- Place of Origin: United States
- Model Number: AT89C51-24PU
- Part number: AT89C51-24PU
- Package: P40
- Lead Time: In stock
- Shipping Way: DHL, FEDEX,EMS,Post office and so on
- Warranty: 90 days after shipping
- Datesheet: Pls contact us
- Payment Ways:
TT,Paypal,Western Union, Credit card,alipay and so on
- Datacode: New Year
- Temperature: Standing degree
- Voltage: Standing Voltage
Get AT89C51-24PU now.
|Place of Origin||United States|
|Lead Time||In stock|
|Shipping Way||DHL, FEDEX,EMS,Post office and so on|
|Warranty||90 days after shipping|
|Datesheet||Pls contact us|
|Payment Ways||TT,Paypal,Western Union, Credit card,alipay and so on|
MCS-51 devices have a separate address space for Program and Data Memory. Up to 64K bytes each of external Program and Data Memory can be addressed.
If the EA pin is connected to GND, all program fetches are directed to external memory. On the AT89S51, if EA is connected to VCC, program fetches to addresses 0000H through FFFH
are directed to internal memory and fetches to addresses 1000H through FFFFH are directed to external memory.
The AT89S51 implements 128 bytes of on-chip RAM. The 128 bytes are accessible via direct and indirect addressing modes. Stack operations are examples of indirect addressing, so the 128 bytes of data RAM are available as stack space
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