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AN910 Datasheet(PDF) 3 Page - STMicroelectronics |
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AN910 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 51 page 3/51 ST7 AND ST9 PERFORMANCE BENCHMARKING 2 OVERVIEW OF THE MCU CORES The set of MCUs evaluated is composed of various 8-bit, 8/16-bit, and 16-bit microcontrollers with accumulator, register file or mixed architectures. Table 2 is an overview of the MCU cores. Table 2. MCU cores overview A description of the MCU work environments is available in section 5. MCU name Architecture Short core description Freq1) 1) As the goal is to obtain the best of each MCU core, the maximum internal frequency (Freq) available, for each MCU, on development board has been used (unless other specified). Note that results are directly proportional to this frequency. 80C51XA PHILIPS 16-bit; register file eXtended Architecture (XA) of 80C51’s - upward compatible 8/16-bit register bus - 16-bit data/program memory buses register file programming model with sixteen 16-bit banked registers 20 MHz 68HC16 MOTOROLA 16-bit; two accumulators core architecture superset of 68HC11’s - upward compatible accumulator programming model with two 16-bit accumulators, and three 16-bit index registers (all with 4-bit extensions) 16 MHz 68HC12 MOTOROLA 16-bit; two accumulators instruction set is superset of 68HC11’s - upward compatible programming model identical to 68HC11’s 8 MHz ST9+ STMicroelectronics 8/16-bit; register file evolution of the ST9 enhanced clock speed, instruction cycle time enlarged memory space 25 MHz ST9 STMicroelectronics 8/16-bit; register file 8/16-bit architecture; 8-bit register bus - 16-bit memory bus register file programming model with 14 groups of sixteen 8-bit registers, useable as 16-bit registers modular paged registers for access to peripheral registers 12 MHz H8/300 HITACHI 8/16-bit; register file RISC-like architecture and instruction set register file programming model with sixteen 8-bit registers 10 MHz 68HC11 MOTOROLA 8-bit; two accumulators market standard 8-bit MCU accumulator programming model with two 8-bit accumulators or one 16-bit accumulator, and two 16-bit index registers 4 MHz 68HC08 MOTOROLA 8-bit; accumulator superset of the 68HC05 - upward compatible enhanced performance and instruction set accumulator programming model with one 8-bit accumulator, and one 16-bit index register 8 MHz ST7 STMicroelectronics 8-bit; accumulator upward compatible with the 68HC05 accumulator programming model with one 8-bit accumulator, and two 8-bit index registers 4 MHz 8 MHz 80C51 INTEL, PHILIPS... 8-bit; register file and accumulator mixed accumulator and register file programming model with four banks of eight 8-bit registers (include accumulator), and a 16-bit data pointer 20 MHz KS88 SAMSUNG 8-bit; register file core architecture superset of SUPER8’s; 8-bit register bus register file programming model with 192 8-bit prime data registers, and two register sets with system/peripheral/data registers 8 MHz 78K0 NEC 8-bit; register file and accumulator mixed accumulator and register file programming model with four banks of eight 8-bit or four 16-bit registers (include accumulator) 10 MHz |
Similar Part No. - AN910 |
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Similar Description - AN910 |
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