EPROM-Based 8-Bit CMOS Microcontrollers

PIC16C621A The PIC16C62X devices are 18 and 20-Pin ROM/ ? EPROM-based members of the versatile PICmicro family of low cost, high performance, CMOS, fully- static, 8-bit Microcontrollers All PICmicro Microcontrollers employ an advanced RISC architecture. The PIC16C62X devices have enhanced core features, eight-level deep stack, and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14-bit wide instruction word with the separate 8-bit wide data. The two-stage instruction pipeline allows all instructions to execute in a single cycle, except for program branches (which require two cycles). A total of 35 instructions (reduced instruction set) are available. Additionally, a large Register set gives some of the architectural innovations used to achieve a very high performance. PIC16C62X Microcontrollers typically achieve a 2:1 code compression and a 4:1 speed improvement over other 8-bit Microcontrollers in their class. The PIC16C620A PIC16C621A and PIC16CR620A have 96 bytes of RAM. The PIC16C622 A) has 128 bytes of RAM. Each device has 13 I/O pins and an 8- bit Timer Counter with an 8-bit programmable prescaler. In addition, the PIC16C62X adds two Analog compara- tors with a programmable on-chip Voltage Reference module. The Comparator module is ideally suited for applications requiring a low cost Analog Interface (e.g., Battery Chargers threshold detectors, white goods controllers, etc). By Microchip Technology Inc.