The DS87C520/DS83C520 is a high-integration 80C52 compatible microcontroller with four 8-bit I/O ports, three 16-bit timers/counters, 256 bytes of on-chip RAM and 16KB of program memory.
The Maxim DS87C520 and DS83C520 are high‑speed EPROM/ROM microcontrollers compatible with the 80C52 architecture. They offer large on‑chip memory, power‑management and EMI‑reduction modes, two full‑duplex hardware serial ports, and 13 interrupt sources (six external).\n\nThis datasheet provides ordering information, detailed pin descriptions for DIP, PLCC, and TQFP packages, performance overviews, special function registers, and package dimensions. It also notes RoHS compliance and references the accompanying High‑Speed Microcontroller User’s Guide.
| Compatibility | 80C52 Compatible |
|---|---|
| Package Types | 40‑pin PDIP, 44‑Pin PLCC, 44‑Pin TQFP, 40‑Pin Windowed CERDIP |
| Interrupt Sources | 13 (six external) |
| Serial Ports | Two Full‑Duplex Hardware Serial Ports |
| RoHS Compliance | Pb‑free/RoHS‑compliant |
They are offered in 40‑pin PDIP, 44‑Pin PLCC, 44‑Pin TQFP, and 40‑Pin Windowed CERDIP packages.
Yes, the device is Pb‑free and RoHS‑compliant.
The guide can be downloaded from www.maxim-ic.com/microcontrolters.