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GENERAL DESCRIPTION

The  PIC16C62X  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 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.

A highly reliable Watchdog Timer with its own on-chip RC oscillator provides protection against software lock- up.

A UV-erasable CERDIP-packaged version is ideal for code development while the cost-effective One-Time Programmable (OTP) version is suitable for production in any volume.

Table 1-1 shows the features of the PIC16C62X mid-range microcontroller families.

A simplified block diagram of the PIC16C62X is shown in Figure 3-1.

The PIC16C62X series fit perfectly in applications ranging from battery chargers to low-power remote sensors. The EPROM technology makes customization of application programs (detection levels, pulse generation, timers, etc.) extremely fast and convenient. The small footprint packages make this microcontroller series perfect for all applications with space limitations.

Low-cost, low-power, high-performance, ease of use and I/O flexibility make the PIC16C62X very versatile. 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 comparators 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).

Those users familiar with the PIC16C5X family of microcontrollers will realize that this is an enhance version of the PIC16C5X architecture. Please refer to Appendix A for a detailed list of enhancements. Code written for the PIC16C5X can be easily ported to PIC16C62X family of devices (Appendix B).

The PIC16C62X devices have special features to reduce external components, thus reducing system cost, PIC16C62X family fills the niche for users wanting to migrate up from the PIC16C5X family and not needing various peripheral features of other members of the PIC16XX mid-range microcontroller unlock.