CY7C199D Automotive
256-Kbit (32K × 8) Static RAM
256-Kbit (32K × 8) Static RAM
Features
■
Functional Description
The CY7C199D Automotive is a high performance CMOS static
RAM organized as 32,768 words by 8 bits. Easy memory
expansion is provided by an active LOW chip enable (CE), an
active LOW output enable (OE) and tri-state drivers. This device
has an automatic power-down feature, reducing the power
consumption when deselected. The input and output pins (I/O
0
through I/O
7
) are placed in a high-impedance state when the
device is deselected (CE HIGH), the outputs are disabled (OE
HIGH), or during a write operation (CE LOW and WE LOW).
Write to the device by taking chip enable (CE) and write enable
(WE) inputs LOW. Data on the eight I/O pins (I/O
0
through I/O
7
)
is then written into the location specified on the address pins (A
0
through A
14
).
Read from the device by taking chip enable (CE) and output
enable (OE) LOW while forcing write enable (WE) HIGH. Under
these conditions, the contents of the memory location specified
by the address pins appears on the I/O pins.
For a complete list of related resources,
click here.
Temperature ranges
❐
Automotive-E: –40 °C to 125 °C
Operating voltage V
CC
= 5 V
Pin and function compatible with CY7C199C
High speed
❐
t
AA
■
■
■
= 25 ns
= 63 mA
■
Low active power
❐
I
CC
■
Low complementary metal oxide semiconductor (CMOS)
standby power
❐
I
SB2
= 15 mA
■
■
■
2.0 V Data Retention
Automatic power-down when deselected
Complementary metal oxide semiconductor (CMOS) for
optimum speed/power
Transistor-transistor logic (TTL) compatible inputs and outputs
Easy memory expansion with CE and OE features
Available in Pb-free 28-pin 300-Mil-wide small-outline
integrated circuit (SOIC)
■
■
■
Logic Block Diagram
INPUT BUFFER
I/O
0
I/O
1
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
CE
WE
OE
ROW DECODER
I/O
2
SENSE AMPS
32K x 8
ARRAY
I/O
3
I/O
4
I/O
5
COLUMN
DECODER
POWER
DOWN
I/O
6
I/O
7
A
10
A
11
A
12
A
13
A
14
Cypress Semiconductor Corporation
Document Number: 001-65330 Rev. *E
•
198 Champion Court
•
San Jose
,
CA 95134-1709
•
408-943-2600
Revised February 19, 2016
CY7C199D Automotive
Contents
Pin Configuration ............................................................. 3
Selection Guide ................................................................ 3
Maximum Ratings ............................................................. 4
Operating Range ............................................................... 4
Electrical Characteristics ................................................. 4
Capacitance ...................................................................... 5
Thermal Resistance .......................................................... 5
AC Test Loads and Waveforms ....................................... 5
Data Retention Characteristics ....................................... 6
Data Retention Waveform ................................................ 6
Switching Characteristics ................................................ 7
Switching Waveforms ...................................................... 8
Truth Table ...................................................................... 11
Ordering Information ...................................................... 11
Ordering Code Definitions ......................................... 11
Package Diagrams .......................................................... 12
Acronyms ........................................................................ 13
Document Conventions ................................................. 13
Units of Measure ....................................................... 13
Document History Page ................................................. 14
Sales, Solutions, and Legal Information ...................... 15
Worldwide Sales and Design Support ....................... 15
Products .................................................................... 15
PSoC® Solutions ...................................................... 15
Cypress Developer Community ................................. 15
Technical Support ..................................................... 15
Document Number: 001-65330 Rev. *E
Page 2 of 15
CY7C199D Automotive
Pin Configuration
Figure 1. 28-pin SOIC pinout (Top View)
A
14
A
12
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
I/O
0
I/O
1
I/O
2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
WE
A
13
A
8
A
9
A
11
OE
A
10
CE
I/O
7
I/O
6
I/O
5
I/O
4
I/O
3
Selection Guide
Description
Maximum access time
Maximum operating current
Maximum CMOS standby current
-25 (Automotive)
[1]
25
63
15
Unit
ns
mA
mA
Note
1. Automotive product information is preliminary.
Document Number: 001-65330 Rev. *E
Page 3 of 15
CY7C199D Automotive
Maximum Ratings
Exceeding the maximum ratings may impair the useful life of the
device. These user guidelines are not tested.
Storage temperature ................................ –65 °C to +150 °C
Ambient temperature
with power applied ................................... –55 °C to +125 °C
Supply voltage
on V
CC
to relative GND
[2]
...........................–0.5 V to +6.0 V
DC voltage applied to outputs
in High Z State
[2]
................................ –0.5 V to V
CC
+ 0.5 V
DC input voltage
[2]
............................. –0.5 V to V
CC
+ 0.5 V
Output current into outputs (LOW) ............................. 20 mA
Static discharge voltage
(per MIL-STD-883, method 3015) ........................ > 2,001 V
Latch-up current ................................................... > 140 mA
Operating Range
Range
Automotive-E
Ambient
Temperature
V
CC
Speed
25 ns
–40 °C to +125 °C 5 V
0.5 V
Electrical Characteristics
Over the operating range
Parameter
V
OH
V
OL
V
IH
V
IL
I
IX
I
OZ
I
CC
I
SB1
I
SB2
Description
Output HIGH voltage
Output LOW voltage
Input HIGH voltage
[2]
Input LOW voltage
[2]
Test Conditions
I
OH
= –4.0 mA
I
OL
= 8.0 mA
–
–
GND < V
I
< V
CC
GND < V
O
< V
CC
, output disabled
V
CC
= V
CC(max)
, I
OUT
= 0 mA,
f = f
max
= 1/t
RC
V
CC
= V
CC(max)
, CE > V
IH
,
V
IN
> V
IH
or V
IN
< V
IL
, f = f
max
V
CC
= V
CC(max)
, CE > V
CC
– 0.3 V,
V
IN
> V
CC
– 0.3 V or V
IN
< 0.3 V, f = 0
40 MHz
CY7C199D Automotive-25
Min
2.4
–
2.2
–0.5
–5
–5
–
–
–
Max
–
0.4
V
CC
+ 0.5
0.8
+5
+5
63
50
15
Unit
V
V
V
V
µA
µA
mA
mA
mA
Input leakage current
Output leakage current
V
CC
operating supply current
Automatic CE power-down
current – TTL inputs
Automatic CE power-down
current – CMOS inputs
Note
2. V
IL(min)
= –2.0 V and V
IH(max)
= V
CC
+ 1 V for pulse durations of less than 5 ns.
Document Number: 001-65330 Rev. *E
Page 4 of 15
CY7C199D Automotive
Capacitance
Parameter
[3]
C
IN
C
OUT
Description
Input capacitance
Output capacitance
Test Conditions
T
A
= 25
C,
f = 1 MHz, V
CC
= 5.0 V
Max
8
8
Unit
pF
pF
Thermal Resistance
Parameter
[3]
JA
JC
Description
Thermal resistance
(junction to ambient)
Thermal resistance
(junction to case)
Test Conditions
Still air, soldered on a 3 × 4.5 inch, four-layer printed circuit
board
28-pin SOIC
[4]
Unit
54.05
27.44
C/W
C/W
AC Test Loads and Waveforms
Figure 2. AC Test Loads and Waveforms
[5]
Z = 50
Output
50
* Capacitive load consists
of all components of the
Test Environment
1.5 V
Rise Time:
3
ns
All input pulses
3.0 V
30pF*
GND
10%
90%
90%
10%
(a)
High Z characteristics:
5V
OUTPUT
5 pF
Including
JIG and scope
R2
255
(b)
Fall Time:
3
ns
R1 480
(c)
Notes
3. Tested initially and after any design or process changes that may affect these parameters.
4. Automotive product information is preliminary.
5. AC characteristics (except High Z) are tested using the load conditions shown in
Figure 2
(a). High Z characteristics are tested for all speeds using the test load
shown in
Figure 2
(c).
Document Number: 001-65330 Rev. *E
Page 5 of 15
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