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[3] [49] It can perform as an 8-bit 8051, has 24-bit linear addressing, an 8-bit ALU, 8-bit instructions, 16-bit instructions, a limited set of 32-bit instructions, 16 8-bit registers, 16 16-bit registers (8 16-bit registers which do not share space with any 8-bit registers, and 8 16-bit registers which contain 2 8-bit registers per 16-bit ...
The 8-bit f field determines the address in combination with the a bit and the 4-bit bank select register (BSR). If a =0, the BSR is ignored and the f field is sign-extended to the range 0x000–0x07F (global RAM) or 0xF80–0xFFF (special function registers).
the addition of another FSR register (bringing the number up to 3) The RAM space is 12 bits, addressed using a 4-bit bank select register (BSR) and an 8-bit offset in each instruction. An additional "access" bit in each instruction selects between bank 0 (a=0) and the bank selected by the BSR (a=1).
Also, different status registers are mapped into the SFR, for use in checking the status of the 8051, and changing some operational parameters of the 8051. Some SFR bits may be set directly using SETB/LDB instructions on the SFR's address, whereas others may require usage of specific instructions.
An AT89c2051 microcontroller in circuit. The Atmel AT89 series is an Intel 8051-compatible family of 8 bit microcontrollers (μCs) manufactured by the Atmel Corporation.. Based on the Intel 8051 core, the AT89 series remains very popular as general purpose microcontrollers, due to their industry standard instruction set, their low unit cost, and the availability of these chips in DIL (DIP ...
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8-bit (8-bit data bus) PICmicro, with a single accumulator (8 bits): PIC10 and PIC12: 12-bit instruction words; PIC16 series: 14-bit instruction words, one address pointer ("indirect register pair") PIC16F628 (Replacement for very popular but discontinued PIC16F84) – PIC16F84A is still in production as of April 8, 2022. [6]
Oversupply would rise to 1.4 million barrels per day in 2025 if OPEC+ follows through on plans to unwind quotas in April, the IEA said. ... Bank of America expects Brent crude to average $61 per ...