ATC35 데이터 시트보기 (PDF) - Atmel Corporation

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ATC35

Cell-based ASIC

Atmel Corporation 

ATC35 Summary

Oscillator Cell

Library Osclib

Crystal Oscillators and

Power on Reset

Phase Locked Loops

The Atmel CBIC oscillator library provides stable clock sources. This library makes the

following cells available:

The Atmel two-pad oscillators are designed with the Pierce three-point oscillator struc-

ture. For operation with most standard crystals, no external capacitors are needed. It

may be necessary to add external capacitors on xin and xout to ground in special cases.

Clock output is low at off state (onosc = 0).

The oscillators provide a test mode (test = 1 and onosc = 1), clock = not (xin).

The Atmel Power-on-reset cell is dedicated to reset the internal circuit at power up and

when the battery falls low.

Table 14 gives available oscillator and POR cells.

Table 14. Oscillator and POR Cells

Cell Name

Description

osc33k

Low-power, optimized for 32.786 kHz crystal

osc16m

16 MHz crystal oscillator

osc27m

27 MHz crystal oscillator

GNDYPOR

Ground pad for periphery with power on reset. Static and

dynamic reset with internal hysteresis.

The Atmel PLLs are systems designed for synchronizing an internal chip clock with an

input reference clock or multiplicating an input reference clock. Table 15 gives available

phase locked loop cells.

Table 15. Phase Locked Loop Cells

Cell Name

Description

pll020m1

5 - 20 MHz single-pad phase locked loop

pll080m1

20 - 80 MHz single-pad phase locked loop

pll220m1

80 - 220 MHz single-pad phase locked loop

Basic Analog Cell

Library AnaLib

The Atmel CBIC Analog Library makes the following parts available:

• Multiplexer modules

– Multiplexers to minimize cross-talk (for use with high-impedance nodes).

– Multiplexers to minimize ON resistance.

• Analog input and output cells

• Analog power and ground cells

General-purpose

Analog Library GPlib

The General-purpose Analog Cell Library is composed of cells performing various ana-

log functions.

Currently available are regulators, power management cells, op amps, comparators,

low-speed ADCs and DACs.

7

1063CS–CBIC–01/03

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