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TC55257BSPL-85LT PDF даташит

Спецификация TC55257BSPL-85LT изготовлена ​​​​«Toshiba» и имеет функцию, называемую «SILICON GATE CMOS STATIC RAM».

Детали детали

Номер произв TC55257BSPL-85LT
Описание SILICON GATE CMOS STATIC RAM
Производители Toshiba
логотип Toshiba логотип 

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TC55257BSPL-85LT Даташит, Описание, Даташиты
TOSHIBA
SILICON GATE CMOS
TC55257BPL/BFL/BSPL/BFIL/BTRL-85/10(Ln
32,768 WORD x 8 BIT STATIC RAM
Description
The TC55257BPL is a 262,144 bit CMOS static random access memory organized as 32,768 words by 8 bits and operated from a
single 5V power supply. Advanced circuit techniques provide both high speed and low power features with an operating current of
5mNMHz (typ.) and a minimum cycle time of 85ns.
When CE is a logical high, the device is placed in a low power standby mode in which the standby current is 2~ at room tem-
perature. The TC55257BPL has two control inputs. Chip enable (CE) allows for device selection and data retention control, while an
output enable input (OE) provides fast memory access. The TC55257BPL is suitable for use in microprocessor systems where high
speed, low power, and battery backup are required. The TC55257BPL-(LT) has an operating temperature range of -20 - 7CfC so it
is suitable for use in low temperature applications.
The TC55257BPL is offered in a standard dual-in-line 28-pin plastic package (0.6/0.3 inch width), a small outline plastic pack-
age, and a thin small outline plastic package (forward type, reverse type).
Features
Pin Connection (Top View)
• Low power dissipation:
• Standby current:
• Single 5V power supply
• Access time (max.)
27.5mW/MHz (typ.)
100~(max.)
A14
A12
A7
TC55257BPL/ TC55257BPL/
BFL/BSPL/BFTL/ BFL/BSPL/BFTL/
BTRL-85(LT)
BTRL-10(LT)
Access Time
Chip Enable Access Time
Output Enable Time
• Power down feature:
CE
• Data retention supply voltage:
• Wide operating temperature:
85ns
85ns
45ns
2.0 - 5.5V
-20 - 70°C
100ns
100ns
50ns
1/01
1/02
1/03
GNO
Voo
RIW
A13
A8
A9
All
oe
Al0
CE
1/08
1/07
1/06
1/05
1104
(forward type)
14
28
(reverse type)
28
• Inputs and outputs TIL compatible
• Package
TC55257BPL(LT): DIP28-P-600
TC55257BFL(LT) : SOP28-P-450
TC55257BSPL(LT) : DIP28-P-300B
Pin Names
TC55257BFTL(LT) : TSOP28-P
TC55257BTRL(LT) : TSOP28-P-A
AO - A14 Address Inputs
RIW ReadlWrite Control Input
OE Output Enable Input
CE Chip Enable Input
1/01 - 1/08 Data Input/Output
Voo Power (+5V)
GND
Ground
PIN NO.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
PIN NAME OE An
Ag
As A'3 RIW Voo A'4 A'2
A7
A6
As
A4
A3
PIN NO.
15 16 17 18 19 20 21 22 23 24 25 26 27 28
PIN NAME A2 A, Ao 1/01 1/02 1/03 GND 1/04 1/05 1/06 1/07 1/08 CE A'0
TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
A-17









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TC55257BSPL-85LT Даташит, Описание, Даташиты
TC55257BPUBFUBSPUBFTUBTRL-85/1 O(LT)
Static RAM
Block Diagram
~~~.-:L ~~ ···~I_r..-- _--.
AS o---+.f~"n~ '"
'"
~VDO
A6 ~ '" II: to- '" f-j-
A7
AS
Ag
... ~:x
o-_~-H~:l_i~:I:l
cU.I::.U...I
0'"
0-
cW.::
0
'1"
0
1:.
N,I
0 0 _.
MEMORY CELL
ARRAY
16 ~
~ GND
AllC:~-H~:::::I..:I:c::::l~ ~ ~ ~ "':
512x32x16
:~i
--.,r)2. . . - - -. . .A 14 ~
l:%~ ....J~....~ ~ c.:: ~ ~ 0 ~
(262144)
~
T -c.::
c.::
10.0..--
L_ .--..._ _ _ _ _ _......
_-.r..>.. - - - - - - .
_ ...
r-S..-
1/01'"
~
o-""~---~ 0
.. --- 32 ._--
A SENSE AMP.
II , ....
"""
~ ~ hllli L'-..fto-H-...,..----l 0
COLUMN AOORESS
OECOOER
I ...
-".'.>+_--.
o--+t-HI-t----1
..O.......-++++-+-f_~
v~~
c.::
~ 0~
h:I I
COLUR~~I~~~RESS
~ ~~ ~
1108.....
r-"0- .... 0v ZW
I I I I II I I
~H-~~~g~~
J! 1 ~ -!-~
AOA1 A2A3A4A10
CE
......
R/W
-OE
a....
....u>-----~
- -~'~----------------------------------------I
CE
Operating Mode
~~-~
MODE
Read
Write _.._-
O
u
t
p
u
t_D.._"
e
_.
s
el
ect
Stand by
. H or L
CE
L
L
L
H
OE R/W 1/01 -1/08 POWER
L
H
DOUT
1000
* L DIN 1000
H
H
High-Z
1000
*
*
High-Z
loos
Maximum Ratings
SYMBOL
ITEM
RATING
UNIT
Voo Power Supply Voltage
f--
VIN Input Voltage
--
VI/O Input and Output Voltage
PD Power Dissipation
TSOLDFR
TSTRG
TOPR
Soldering Temperature • Time
--------
Storage Temperature
---
Operating Temperature
-0.3 - 7.0
-0.3* - 7.0
-0.5* - Voo + 0.5
1.0/0.8/0.6**
260· 10
-55 - 150
-20 - 70
V
V
V
W
°C· sec
°C
°c
~UlV with a pulse width of 50ns
., Package df)pendent: 0.6 inch 1.0W, 0.3 inch 0.8W, 0.45 inch 0.6W
A-18
TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.









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TC55257BSPL-85LT Даташит, Описание, Даташиты
Static RAM
TC55257BPUBFUBSPUBFTUBTRL-85/1 O(LT)
DC Recommended Operating Conditions
SYMBOL
PARAMETER
Voo Power Supply Voltage
VIH Input High Voltage
VIL Input Low Voltage
VOH Data Retention Supply Voltage
* -3.0V with a pulse width of 50ns
MIN.
4.5
2.4
-0.3*
2.0
TYP. MAX. UNIT
5.0 5.5
- Voo + 0.3
- 0.6
- 5.5
V
DC Characteristics (Ta =-20 - 70°C, Voo =5V±10%)
SYMBOL
PARAMETER
TEST CONDITION
MIN. TYP. MAX. UNIT
III Input Leakage Current
ILO Output Leakage Current
10H Output High Current
10L Output Low Current
10001
Operating Current
10002
100S1
100S2
Standby Current
VIN = 0 - Voo
CE = VIH or RIW =VIL or OE = VIH
VOUT = 0 - Voo
- - ±1.0 IlA
- - ±1.0 flA
VOH = 2.4V
-1.0 -
- mA
VOL = O.4V
4.0 -
- mA
CE = VIL
RIW = VIH
Other Input = VIHNIL
lOUT = OmA
tcycle = 1fls
tcycle = Min. cycle
-
-
10 -
- 70
CE = 0.2V
RIW = Voo - 0.2V
Other Input
=Voo - 0.2V/0.2V
lOUT = OmA
tcycle = 1flS
tcycle = Min. cycle
-
-
5 - mA
- 60
CE = VIH
- - 3 mA
CE = Voo - 0.2V
Voo = 2.0V - 5.5V
Ta = -20 - 70°C
Ta = 25°C
-
-
- 100
2 - IlA
Capacitance* (Ta = 25°C, f = 1MHz)
SYMBOL
PARAMETER
TEST CONDITION
C IN
COUT
Input Capacitance
Output Capacitance
V IN = GND
VOUT= GND
*This parameter is periodically sampled and is not 100% tested.
MAX.
10
10
UNIT
pF
TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
A-19










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