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TI德州仪器 DS87C520 产品介绍
2026-04-14
0次
说明
- 80C52 Compatible
- 8051 Pin- and Instruction-Set Compatible
- Four 8-Bit I/O Ports
- Three 16-Bit Timer/Counters
- 256 Bytes Scratchpad RAM
- 16kB Program Memory
- 1kB Extra On-Chip SRAM for MOVX
- Selects Internal ROM Size from 0 to 16kB
- Allows Access to Entire External Memory Map
- Dynamically Adjustable by Software
- Useful as Boot Block for External Flash
- 4 Clocks/Machine Cycle (8051 = 12)
- Runs DC to 33MHz Clock Rates
- Single-Cycle Instruction in 121ns
- Dual Data Pointer
- Optional Variable Length MOVX to Access Fast/Slow RAM/Peripherals
- Programmable Clock Source to Save Power
- CPU Runs from (crystal/64) or (crystal/1024)
- Provides Automatic Hardware and Software Exit
- Power-Fail Reset
- Early-Warning Power-Fail Interrupt
- Programmable Watchdog Timer
