Question
Download Solution PDFWhat is the size of internal data memory in an 8051 microcontroller?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- 8051 is an 8-bit microcontroller built with 40 pins DIP (dual inline package).
- 8051 has internal RAM (128 Bytes) and ROM (4K Bytes).
- Of the 128-byte internal RAM, only 16 bytes are bit-addressable. The rest must be accessed in byte format.
- Internal RAM (data memory) - 128 bytes
- Internal memory (code memory) - 4 kB (ROM)
- Timer/counter - 2
- No. of interrupt - 5
- I/O pins - 32
- Serial port - 1
Notes:
The Block Diagram of an 8051 microcontroller is as shown:
In an 8051 microcontroller,
Last updated on Jun 2, 2025
-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.
-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.
->The candidates must have passed 10th with ITI or Diploma to be eligible for this post.
->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.
-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways.
-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.
-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here