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PDF AT27BV040-15TI Data sheet ( Hoja de datos )
| Número de pieza | AT27BV040-15TI | |
| Descripción | 4 Megabit 512K x 8 Unregulated Battery-Voltage High Speed OTP CMOS EPROM | |
| Fabricantes | ATMEL Corporation | |
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AT27BV040
Features
Fast Read Access Time - 120 ns
•• Dual Voltage Range Operation
Unregulated Battery Power Supply Range, 2.7V to 3.6V
or Standard 5V ± 10% Supply Range
Compatible with JEDEC Standard AT27C040
•• Low Power CMOS Operation
20 µA max. (less than 1 µA typical) Standby for VCC = 3.6V
29 mW max. Active at 5 MHz for VCC = 3.6V
• JEDEC Standard Packages
32-Lead PLCC
32-Lead TSOP
• High Reliability CMOS Technology
2,000V ESD Protection
200 mA Latchup Immunity
• Rapid™ Programming Algorithm - 100 µs/byte (typical)
• CMOS and TTL Compatible Inputs and Outputs
JEDEC Standard for LVTTL and LVBO
Integrated Product Identification Code
•• Commercial and Industrial Temperature Ranges
Description
The AT27BV040 chip is a high performance, low power, low voltage, 4,194,304 bit
one-time programmable read only memory (EPROM) organized as 512K by 8 bits. It
requires only one supply in the range of 2.7 to 3.6V in normal read mode operation,
making it ideal for fast, portable systems using either regulated or unregulated battery
power.
Atmel’s innovative design techniques provide fast speeds that rival 5V parts while
keeping the low power consumption of a 3V supply. At VCC = 2.7V, any byte can be
accessed in less than 100 ns. With a typical power dissipation of only 18 mW at 5
MHz and VCC = 3V, the AT27BV040 consumes less than one fifth the power of a
standard 5V EPROM. Standby mode supply current is typically less than 1 µA at 3V.
The AT27BV040 simplifies system design and stretches battery lifetime even further
by eliminating the need for power supply regulation.
Pin Configurations
(continued)
Pin Name
A0 - A18
O0 - O7
CE
OE
Function
Addresses
Outputs
Chip Enable
Output Enable
4 Megabit
(512K x 8)
Unregulated
Battery-Voltage™
High Speed
OTP
CMOS EPROM
AT27BV040
PLCC Top View
TSOP Top View
Type 1
0346C
3-53
1 page  
AT27BV040
AC Characteristics for Read Operation (VCC = 2.7V to 3.6V and 4.5V to 5.5V)
AT27BV040
-12 -15
Symbol Parameter
Condition
tACC (3) Address to Output Delay
CE = OE = VIL
tCE (2)
tOE (2, 3)
tDF (4, 5)
CE to Output Delay
OE = VIL
OE to Output Delay
CE = VIL
OE or CE High to Output Float, whichever occurred first
tOH
Output Hold from Address, CE or OE,
whichever occurred first
Notes: 2, 3, 4, 5. - see AC Waveforms for Read Operation.
Min
0
Max Min Max Units
120 150 ns
120 150 ns
50 60 ns
40 50 ns
0 ns
= Preliminary Information
AC Waveforms for Read Operation (1)
Notes: 1. Timing measurement references are 0.8V and 2.0V.
Input AC drive levels are 0.45V and 2.4V. See Input
Test Waveforms and Measurement Levels.
2. OE may be delayed up to tCE-tOE after the falling
edge of CE without impact on tCE.
3. OE may be delayed up to tACC-tOE after the address
is valid without impact on tACC.
4. This parameter is only sampled and is not 100% tested.
5. Output float is defined as the point when data is no longer
driven.
3-57
5 Page | ||
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| PDF Descargar | [ Datasheet AT27BV040-15TI.PDF ] | |
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