ATC18 查看數據表（PDF） - Atmel Corporation

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ATC18

Cell-based ASIC

Atmel Corporation 

ATC18 Summary

2. Standard Cell Library SClib

The Atmel Standard Cell Library, SClib, contains a comprehensive set of combinational logic

and storage cells. The SClib library includes cells which belong to the following categories:

• Buffers and Gates

• Multiplexers

• Flip-flops

• Scan Flip-flops

• Latches

• Adders and Subtractors

2.1 Decoding the Cell Name

Table 2-1 shows the naming conventions for the cells in the SClib library. Each cell name begins

with either a two-, three-, or four-letter code that defines the type of cell. This indicates the range

of standard cells available.

Table 2-1. Cell Codes

Code Description

AD Adder

AH Half Adder

AS Adder/Subtractor

AN AND Gate

AOI AND-OR-Invert Gate

AON AND-OR-AND-Invert Gates

AOR AND-OR Gate

BH Bus Holder

BUFB Balanced Buffer

BUFF Non-Inverting Buffer

BUFT Non-Inverting 3-State Buffer

CG Carry Generator

CLK2 Clock Buffer

DE D-Enabled Flip-Flop

DF D Flip-Flop

INV0 Inverter

Code

INVB

INVT

LA

MI

MX

ND

NR

OAI

OAN

OR

ORA

SD

SE

SU

XN

XR

Description

Balanced Inverter

Inverting 3-State Buffer

D Latch

Inverting Multiplexer

Multiplexer

NAND Gate

NOR Gate

OR-AND-Invert Gate

OR-AND-OR-Invert Gates

OR Gate

OR-AND Gate

Multiplexed Scan D Flip-Flop

Multiplexed Scan Enable D Flip-Flop

Subtractor

Exclusive NOR Gate

Exclusive OR Gate

3

1389CS–CASIC–06-Nov-06

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