– Unregulated Battery Power Supply Range, 2.7V to 3.6V
or Standard 5V
•
8-Megabit Flash and Mask ROM Compatable
•
Low Power CMOS Operation
µ
–20
A Maximum Standby
– 10 mA Max. Active at 5 MHz for V
•
JEDEC Standard Packages
– 44-Lead PLCC
– 44-Lead SOIC (SOP)
– 48-Lead TSOP (12 mm x 20 mm)
•
High Reliability CMOS Technology
– 2,000 ESD Protection
– 200 mA Latchup Immunity
•
Rapid™ Programming Algorithm - 50
•
CMOS and TTL Compatible Inputs and Outputs
– JEDEC Standard for LVTTL and LVBO
•
Integrated Product Identification Code
•
Commercial and Industrial Temperature Ranges
±±±±
10% Supply Range
= 3.6V
CC
µ
s/word (typical)
8-Megabit
(512K x 16 or
1024K x 8)
Unregulated
Battery-Voltage
High Speed
™
Description
The AT27BV800 is a high performance low-power, low-voltage 8,388,608-bit one time
programmable read only memory (OTP EPROM) organized as either 512K by 16 or
1024K by 8 bits. It r eq uire s o nl y one su ppl y in the r ang e of 2.7 to 3.6V i n n ormal r ea d
mode operation. The x16 organization makes this part ideal
for portable and hand held 16- and 32-bit microp rocessor
based systems using either regulated or unregulate d battery power.
Atmel’s innovative design te chniques provide f ast speeds
that rival 5V parts while ke eping the low power c onsumption of a 3V supply. At V
= 2.7V, any w ord can be
CC
accessed in less than 120ns. With a typical power dissipation of only 10 mW at 5mHZ and V
= 3V, the AT27BV800
CC
consumes less than one fifth the power of a standard 5V
EPROM.
Standby mode supply cu rrent is typica lly less than 1 mA at
3V. The AT27BV800 simplifies system design an d
stretches battery lifetime e ven furthe r by elim inating th e
need for power supply regulation.
The AT27BV800 can be organized as either word-wide or
byte-wide. The org anizatio n is se lected v ia the B YTE
/V
PP
pin. When BYTE/VPP is asserted high (VIH), the word-wide
organization is sele cted and the O15/A-1 pi n is used for
O15 data output. When BY TE
/VPP is asserted low (VIL),the
byte wide organization is se lected and the O 15/A-1 pin is
used for the address pin A-1. When the AT27BV800 is logically regarded as x16 (word-wide), but read in the bytewide mode, then with A-1=V
bit word are selected with A-1 =V
the lower eight bits of the 16
IL
the upper 8 bits of the
IH
16-bit word are selected.
The AT27BV800 is available in industry standard JEDEC-
approved one-time programmable (OTP) PLCC, SOIC
(SOP), and TSOP packages. The device features two-line
control(CE
,OE) to elimi nate bu s cont ention in h igh-spee d
systems.
With high den sity 51 2K word o r 1 024K -bit stor age capa bil-
ity, the AT27B V800 allo ws fir mware to be to b e sto red reliably and to be accessed by the system without the delays
of mass storage media.
The AT27BV800 op eratin g with V
at 3.0V produces TTL
CC
level outputs that are compatible with standard TTL logic
devices operating at V
= 5V. At VCC = 2.7V, the part is
CC
compatible with JEDEC approved low voltage battery operation (LVBO) interface specifications. T he device is als o
capable of standard 5-volt operation making it ideally suited
for dual sup ply rang e system s or card produc ts that are
pluggable in both 3-volt and 5-volt hosts.
Atmel’s AT27BV800 has additional features that ensure
high quality a nd e ffici ent produc tion use . The Rapi d
TM
Programming Algorithm reduces the time required to program
the part and guarantees reliable programming. Programming time is typical ly on ly 50µ s/word. The In tegrated Product Identification Code electronically identifies the device
and manufacturer. This feature is used by industry standard
programming equi pmen t to se lect the prop er progr amm ing
equipment and voltages. The AT27BV800 programs
exactly the same way as a standard 5V AT27C800 and
uses the same programming equipment.
System Considerations
Switching between active and standby conditions via the
Chip Enable pin may produce trans ient voltage excursions.
Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device
non-conforman ce. At a mini mum, a 0.1 µF high freque ncy,
low inherent induc tance, cera mic capacitor should be utilized for each device. This capacitor should be connected
between the V
close to the device as possible. Additionally, to stabilize the
supply voltage level on printed circuit boards with large
EPROM arra ys, a 4.7 µ F bulk electrolytic capacitor should
be utilized, again connected between the V
terminals. This capacitor should be positioned as close as
possible to the point where the power supply is connected
to the array.
and Ground terminals of the device, as
CC
and Ground
CC
Block Diagram
2
AT27BV800
Page 3
Absolute Maximum Ratings*
AT27BV800
Temperature Under Bias................................ -55°C to +125°C
*NOTICE:Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
Storage Temperature..................................... -65°C to +150°C
age to the device. This i s a stress rating only a nd
functional operation of the device at these or any
Voltage on Any Pin with
with Respect to Ground..................................-2.0V to +7.0V
(1)
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
Voltage on A9 with
Respect to Ground ......................................-2.0V to +14.0V
(1)
conditions f or e xtended p eriods ma y aff ect de vice
reliability.
Note:1.Minimum voltage is -0.6V DC which may under-
VPP Supply Voltage with
Respect to Ground .......................................-2.0V to +14.0V
(1)
shoot to -2.0V for pulses of less than 20 ns. Max-
VPP Setup Time2
VCC Setup Time2
CE Program Pulse Width
(3)
Data Valid from OE150ns
BYTE /VPP Pulse Rise T ime During
Input Pulse Levels:
0.8V to 2.0V
Input Timing Reference Level:
0.8V to 2.0V
Output Timing Reference Level:
0.8V to 2.0V
Programming
Notes:1. V
must be applied simultaneously or before V
cc
2. This para meter is on ly sampled a nd is not 10 0% tested . Output Flo at is defin ed as the po int where data is no l onger driv en—
see timing diagram.
Manufacturer0000111101E1E
Device Type 111111000F8F8
Note:1. The AT27BV800 has the same Product Identification Code as the AT27C800. Both are programming compatible.
8
AT27BV800
Page 9
Rapid Programming Algorithm
A 50 µs CE pulse width is used to pr og r am. The addres s is
set to the first location. V
is raised to 13.0V. Each add ress is fir st programmed with
one 50 µs CE
tion/reprogramming loo p is exec uted for each addres s. In
the event a word fails to pass verificati on, up to 1 0 succ essive 50 µs pulses are applied with a verification after each
pulse without verification. Then a verifica-
is raised to 6.5V and BYTE/V
CC
PP
AT27BV800
pulse. If the word fails to verify after 10 pulses have been
applied, the part is considered failed. After the word verifies
properly, the next address is selected until all have been
checked. V
words are read again and compared with the original data
to determine if the device passes or fails.
is then lowered to 5.0V and VCC to 5.0V. All
PP
9
Page 10
Ordering Information
t
ACC
(ns)
120100.02AT27BV800-12JC
150100.02AT27BV800-15JC
ICC (mA)
Ordering CodePackageOperation RangeActiveStandby
AT27BV800-12RC
AT27BV800-12TC
100.02AT27BV800-12JI
AT27BV800-12RI
AT27BV800-12TI
AT27BV800-15RC
AT27BV800-15TC
100.02AT27BV800-15JI
AT27BV800-15RI
AT27BV800-15TI
44J
44R
48T
44J
44R
48T
44J
44R
48T
44J
44R
48T
Commercial
(0°C to 70°C)
Industrial
(-40°C to 85°C)
Commercial
(0°C to 70°C)
Industrial
(-40°C to 85°C)
= Preliminary
10
44J
44R
48T
Package Type
44-Lead, Plastic J-Leaded Chip Carrier (PLCC)
44-Lead, 0.525" Wide, Plastic Gull Wing Small Outline Package (SOIC/SOP)
48-Lead, Plastic Thin Small Outline Package (TSOP) 12 x 20 mm
AT27BV800
Page 11
Packaging Information
44-Lead, 0.525" Wide,
44R,
Plastic Gull Wing Small Outline Package (SOIC/SOP)
Dimensions in Inches and (Millimeters)
AT27BV800
48-Lead, 12 x 20 mm,
48T,
Plastic Thin Small Outline Package(TSOP)
Dimensions in Millimeters and (Inches)*
JEDEC OUTLINE MO-142 BD
44J
, 44-Lead, Plastic J-Leaded Chip Carrier (PLCC)
Dimensions in Inches and (Millimeters)
JEDEC STANDARD MS-018 AC
.045(1.14) X 45°
.032(.813)
.026(.660)
.050(1.27) TYP
PIN NO.1
IDENTIFY
.500(12.7) REF SQ
.045(1.14) X 30° - 45°
.656(16.7)
SQ
.650(16.5)
.695(17.7)
SQ
.685(17.4)
.022(.559) X 45° MAX (3X)
.012(.305)
.008(.203)
.630(16.0)
.590(15.0)
.021(.533)
.013(.330)
.043(1.09)
.020(.508)
.120(3.05)
.090(2.29)
.180(4.57)
.165(4.19)
*Controlling dimension: millimeters
11
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