The DS87C530-QNL+ is an EPROM/ROM microcontroller with real-time clock in 52 pin PLCC package. It is an 8051 compatible microcontrollers based on the Dallas Semiconductor high speed core. It uses 4 clocks per instruction cycle instead of the 12 used by the standard 8051. It also provides a unique mix of peripherals not widely available on other processors. It has an on-chip RTC and battery backup support for an on-chip 1K x 8 SRAM. The new Power Management Mode (PMM) allows software to select reduced power operation while still processing. A combination of high-performance microcontroller core, RTC, battery-backed SRAM and power management makes the DS87C530 ideal for instruments and portable applications. It includes two independent serial ports, two data pointers, on-chip power monitor with brownout detection and a watchdog timer. PMM allows software to select a slower CPU clock. While default operation uses four clocks per machine cycle, the PMM runs at 64 or 1024 clocks per cycle.
Supply voltage range is 4.5V to 5.5V
Operating temperature range from -40°C to 85°C
Four 8bit I/O ports and 256bytes scratchpad RAM
16KB EPROM (OTP) and 1KB extra on-chip SRAM for MOVX
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