ATMEL AT27BV400-15TC, AT27BV400-15RI, AT27BV400-12JC, AT27BV400-15RC, AT27BV400-15JC Datasheet
...
Features
•
Fast Read Access Time - 120 ns
•
Word-wide or Byte-wide Configurable
•
Dual Voltage Range Operation
– Unregulated Battery Power Supply Range, 2.7V to 3.6V
or Standard 5V
•
4-Megabit Flash and Mask ROM Compatable
•
Low Power CMOS Operation
µµµµ
–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
µµµµ
s/word (typical)
4-Megabit
(256K x 16 or
512K x 8)
Unregulated
Battery-Voltage
High Speed
™
Description
The AT27BV400 is a high performance low-power, low-voltage 4,194,304-bit one time
programmable read only memory (OTP EPROM) organized as either 256K by 16 or
512K by 8 bits. It requires only one supply in the range of 2.7 to 3.6V in normal read
(continued)
Pin Configurations
Pin Name Function
A0 - A17 Addresses
O0 - O15 Outputs
O15/A-1 Output/Address
/V
BYTE
CE
OE
NC No Connect
SOIC (SOP)
NC
NC
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
GND
OE
O0
O8
O1
O9
O2
O10
O3
O11
Byte Mode/
PP
Program Supply
Chip Enable
Output En able
1
44
2
43
3
42
4
41
5
40
6
39
7
38
8
37
9
36
10
35
11
34
12
33
13
32
14
31
15
30
16
29
17
28
18
27
19
26
20
25
21
24
22
23
NC
NC
A8
A9
A10
A11
A12
A13
A14
A15
A16
BYTE/VPP
GND
015/A-1
O7
O14
O6
O13
O5
O12
O4
VCC
A15
A14
A13
A12
A11
A10
A17
A4
A3
A2
A1
A0
CE
GND
OE
O0
O8
O1
1
2
3
4
5
6
7
A9
8
A8
9
NC
10
NC
11
NC
12
NC
13
NC
14
NC
15
NC
16
NC
17
18
A7
19
A6
20
A5
21
A4
22
A3
23
A2
24
A1
PLCC
A5A6A7
A17NCGNDNCA8A9A10
65432
7
8
9
10
11
12
13
14
15
16
17
1819202122232425262728
O9
O2
O10O3O11
1
4443424140
O4
NC
VCC
TSOP
Ty pe 1
A11
39
38
37
36
35
34
33
32
31
30
29
O12O5O13
A12
A13
A14
A15
A16
BYTE/VPP
GND
O15/A-1
07
O14
O6
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
A16
BYTE/VPP
GND
015/A-1
O7
O14
O6
O13
O5
O12
O4
VCC
O11
O3
O10
O2
O9
O1
O8
O0
OE
GND
CE
A0
OTP EPROM
AT27BV400
Preliminary
AT27BV400
Preliminary
Rev. 0989A–03/98
1
mode operation. The by-16 organization makes this part
ideal for portable and hand held 16- and 32-bit microprocessor systems using either regulated or unregulated 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 AT27BV400
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 AT27BV400 simplifies system design an d
stretches battery lifetime e ven furthe r by elim inating th e
need for power supply regulation.
The AT27BV400 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 AT27BV400 is logically regarded as x16 (word-wide), but read in the bytewide mode, then with A-1= V
word are selected with A-1 = V
the lower 8 bits of the 1 6-bi t
IL
the upper 8 bits of the 16-
IH
bit word are selected.
The AT27BV400 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 eliminate bus contention.
With high density 25 6K wor d or 5 12K by te s to rage c ap abi lity, the AT27B V400 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 AT27BV400 operating 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 AT27BV400 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 AT27BV400 programs
exactly the same way as a standard 5V AT27C400 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
AT27BV400
Absolute Maximum Ratings*
Temperature Under Bias................................-55°C to +125°C
Storage Temperature..................................... -65°C to +150°C
Voltage on Any Pin with
with Respect to Ground..................................-2.0V to +7.0V
Voltage on A9 with
Respect to Ground ......................................-2.0V to +14.0V
VPP Supply Voltage with
Respect to Ground .......................................-2.0V to +14.0V
Operating Modes
AT27BV400
*NOTICE: S tresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent damage to the device. This i s a stre ss rating only and
functional operation of the device at these or any
(1)
(1)
Note: 1. Minimum voltage is -0. 6V DC which undershoot
(1)
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions f or e xtended p eriods ma y aff ect de vice
reliability.
to -2.0V for pulses of less than 20 ns. Maximum
output pin voltage is Vcc + 0.75V DC which may
overshoot to + 7.0V for pulses of less than 20 ns.
Outputs
Mode/Pin CE OE Ai BYTE/V
Read Word-wide V
Read Byte-wide Upper V
Read Byte-wide Lower V
Output Disable X
Standby V
Rapid Program
(3)
IL
IL
IL
(1)
IH
V
IL
PGM Verify X V
PGM Inhibit V
Product Identification
Notes: 1. X can be VIL or V
(5)
IH.
IH
V
IL
V
IL
V
IL
V
IL
V
IH
(1)
X
V
IH
IL
V
IH
V
IL
(1)
X
(1)
X
(1)
X
(1)
X
(1)
X
Ai V
Ai V
(1)
X
A9 = V
A0 = VIH or V
A1 - A17 = V
(4)
H
IL
IL
2. Read, output disable, and stand by modes require, 2.7V ≤ VCC ≤ 3.6V, or 4.5V ≤ VCC ≤ 5.5V.
3. Refer to the programming characteristics tables in this data sheet.
= 12.0 ± 0.5V.
4. V
H
5. Two identifier words may be selected. All Ai inputs are held low (VIL) except A9,which is set to VH, and A0, which is toggled
low (V
6. Standby V
) to select the Manufacturer’s Identification word and high (VIH) to select the Device Code word.
IL
current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in I
CC
O
PP
V
IH
V
IL
V
IL
0-O7
D
D
D
OUT
OUT
OUT
O8-O
D
OUT
14
O15/A-1
D
High Z V
High Z V
OUT
IH
IL
XHigh Z
(6)
X
PP
PP
V
PP
V
IH
SB.
High Z
D
IN
D
OUT
High Z
Identification Code
3
DC and AC Operating Conditions for Read Operation
AT27BV400
-12 -15
Operating Temperature (Case)
V
Power Supply
CC
Com. 0°C - 70°C0
Ind. -40°C - 85°C-40
2.7V to 3.6V 2.7V to 3.6V
5V ± 10% 5V ± 10%
°
C - 70°C
°
C - 85°C
DC and Operating Characteristics for Read Operation
Symbol Parameter Condition Min Max Units
V
= 2.7V to 3.6V
CC
±
I
LI
I
LO
(2)
I
PP1
I
SB
I
CC
V
IL
V
IH
V
OL
V
OH
Input Load Current VIN = 0V to V
Output Leakage Current V
(1)
V
Read/Standby Current V
PP
(1)
V
Standby Current
CC
= 0V to V
OUT
= V
PP
CC
I
(CMOS), CE = V
SB1
I
(TTL), CE = 2.0 to V
SB2
VCC Active Current f = 5MHz, I
Input Low V oltage
Input High Voltage
Output Low Voltage
Output High Voltage
VCC = 3.0 to 3.6V -0.6 0.8 V
V
= 2.7 to 3.6V -0.6 0.2 x V
CC
= 3.0 to 3.6V 2.0 VCC + 0.5 V
V
CC
V
= 2.7 to 3.6V 0.7 x V
CC
= 2.0 mA 0.4 V
I
OL
I
= 100 µA0.2V
OL
I
= 20 µA0.1V
OL
= -2.0 mA 2.4 V
I
OH
I
= -100 µAV
OH
I
= -20 µAV
OH
CC
CC
±
0.3V 20
CC
+ 0.5V 100
CC
= 0 mA, CE = VIL, VCC = 3.6V 10 mA
OUT
- 0.2 V
CC
- 0.1 V
CC
VCC = 4.5V to 5.5V
I
I
I
I
I
V
V
V
V
LI
LO
PP1
SB
CC
(2)
IL
IH
OL
OH
Input Load Current VIN = 0V to V
Output Leakage Current V
(1)
V
Read/Standby Current V
PP
(1)
V
Standby Current
CC
OUT
= V
PP
(CMOS), CE = V
I
SB1
I
(TTL), CE = 2.0 to V
SB2
VCC Active Current f = 5 MHz, I
= 0V to V
CC
OUT
CC
CC
±
0.3V 100
CC
CC
= 0 mA, CE = V
+ 0.5V 1 mA
IL
Input Low V oltage -0.6 0.8 V
Input High Voltage 2.0 VCC + 0.5 V
Output Low Voltage IOH = 2.1 mA 0.4 V
Output High Voltage I
= -400 µA2.4V
OH
Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP.
2. VPP may be connected directly to VCC except during programming. The supply current would then be the sum of I
CC
1
±
5
10
CC
VCC + 0.5 V
±
1
±
5
10
40 mA
CC
µ
A
µ
A
µ
A
µ
A
µ
A
V
µ
A
µ
A
µ
A
µ
A
and IPP.
4
AT27BV400
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