R3, R4, R5, R6, and R7). These registers are generally used to assist in manipulating values and moving data from one memory location to another.
Where should the timer 2 interrupt routine be placed in memory?
The Timer 2 Interrupt routine must be placed at 002Bh in code memory. NOTE: Like the Serial Interrupt, Timer 2 interrupt does not clear the interrupt flag that triggered the interrupt.