DS83C520

EPROM/ROM高速微控制器

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产品详情

80C52 Compatible
- 8051 Pin- and Instruction-Set Compatible
- Four 8-Bit I/O Ports
- Three 16-Bit Timer/Counters
- 256 Bytes Scratchpad RAM
Large On-Chip Memory
- 16kB Program Memory
- 1kB Extra On-Chip SRAM for MOVX
ROMSIZE Feature
- 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
High-Speed Architecture
- 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
Power Management Mode
- Programmable Clock Source to Save Power
- CPU Runs from (crystal/64) or (crystal/1024)
- Provides Automatic Hardware and Software Exit
EMI Reduction Mode Disables ALE
Two Full-Duplex Hardware Serial Ports
High Integration Controller Includes:
- Power-Fail Reset
- Early-Warning Power-Fail Interrupt
- Programmable Watchdog Timer
13 Interrupt Sources with Six External
Available in 40-pin PDIP, 44-Pin PLCC, 44-Pin TQFP, and 40-Pin Windowed CERDIP
Factory Mask DS83C520 or EPROM (OTP) DS87C520

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