Dallas > DallasDS87C530

Dallas > DallasDS87C530_2

Modified: May 15, 2005, 9:07 pm

Manufacturer:	Dallas-Maxim
Model:	DS87C530 QCL
Speed:	33MHz
Type:	MCS-51
Data Code:	0251
Introduced:	1980
Transistors:	??
Package:	52 PLCC
Process:	??
Architecture:	8 bit MCU
Used in:	Control applications
Description:	The DS87C530/DS83C530 EPROM/ROM microcontrollers with a real-time clock (RTC) are 8051-compatible microcontrollers based on the Dallas high-speed core. They use 4 clocks per instruction cycle instead of the 12 used by the standard 8051. They also provide a unique mix of peripherals not widely available on other processors. They include an on-chip RTC and battery backup support for an on-chip 1k x 8 SRAM. The new Power Management Mode 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/DS83C530 ideal for instruments and portable applications. They also provide several peripherals found on other Dallas high-speed microcontrollers. These include two independent serial ports, two data pointers, on- chip power monitor with brownout detection and a watchdog timer. Power Management Mode (PMM) allows software to select a slower CPU clock. While default operation uses four clocks per machine cycle, the PMM runs the processor at 64 or 1024 clocks per cycle. There is a corresponding drop in power consumption when the processor slows.