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80C51/87C51/80C52/87C52 80C51 8-bit microcontroller family 4 K/8 K OTP/ROM low voltage (2.7 V–5.5 V), low power, high speed (33 MHz), 128/256 B RAM 2000 Aug 07 2 853–0169 24291 DESCRIPTION The Philips 80C51/87C51/80C52/87C52 is a high-performance static 80C51 design fabricated with Philips high-density CMOS
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The Intel MCS-51 (commonly termed 8051) is a single chip microcontroller (MCU) series developed by Intel in 1980 for use in embedded systems. The architect of the Intel MCS-51 instruction set was John H. Wharton. [1] [2] Intel's original versions were popular in the 1980s and early 1990s, and enhanced binary compatible derivatives remain ...
Download Datasheets. High-performance version of the 80C51 8-bit microcontrollers that retains all features of the 80C52 adn adds programmable counter array, 1024 bytes of XRAM, hardware watchdog timer, keyboard interface, versatile serial channel that facilitates multiprocessor communication (EUART), and a speed improvement mechanism (X2 mode).
Phlips Semiconductors. 80C51 Family. 80C51 family hardware description. HARDWARE DESCRIPTION. This chapter provides a detailed description of the 80C51 microcontroller (see Figure 1). Included in this description are: The port drivers and how they function both as ports and, for Ports. 0 and 2, in bus operations. The Timers/Counters.
lower 4k can reside on-chip. Figure 1 shows a map of the 80C51 program memory. The 80C51 can address up to 64k bytes of data memory to the chip. The MOVX instruction is used to access the external data memory. The 80C51 has 128 bytes of on-chip RAM, plus a number of Special Function Registers (SFRs). The lower 128 bytes of RAM can be
The 80C851/83C851 has the same instruction set as the 80C51. The Philips CMOS technology combines the high speed and density characteristics of HMOS with the low power attributes of CMOS. The Philips epitaxial substrate minimizes latch-up sensitivity. FEATURES • 80C51 based architecture – 4k × 8 ROM – 128 × 8 RAM – Two 16-bit counter ...
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The 8051 Instruction Set Atmel 8051 Microcontrollers Hardware Manual 1-2 4316E–8051–01/07 Table 1-1. PSW: Program Status Word Register 1.2 Addressing
