ATC25 Datasheet, PDF (1/11 Pages) ATMEL Corporation – Cell-based ASIC

Features
• Comprehensive Library of Standard Logic Cells
• ATC25 I/O Cells Designed to Operate with V_DD = 2.5V ± 0.25V as Main Target Operating
Conditions
• IO33 Pad Library Provides Interface to 3V Environment
• 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 ATC25 CBIC family is fabricated on a proprietary 0.25 micron five-layer-
metal CMOS process intended for use with a supply voltage of 2.5V ± 0.25V. The fol-
lowing table shows the range for which Atmel library cells have been characterized.
Table 1. Recommended Operating Conditions
Symbol
Parameter
Conditions
V_DD
V_DD3
V_I
V_O
TEMP
DC Supply Voltage
DC Supply Voltage
DC Input Voltage
DC Output Voltage
Operating Free Air
Temperature Range
Core and Standard I/Os
3V Interface I/Os
Industrial
Min Typ Max Unit
2.25 2.5 2.75
V
3
3.3 3.6
V
0
V_DD
V
0
V_DD
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:
T_J = -40°C
V_DD (cell) = 2.75V
Process = fast (industrial best case)
• TYP conditions:
T_J = +25°C
V_DD (cell) = 2.5V
Process = typ (industrial typical case)
• MAX conditions:
T_J = +100°C
V_DD (cell) = 2.25V
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 V_OL or V_OH. 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
ATC25
Summary
Rev. 1306DS–CBIC–09/02
1