PIC14000 datasheet(7/153 Pages) MICROCHIP

7 / 153 page

Preliminary

DS40122B-page 7

PIC14000

3.0

ARCHITECTURAL OVERVIEW

The PIC14000 addresses 4K x 14 program memory. All

program memory is internal. The PIC14000 can directly

or indirectly address its register ﬁles or data memory. All

special function registers including the program counter

are mapped in the data memory. The PIC14000 has an

orthogonal instruction set that makes it possible to

carry out any operation on any register using any

addressing mode. This symmetrical nature and lack of

‘special optimal situations’ make programming with the

PIC14000 simple yet efﬁcient. In addition, the learning

curve is reduced signiﬁcantly.

The PIC14000 contains an 8-bit ALU and working

functions between data in the working register and any

The ALU is capable of addition, subtraction, shift, and

logical

operations.

Unless

otherwise

mentioned,

arithmetic

operations

are

two's

complement.

two-operand instructions, typically one operand is the

working register (W register). The other operand is a

ﬁle register or an immediate constant. In single

operand instructions, the operand is either the

W register or a ﬁle register.

Depending on the instruction executed, the ALU may

affect the values of the Carry (C), Digit Carry (DC), and

Zero (Z) bits in the STATUS register. The C and DC bits

operate as a borrow bit and a digit borrow out bit,

respectively, in subtraction. See the SUBLW and SUBWF

instructions for examples.

A simpliﬁed block diagram for the PIC14000 is shown

in Figure 3-1, its corresponding pin description is

shown in Table 3-1.

This document was created with FrameMaker404

PIC14000 Datasheet(PDF) 7 Page - Microchip Technology

PIC14000 Datasheet(HTML) 7 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL