PIC16F1508TESSQTO datasheet(271/384 Pages) MICROCHIP

271 / 384 page

 2011 Microchip Technology Inc.

Preliminary

DS41609A-page 271

PIC16(L)F1508/9

24.0 CONFIGURABLE LOGIC CELL

(CLC)

The Configurable Logic Cell (CLCx) provides program-

mable logic that operates outside the speed limitations

of software execution. The logic cell takes up to 16

input signals and through the use of configurable gates

reduces the 16 inputs to four logic lines that drive one

of eight selectable single-output logic functions.

Input sources are a combination of the following:

• I/O pins

• Internal clocks

• Peripherals

• Register bits

The output can be directed internally to peripherals and

to an output pin.

Refer to Figure 24-1 for a simplified diagram showing

signal flow through the CLCx.

Possible configurations include:

• Combinatorial Logic

-AND

-NAND

- AND-OR

- AND-OR-INVERT

-OR-XOR

-OR-XNOR

• Latches

-S-R

- Clocked D with Set and Reset

- Transparent D with Set and Reset

- Clocked J-K with Reset

FIGURE 24-1:

CLCx SIMPLIFIED BLOCK DIAGRAM

lcxg1

lcxg2

lcxg3

lcxg4

Interrupt

det

Logic

Function

CLCx

LCxOE

lcxq

LCxPOL

LCxOUT

LCxMODE<2:0>

lcx_out

CLCxIN[0]

CLCxIN[1]

CLCxIN[2]

CLCxIN[3]

CLCxIN[4]

CLCxIN[5]

CLCxIN[6]

CLCxIN[7]

CLCxIN[8]

CLCxIN[9]

CLCxIN[10]

CLCxIN[11]

CLCxIN[12]

CLCxIN[13]

CLCxIN[14]

CLCxIN[15]

TRIS Control

Interrupt

det

LCxINTP

LCxINTN

MLCxOUT

LCxEN

CLCxIF

sets

flag

See Figure 24-3

See Figure 24-2

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