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ATC20 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 ATC20
기능 Cell-based ASIC
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ATC20 데이터시트, 핀배열, 회로
Features
Comprehensive Library of Standard Logic and I/O Cells
ATC20 Core and I/O Cells Designed to Operate with VDD = 1.8V ± 0.15V as Main Target
Operating Conditions
IO25 and IO33 Pad Libraries Provide Interfaces to 2.5V and 3V Environments
Oscillators Provide Stable Clock Sources
Basic Analog Input/Output, Power, Ground and Multiplexer Cells Available,
High-performance Analog Cells Can Be Developed on Request
Memory Cells Compiled to the Precise Requirements of the Design
Compatible with Atmel’s Extensive Range of Microcontroller, DSP, Standard-interface
and Application-specific Cells
Description
The Atmel ATC20 CBIC family is fabricated on a proprietary 0.21 micron five-layer-
metal CMOS process intended for use with a supply voltage of 1.8V ± 0.15V. The fol-
lowing table shows the range for which Atmel library cells have been characterized.
Table 1. Recommended Operating Conditions
Symbol
Parameter
Conditions
VDD
VDD2.5
VDD3.3
VI
VO
TEMP
DC Supply Voltage
DC Supply Voltage
DC Supply Voltage
DC Input Voltage
DC Output Voltage
Operating Free Air
Temperature Range
Core and Standard I/Os
2.5V Interface I/Os
3V Interface I/Os
Industrial
Min Typ Max Unit
1.65 1.8 1.95
V
2.25 2.5 2.75
V
3 3.3 3.6 V
0
VDD
V
0
VDD
V
-40 +85 °C
The Atmel cell libraries and megacell compilers have been designed in order to be
compatible with each other. Simulation representations exist for three types of operat-
ing conditions. They correspond to three characterization conditions defined as
follows:
• MIN conditions:
– TJ = -40°C
– VDD (cell) = 1.95V
– Process = fast (industrial best case)
• TYP conditions:
– TJ = +25°C
– VDD (cell) = 1.8V
– Process = typ (industrial typical case)
• MAX conditions:
– TJ = +100°C
– VDD (cell) = 1.65V
– Process = slow (industrial worst case)
Delays to tri-state are defined as delay to turn off (VGS < VT) of the driving devices.
Output pad drain current corresponds to the output current of the pad when the output
voltage is VOL or VOH. The output resistor of the pad and the voltage drop due to
access resistors (in and out of the die) are taken into account. In order to have accu-
rate timing estimates, all characterization has been run on electrical netlists extracted
from the layout database.
Cell-based ASIC
ATC20
Summary
Rev. 1361BS–CBIC–09/02
1
Free Datasheet http://www.datasheet4u.com/




ATC20 pdf, 반도체, 판매, 대치품
Input/Output Pad Cell
Libraries
IO18lib, IO25lib and
IO33lib
The Atmel Input/Output Cell Library, IO18lib, contains a comprehensive list of input, out-
put, bidirectional and tristate cells. The ATC20 (1.8V) cell library includes two special
sets of I/O cells, IO25lib and IO33lib, for interfacing with external 2.5V and 3.3V devices.
Voltage Levels
The IO18lib library is made up exclusively of low-voltage chip interface circuits powered
by a voltage in the range of 1.65V to 1.95V. The library is compatible with the SClib 1.8-
volt standard cells library.
Power and Ground Pads
Designers are strongly encouraged to provide three kinds of power pairs for the IO18lib
library. These are “AC”, “DC” and core power pairs. AC power is used by the I/O to
switch its output from one state to the other. This switching generates noise in the AC
power buses on the chip. DC power is used by the I/O to maintain its output in a steady
state. The best noise performance is achieved when the DC power buses on the chip
are free of noise; designers are encouraged to use separate power pairs for AC and DC
power to prevent most of the noise in the AC power buses from reaching the DC power
buses. The same power pairs can be used to supply both DC power to the I/Os and
power to the core without affecting noise performance.
Table 6. VSS Power Pad Combinations
Core
Switching I/O
Quiet I/O
Vssi
VssAC
VssDC
••
••
•••
Library Cell
Name
pv18i00
pv18a00
pv18d00
pv18e00
pv18b00
pv18f00
Signal Name
VSS
VSS
VSS
VSS
VSS
VSS
Table 7. VDD Power Pad Combinations
Core
Switching I/O
Quiet I/O
Vddi
VddAC
VddDC
••
••
•••
Library Cell
Name
pv18i18
pv18a18
pv18d18
pv18e18
pv18b18
pv18f18
Signal Name
VDD
VDD
VDD
VDD
VDD
VDD
4 ATC20 Summary
1361BS–CBIC–09/02
Free Datasheet http://www.datasheet4u.com/

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ATC20 전자부품, 판매, 대치품
ATC20 Summary
Oscillator Cell
Library Osc18lib
The Atmel Oscillator Library provides stable clock sources. It comprises five oscillators
and one power-on-reset.
The Atmel two-pad oscillators are designed with the Pierce three-point oscillator struc-
ture. For the 32.768 kHz oscillator, the load capacitance must be between 6 pF and 12.5
pF. For high-frequency oscillators, the load capacitance must be between 15 pF and 20
pF. External capacitors must be added in order to obtain the correct load capacitance.
Clock output is high at off state (onosc = 0).
The oscillators provide a bypass mode (onosc = 0), clock = not (xin).
Table 13 gives the available Osc18lib cells and their major characteristics.
Table 13. Oscillator and POR Cells
Cell Name
Description
OSC18f33K
Low frequency, optimized for 32.786 kHz crystal
OSC18f9M
4 - 9 MHz crystal oscillator
OSC18f16M
8 - 16 MHz crystal oscillator
OSC18f27M
10 - 27 MHz crystal oscillator
OSC33KLP
32.786 Hz uPower crystal oscillator. Low frequency,
optimized for 32.786 kHz crystal
POR18
Static and dynamic reset with internal hysterisis
Basic Analog Cell
Library ANA18lib,
ANA25lib, ANA33lib
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
A special set of basic analog I/O cells, ANA25lib (ANA33lib), is available for interfacing
with external 2.5V (3.3V) devices.
General-purpose
Analog Cell Library
GPlib
The General-purpose Analog Cell Library (GPlib) is composed of cells performing vari-
ous analog functions.
Currently available are regulators, power management cells, op amps, comparators,
ADCs and DACs. All these cells are on request only. Additional high-performance, com-
plex analog cells can be developed according to specific customer requirements.
1361BS–CBIC–09/02
7
Free Datasheet http://www.datasheet4u.com/

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