Cypress CY7C0853AV-100BBI Flex36â ¢ 3.3 v 32 k / 64 k / 128 k / 256 k ã 36 synchronous dual-port ram Datasheet

CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
FLEx36™ 3.3 V 32 K / 64 K / 128 K / 256 K × 36
Synchronous Dual-Port RAM
FLEx36™ 3.3 V 32 K / 64 K / 128 K / 256 K × 36 Synchronous Dual-Port RAM
Features
Functional Description
■
True dual-ported memory cells that allow simultaneous access
of the same memory location
■
Synchronous pipelined operation
■
Organization of 2-Mbit, 4-Mbit, and 9-Mbit devices
■
Pipelined output mode allows fast operation
The FLEx36™ family includes 2M, 4M, and 9M pipelined,
synchronous, true dual-port static RAMs that are high-speed,
low-power 3.3 V CMOS. Two ports are provided, permitting
independent, simultaneous access to any location in memory.
The result of writing to the same location by more than one port
at the same time is undefined. Registers on control, address, and
data lines allow for minimal setup and hold time.
■
0.18-micron Complimentary metal oxide semiconductor
(CMOS) for optimum speed and power
■
High-speed clock to data access
■
3.3 V low power
❐ Active as low as 225 mA (typ)
❐ Standby as low as 55 mA (typ)
■
Mailbox function for message passing
■
Global master reset
■
Separate byte enables on both ports
■
Commercial and industrial temperature ranges
■
IEEE 1149.1-compatible Joint test action group (JTAG)
boundary scan
■
172-Ball fine-pitch ball grid array (FBGA) (1 mm pitch)
(15 mm × 15 mm)
■
176-Pin thin quad plastic flatpack (TQFP)
(24 mm × 24 mm × 1.4 mm)
■
Counter wrap around control
❐ Internal mask register controls counter wrap-around
❐ Counter-interrupt flags to indicate wrap-around
❐ Memory block retransmit operation
■
Counter readback on address lines
■
Mask register readback on address lines
■
Dual chip enables on both ports for easy depth expansion
During a Read operation, data is registered for decreased cycle
time. Each port contains a burst counter on the input address
register. After externally loading the counter with the initial
address, the counter increments the address internally (more
details to follow). The internal Write pulse width is independent
of the duration of the R/W input signal. The internal Write pulse
is self-timed to allow the shortest possible cycle times.
A HIGH on CE0 or LOW on CE1 for one clock cycle powers down
the internal circuitry to reduce the static power consumption. One
cycle with chip enables asserted is required to reactivate the
outputs.
Additional features include: readback of burst-counter internal
address value on address lines, counter-mask registers to
control the counter wrap-around, counter interrupt (CNTINT)
flags, readback of mask register value on address lines,
retransmit functionality, interrupt flags for message passing,
JTAG for boundary scan, and asynchronous Master Reset
(MRST).
The CY7C0853V/CY7C0853AV device in this family has limited
features. Please see Address Counter and Mask Register
Operations on page 9 for details.
Product Selection Guide
Density
Part number
2-Mbit (64 K × 36)
4-Mbit (128 K × 36)
9-Mbit (256 K × 36)
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
167
167
133
Max. speed (MHz)
Max. access time - clock to data (ns)
4.0
4.0
4.7
Typical operating current (mA)
225
225
270
Package
176-pin TQFP, 172-ball FBGA 176-pin TQFP, 172-ball FBGA
Cypress Semiconductor Corporation
Document Number: 38-06070 Rev. *L
•
198 Champion Court
•
San Jose, CA 95134-1709
172-ball FBGA
•
408-943-2600
Revised August 7, 2012
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Logic Block Diagram
The Logic Block Diagram is as follows. [1]
OEL
R/WL
OER
R/WR
B0L
B0R
B1L
B1R
B2L
B2R
B3L
B3R
CE0L
CE1L
DQ27L–DQ35L
DQ18L–DQ26L
DQ9L–DQ17L
DQ0L–DQ8L
CE0R
CE1R
9
9
9
9
I/O
Control
9
I/O
Control
9
9
9
Addr.
Read
Back
DQ27R–DQ35R
DQ18R–DQ26R
DQ9R–DQ17R
DQ0R–DQ8R
Addr.
Read
Back
True
Dual-Ported
RAM Array
A0L–A17L
18
18
Mask Register
Mask Register
A0R–A17R
CNT/MSKR
CNT/MSKL
ADSL
Counter/
Address
Register
CNTENL
CNTRSTL
CLKL
Address
Address
Decode
Decode
Mirror Reg
INTL
Logic
CNTEN
CNTRSTR
Mirror Reg
CNTINTL
Interrupt
ADS
Counter/
Address
Register
MRST
Reset
Logic
TMS
TDI
TCK
JTAG
TDO
CLKR
CNTINTR
Interrupt
Logic
INTR
Note
1. 9M device has 18 address bits, 4M device has 17 address bits, and 2M device has 16 address bits.
Document Number: 38-06070 Rev. *L
Page 2 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Contents
Pin Configurations ........................................................... 4
Pin Definitions .................................................................. 7
Master Reset ..................................................................... 8
Mailbox Interrupts ............................................................ 8
Address Counter and Mask Register Operations .......... 9
Counter Reset Operation ............................................ 9
Counter Load Operation .............................................. 9
Counter Readback Operation ...................................... 9
Counter Increment Operation ...................................... 9
Counter Hold Operation .............................................. 9
Counter Interrupt ....................................................... 10
Retransmit ................................................................. 10
Mask Reset Operation ............................................... 10
Mask Load Operation ................................................ 10
Mask Readback Operation ........................................ 10
Counting by Two ....................................................... 10
IEEE 1149.1 Serial Boundary Scan (JTAG) .................. 13
Performing a TAP Reset ........................................... 13
Performing a Pause/Restart ...................................... 13
Identification Register Definitions ................................ 13
Scan Registers Sizes ..................................................... 13
Instruction Identification Codes .................................... 13
Maximum Ratings ........................................................... 14
Operating Range ............................................................. 14
Document Number: 38-06070 Rev. *L
Electrical Characteristics ............................................... 14
Capacitance .................................................................... 15
AC Test Load and Waveforms ....................................... 15
Switching Characteristics .............................................. 16
JTAG Timing ................................................................... 18
Switching Waveforms .................................................... 19
Ordering Information ...................................................... 31
256 K × 36 (9 M) 3.3 V Synchronous
CY7C0853V/CY7C0853AV Dual-Port SRAM ................... 31
128 K × 36 (4 M) 3.3 V Synchronous
CY7C0852V/CY7C0852AV Dual-Port SRAM ................... 31
64 K × 36 (2 M) 3.3 V Synchronous
CY7C0851V/CY7C0851AV Dual-Port SRAM ................... 31
Ordering Code Definitions ......................................... 32
Package Diagrams .......................................................... 33
Acronyms ........................................................................ 36
Document Conventions ................................................. 36
Units of Measure ....................................................... 36
Document History Page ................................................. 37
Sales, Solutions, and Legal Information ...................... 39
Worldwide Sales and Design Support ....................... 39
Products .................................................................... 39
PSoC Solutions ......................................................... 39
Page 3 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Pin Configurations
Figure 1. 172-ball BGA pinout (Top View)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
DQ32L
DQ30L
CNTINTL
VSS
DQ13L
VDD
DQ11L
DQ11R
VDD
DQ13R
VSS
CNTINTR
DQ30R
DQ32R
B
A0L
DQ33L
DQ29L
DQ17L
DQ14L
DQ12L
DQ9L
DQ9R
DQ12R
DQ14R
DQ17R
DQ29R
DQ33R
A0R
C
NC
A1L
DQ31L
DQ27L
INTL
DQ15L
DQ10L
DQ10R
DQ15R
INTR
DQ27R
DQ31R
A1R
NC
D
A2L
A3L
DQ35L
DQ34L
DQ28L
DQ16L
VSS
VSS
DQ16R
DQ28R
DQ34R
DQ35R
A3R
A2R
E
A4L
A5L
CE1L
B0L
VDD
VSS
VDD
VDD
B0R
CE1R
A5R
A4R
F
VDD
A6L
A7L
B1L
VDD
VSS
B1R
A7R
A6R
VDD
G
OEL
B2L
B3L
CE0L
CE0R
B3R
B2R
OER
H
VSS
R/WL
A8L
CLKL
CLKR
A8R
R/WR
VSS
J
A9L
A10L
VSS
ADSL
VSS
VDD
ADSR
MRST
A10R
A9R
K
A11L
A12L
A15L[2]
CNTRSTL
VDD
VDD
VSS
VDD
CNTRSTR
A15R[2]
A12R
A11R
L
CNT/MSKL
A13L
CNTENL
DQ26L
DQ25L
DQ19L
VSS
VSS
DQ19R
DQ25R
DQ26R
CNTENR
A13R
CNT/MSKR
M
A16L[2]
A14L
DQ22L
DQ18L
TDI
DQ7L
DQ2L
DQ2R
DQ7R
TCK
DQ18R
DQ22R
A14R
A16R[2]
N
DQ24L
DQ20L
DQ8L
DQ6L
DQ5L
DQ3L
DQ0L
DQ0R
DQ3R
DQ5R
DQ6R
DQ8R
DQ20R
DQ24R
P
DQ23L
DQ21L
TDO
VSS
DQ4L
VDD
DQ1L
DQ1R
VDD
DQ4R
VSS
TMS
DQ21R
DQ23R
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0851AV
Note
2. For CY7C0851V/CY7C0851AV, pins M1 and M14 are NC.
Document Number: 38-06070 Rev. *L
Page 4 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Pin Configurations (continued)
Figure 2. 172-ball BGA pinout (Top View)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
DQ32L
DQ30L
NC
VSS
DQ13L
VDD
DQ11L
DQ11R
VDD
DQ13R
VSS
NC
DQ30R
DQ32R
B
A0L
DQ33L
DQ29L
DQ17L
DQ14L
DQ12L
DQ9L
DQ9R
DQ12R
DQ14R
DQ17R
DQ29R
DQ33R
A0R
C
A17L
A1L
DQ31L
DQ27L
INTL
DQ15L
DQ10L
DQ10R
DQ15R
INTR
DQ27R
DQ31R
A1R
A17R
D
A2L
A3L
DQ35L
DQ34L
DQ28L
DQ16L
VSS
VSS
DQ16R
DQ28R
DQ34R
DQ35R
A3R
A2R
E
A4L
A5L
VDD
B0L
VDD
VSS
VDD
VDD
B0R
VDD
A5R
A4R
F
VDD
A6L
A7L
B1L
VDD
VSS
B1R
A7R
A6R
VDD
G
OEL
B2L
B3L
VSS
VSS
B3R
B2R
OER
H
VSS
R/WL
A8L
CLKL
CLKR
A8R
R/WR
VSS
J
A9L
A10L
VSS
VSS
VSS
VDD
VSS
MRST
A10R
A9R
K
A11L
A12L
A15L
VDD
VDD
VDD
VSS
VDD
VDD
A15R
A12R
A11R
L
VDD
A13L
VSS
DQ26L
DQ25L
DQ19L
VSS
VSS
DQ19R
DQ25R
DQ26R
VSS
A13R
VDD
M
A16L
A14L
DQ22L
DQ18L
TDI
DQ7L
DQ2L
DQ2R
DQ7R
TCK
DQ18R
DQ22R
A14R
A16R
N
DQ24L
DQ20L
DQ8L
DQ6L
DQ5L
DQ3L
DQ0L
DQ0R
DQ3R
DQ5R
DQ6R
DQ8R
DQ20R
DQ24R
P
DQ23L
DQ21L
TDO
VSS
DQ4L
VDD
DQ1L
DQ1R
VDD
DQ4R
VSS
TMS
DQ21R
DQ23R
Document Number: 38-06070 Rev. *L
CY7C0853V/CY7C0853AV
Page 5 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Pin Configurations (continued)
A2L
4
5
6
A3L
VSS
VDD
7
8
9
A4L
A5L
10
11
A6L
CE1L
B2L
12
13
14
15
16
17
B3L
18
OEL
CE0L
19
20
21
22
DQ32R
DQ33R
133
DQ31R
DQ30R
VSS
VDD
136
135
134
137
DQ27R
DQ29R
DQ28R
139
138
140
DQ16R
CNTINTR
INTR
142
141
143
DQ14R
DQ17R
DQ15R
145
144
146
VSS
DQ13R
148
147
VDD
150
149
DQ11R
DQ12R
151
DQ10R
153
152
DQ9L
DQ9R
154
DQ10L
156
155
DQ12L
DQ11L
157
VDD
159
158
DQ13L
VSS
160
DQ14L
162
161
DQ15L
DQ17L
163
DQ16L
165
164
INTL
CNTINTL
166
DQ27L
168
167
DQ28L
DQ29L
169
DQ30L
171
170
VDD
VSS
172
Document Number: 38-06070 Rev. *L
B3R
OER
CE0R
VDD
VDD
VSS
VSS
R/WR
CLKR
MRST
ADSR
CNTENR
CNTRSTR
CNT/MSKR
A8R
A9R
A10R
A11R
A12R
VSS
95
VDD
A13R
A14R
A15R[2]
A16R[2]
DQ24R
88
DQ20R
DQ23R
DQ26R
DQ22R
85
86
87
84
VSS
VDD
DQ21R
82
83
81
DQ19R
DQ25R
DQ18R
79
80
78
TMS
TCK
DQ8R
76
77
75
DQ6R
DQ7R
DQ5R
73
74
71
72
VSS
DQ4R
VDD
70
68
69
DQ2R
DQ3R
DQ1R
67
65
66
DQ0L
DQ0R
DQ1L
64
62
63
DQ3L
DQ2L
VDD
61
59
60
DQ4L
VSS
DQ5L
58
56
57
DQ7L
DQ6L
DQ8L
DQ24L
DQ20L
41
42
43
44
CE1R
B2R
96
94
93
92
91
90
89
55
A15L[2]
A16L[2]
38
39
40
53
54
A14L
36
37
TDI
TDO
VDD
A13L
98
97
DQ18L
VSS
B1R
100
99
52
A10L
A11L
A12L
A4R
A5R
118
117
116
115
102
101
31
32
33
34
35
50
51
A8L
A9L
DQ25L
DQ19L
CNTRSTL
CNT/MSKL
28
29
30
A3R
VSS
VDD
A7R
B0R
107
106
105
104
103
DQ21L
CNTENL
A1R
A2R
A6R
109
108
49
CLKL
VSS
ADSL
23
24
25
26
27
47
48
VSS
R/WL
DQ35R
NC
A0R
120
119
113
112
111
110
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
DQ34R
123
122
121
114
VDD
VSS
VDD
VDD
VSS
125
124
DQ22L
B1L
129
128
127
126
45
46
A7L
B0L
132
131
130
DQ26L
DQ23L
A1L
DQ31L
2
3
174
173
1
DQ35L
NC
A0L
DQ33L
DQ32L
DQ34L
176
175
Figure 3. 176-pin TQFP pinout (Top View)
Page 6 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Pin Definitions
Left Port
A0L–A17L
[3]
Right Port
A0R–A17R
[3]
Description
Address inputs.
ADSL[4]
ADSR[4]
Address strobe input. Used as an address qualifier. This signal should be asserted LOW for the part
using the externally supplied address on the address pins and for loading this address into the burst
address counter.
CE0L[4]
CE0R[4]
Active LOW chip enable input.
CE1L[4]
CE1R[4]
Active HIGH chip enable input.
CLKL
CLKR
Clock signal. Maximum clock input rate is fMAX.
CNTENL[4]
CNTENR[4]
Counter enable input. Asserting this signal LOW increments the burst address counter of its
respective port on each rising edge of CLK. The increment is disabled if ADS or CNTRST are asserted
LOW.
CNTRSTL[4]
CNTRSTR[4]
Counter reset input. Asserting this signal LOW resets to zero the unmasked portion of the burst
address counter of its respective port. CNTRST is not disabled by asserting ADS or CNTEN.
CNT/MSKL[4] CNT/MSKR[4] Address counter mask register enable input. Asserting this signal LOW enables access to the
mask register. When tied HIGH, the mask register is not accessible and the address counter
operations are enabled based on the status of the counter control signals.
DQ0L–DQ35L DQ0R–DQ35R Data bus input/output.
OEL
OER
Output enable input. This asynchronous signal must be asserted LOW to enable the DQ data pins
during Read operations.
INTL
INTR
Mailbox interrupt flag output. The mailbox permits communications between ports. The upper two
memory locations can be used for message passing. INTL is asserted LOW when the right port writes
to the mailbox location of the left port, and vice versa. An interrupt to a port is deasserted HIGH when
it reads the contents of its mailbox.
CNTINTL[4]
CNTINTR[4]
Counter interrupt output. This pin is asserted LOW when the unmasked portion of the counter is
incremented to all “1s.”
R/WL
R/WR
Read/Write enable input. Assert this pin LOW to write to, or HIGH to Read from the dual port memory
array.
B0L–B3L
B0R–B3R
Byte select inputs. Asserting these signals enables Read and Write operations to the corresponding
bytes of the memory array.
MRST
Master reset input. MRST is an asynchronous input signal and affects both ports. Asserting MRST
LOW performs all of the reset functions as described in the text. A MRST operation is required at
power up.
TMS
JTAG test mode select input. It controls the advance of JTAG TAP state machine. State machine
transitions occur on the rising edge of TCK.
TDI
JTAG test data input. Data on the TDI input is shifted serially into selected registers.
TCK
JTAG test clock input.
TDO
JTAG test data output. TDO transitions occur on the falling edge of TCK. TDO is normally
three-stated except when captured data is shifted out of the JTAG TAP.
VSS
Ground inputs.
VDD
Power inputs.
Notes
3. 9M device has 18 address bits, 4M device has 17 address bits, and 2M device has 16 address bits.
4. These pins are not available for CY7C0853V/CY7C0853AV device.
Document Number: 38-06070 Rev. *L
Page 7 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Master Reset
The FLEx36 family devices undergo a complete reset by taking
its MRST input LOW. The MRST input can switch
asynchronously to the clocks. The MRST initializes the internal
burst counters to zero, and the counter mask registers to all ones
(completely unmasked). The MRST also forces the Mailbox
Interrupt (INT) flags and the Counter Interrupt (CNTINT) flags
HIGH. The MRST must be performed on the FLEx36 family
devices after power up.
Mailbox Interrupts
The upper two memory locations may be used for message
passing and permit communications between ports. Table 1
shows the interrupt operation for both ports of
CY7C853V/CY7C0853AV. The highest memory location, 3FFFF
is the mailbox for the right port and 3FFFE is the mailbox for the
left port. Table 1 shows that in order to set the INTR flag, a Write
operation by the left port to address 3FFFF asserts INTR LOW.
At least one byte has to be active for a Write to generate an
interrupt. A valid Read of the 3FFFF location by the right port
resets INTR HIGH. At least one byte has to be active in order for
a Read to reset the interrupt. When one port Writes to the other
port’s mailbox, the INT of the port that the mailbox belongs to is
asserted LOW. The INT is reset when the owner (port) of the
mailbox Reads the contents of the mailbox. The interrupt flag is
set in a flow-thru mode (that is it follows the clock edge of the
writing port). Also, the flag is reset in a flow-thru mode (that is it
follows the clock edge of the reading port).
Each port can read the other port’s mailbox without resetting the
interrupt. And each port can write to its own mailbox without
setting the interrupt. If an application does not require message
passing, INT pins should be left open.
Table 1. Interrupt Operation Example [5, 6, 7, 8, 9]
Function
R/WL
L
X
X
H
Set right INTR flag
Reset right INTR flag
Set left INTL flag
Reset left INTL flag
Left Port
CEL
A0L–17L
L
3FFFF
X
X
X
X
L
3FFFE
INTL
X
X
L
H
R/WR
X
H
L
X
Right Port
CER
A0R–17R
X
X
L
3FFFF
L
3FFFE
X
X
INTR
L
H
X
X
Table 2. Address Counter and Counter-Mask Register Control Operation (Any Port) [10, 11]
CLK
X
MRST
L
CNT/MSK CNTRST
X
X
ADS
X
CNTEN
Operation
X
Master reset
Description
Reset address counter to all 0s and mask
register to all 1s.
Reset counter unmasked portion to all 0s.
H
H
L
X
X
Counter reset
H
H
H
L
L
Counter load
H
H
H
L
H
H
H
H
H
L
Load counter with external address value
presented on address lines.
Counter readback Read out counter internal value on address
lines.
Counter increment Internally increment address counter value.
H
H
H
H
H
Counter hold
H
L
L
X
X
Mask reset
H
L
H
L
L
Mask load
H
L
H
L
H
Mask readback
H
L
H
H
X
Reserved
Constantly hold the address value for
multiple clock cycles.
Reset mask register to all 1s.
Load mask register with value presented on
the address lines.
Read out mask register value on address
lines.
Operation undefined
Notes
5. 9 M device has 18 address bits, 4M device has 17 address bits, and 2M device has 16 address bits.
6. CE is internal signal. CE = LOW if CE0 = LOW and CE1 = HIGH. For a single Read operation, CE only needs to be asserted once at the rising edge of the CLK and
can be deasserted after that. Data is out after the following CLK edge and is three-stated after the next CLK edge.
7. OE is “Don’t Care” for mailbox operation.
8. At least one of B0, B1, B2, or B3 must be LOW.
9. A16x is a NC for CY7C0851V/CY7C0851AV, therefore the Interrupt Addresses are FFFF and EFFF.
10. “X” = “Don’t Care,” “H” = HIGH, “L” = LOW.
11. Counter operation and mask register operation is independent of chip enables.
Document Number: 38-06070 Rev. *L
Page 8 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Address Counter and Mask Register
Operations
will reset the counter and mirror registers to 00000, as will master
reset (MRST).
This section [12] describes the features only apply to CY7C0851V
/ CY7C0851AV / CY7C0852V / CY7C0852AV devices, but not to
the CY7C0853V/CY7C0853AV device. Each port of these
devices has a programmable burst address counter. The burst
counter contains three registers: a counter register, a mask
register, and a mirror register.
Counter Load Operation
The counter register contains the address used to access the
RAM array. It is changed only by the Counter Load, Increment,
Counter Reset, and by master reset (MRST) operations.
The mask register value affects the Increment and Counter
Reset operations by preventing the corresponding bits of the
counter register from changing. It also affects the counter
interrupt output (CNTINT). The mask register is changed only by
the Mask Load and Mask Reset operations, and by the MRST.
The mask register defines the counting range of the counter
register. It divides the counter register into two regions: zero or
more “0s” in the most significant bits define the masked region,
one or more “1s” in the least significant bits define the unmasked
region. Bit 0 may also be “0”, masking the least significant
counter bit and causing the counter to increment by two instead
of one.
The mirror register is used to reload the counter register on
increment operations (see “retransmit”, below). It always
contains the value last loaded into the counter register, and is
changed only by the Counter Load operation, and by the MRST.
Table 2 on page 8 summarizes the operation of these registers
and the required input control signals. The MRST control signal
is asynchronous. All the other control signals in Table 2 on page
8 (CNT/MSK, CNTRST, ADS, CNTEN) are synchronized to the
port’s CLK. All these counter and mask operations are
independent of the port’s chip enable inputs (CE0 and CE1).
Counter enable (CNTEN) inputs are provided to stall the
operation of the address input and utilize the internal address
generated by the internal counter for fast, interleaved memory
applications. A port’s burst counter is loaded when the port’s
address strobe (ADS) and CNTEN signals are LOW. When the
port’s CNTEN is asserted and the ADS is deasserted, the
address counter increments on each LOW to HIGH transition of
that port’s clock signal. This will Read/Write one word from/into
each successive address location until CNTEN is deasserted.
The counter can address the entire memory array, and loops
back to the start. Counter reset (CNTRST) is used to reset the
unmasked portion of the burst counter to 0s. A counter-mask
register is used to control the counter wrap.
Counter Reset Operation
All unmasked bits of the counter are reset to “0.” All masked bits
remain unchanged. The mirror register is loaded with the value
of the burst counter. A Mask Reset followed by a Counter Reset
The address counter and mirror registers are both loaded with
the address value presented at the address lines.
Counter Readback Operation
The internal value of the counter register can be read out on the
address lines. Readback is pipelined; the address is valid tCA2
after the next rising edge of the port’s clock. If address readback
occurs while the port is enabled (CE0 LOW and CE1 HIGH), the
data lines (DQs) is three-stated. Figure 4 on page 11 shows a
block diagram of the operation.
Counter Increment Operation
Once the address counter register is initially loaded with an
external address, the counter can internally increment the
address value, potentially addressing the entire memory array.
Only the unmasked bits of the counter register are incremented.
The corresponding bit in the mask register must be a “1” for a
counter bit to change. The counter register is incremented by 1
if the least significant bit is unmasked, and by 2 if it is masked. If
all unmasked bits are “1”, the next increment wraps the counter
back to the initially loaded value. If an Increment results in all the
unmasked bits of the counter being “1s”, a counter interrupt flag
(CNTINT) is asserted. The next Increment returns the counter
register to its initial value, which was stored in the mirror register.
The counter address can instead be forced to loop to 00000 by
externally connecting CNTINT to CNTRST.[13] An increment that
results in one or more of the unmasked bits of the counter being
“0” deasserts the counter interrupt flag. The example in Figure 5
on page 12 shows the counter mask register loaded with a mask
value of 0003Fh unmasking the first 6 bits with bit “0” as the LSB
and bit “16” as the MSB. The maximum value the mask register
can be loaded with is 1FFFFh. Setting the mask register to this
value allows the counter to access the entire memory space. The
address counter is then loaded with an initial value of 8h. The
base address bits (in this case, the 6th address through the 16th
address) are loaded with an address value but do not increment
once the counter is configured for increment operation. The
counter address starts at address 8h. The counter increments its
internal address value till it reaches the mask register value of
3Fh. The counter wraps around the memory block to location 8h
at the next count. CNTINT is issued when the counter reaches
its maximum value.
Counter Hold Operation
The value of all three registers can be constantly maintained
unchanged for an unlimited number of clock cycles. Such
operation is useful in applications where wait states are needed,
or when address is available a few cycles ahead of data in a
shared bus interface.
Notes
12. This section describes the CY7C0852V/CY7C0852AV, which have 17 address bits and a maximum address value of 1FFFF. The CY7C0851V/CY7C0851AV has 16
address bits, register lengths of 16 bits, and a maximum address value of FFFF.
13. CNTINT and CNTRST specs are guaranteed by design to operate properly at speed grade operating frequency when tied together.
Document Number: 38-06070 Rev. *L
Page 9 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Counter Interrupt
Mask Load Operation
The counter interrupt (CNTINT) is asserted LOW when an
increment operation results in the unmasked portion of the
counter register being all “1s.” It is deasserted HIGH when an
Increment operation results in any other value. It is also
de-asserted by Counter Reset, Counter Load, Mask Reset and
Mask Load operations, and by MRST.
The mask register is loaded with the address value presented at
the address lines. Not all values permit correct increment
operations. Permitted values are of the form 2n – 1 or 2n – 2.
From the most significant bit to the least significant bit, permitted
values have zero or more “0s”, one or more “1s”, or one “0”. Thus
1FFFF, 003FE, and 00001 are permitted values, but 1F0FF,
003FC, and 00000 are not.
Retransmit
Retransmit is a feature that allows the Read of a block of memory
more than once without the need to reload the initial address.
This eliminates the need for external logic to store and route
data. It also reduces the complexity of the system design and
saves board space. An internal “mirror register” is used to store
the initially loaded address counter value. When the counter
unmasked portion reaches its maximum value set by the mask
register, it wraps back to the initial value stored in this “mirror
register”. If the counter is continuously configured in increment
mode, it increments again to its maximum value and wraps back
to the value initially stored into the “mirror register”. Thus, the
repeated access of the same data is allowed without the need
for any external logic.
Mask Reset Operation
The mask register is reset to all “1s”, which unmasks every bit of
the counter. Master reset (MRST) also resets the mask register
to all “1s”.
Document Number: 38-06070 Rev. *L
Mask Readback Operation
The internal value of the mask register can be read out on the
address lines. Readback is pipelined; the address is valid tCM2
after the next rising edge of the port’s clock. If mask readback
occurs while the port is enabled (CE0 LOW and CE1 HIGH), the
data lines (DQs) is three-stated. Figure 4 on page 11 shows a
block diagram of the operation.
Counting by Two
When the least significant bit of the mask register is “0,” the
counter increments by two. This may be used to connect the
CY7C0851V/CY7C0851AV/CY7C0852V/CY7C0852AV as a
72-bit single port SRAM in which the counter of one port counts
even addresses and the counter of the other port counts odd
addresses. This even-odd address scheme stores one half of the
72-bit data in even memory locations, and the other half in odd
memory locations.
Page 10 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Figure 4. Counter, Mask, and Mirror Logic Block Diagram [14]
CNT/MSK
CNTEN
Decode
Logic
ADS
CNTRST
MRST
Bidirectional
Address
Lines
Mask
Register
Counter/
Address
Register
Address
RAM
Decode
Array
CLK
Load/Increment
17
From
Address
Lines
Mirror
Counter
1
To Readback
and Address
Decode
1
0
17
From
Mask
Register
From
Mask
From
Counter
0
Increment
Logic
Wrap
17
17
17
Bit 0
17
+1
Wrap
Detect
1
+2
Wrap
0
1
17
To Counter
0
Note
14. 9M device has 18 address bits, 4M device has 17 address bits, and 2M device has 16 address bits.
Document Number: 38-06070 Rev. *L
Page 11 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Figure 5. Programmable Counter-Mask Register Operation [15, 16]
Example:
Load
Counter-Mask
Register = 3F
CNTINT
H
0
0
0s
216 215
H
X X
Xs
216 215
Max
Address
Register
L
X X
H
X X
216 215
1
1 1
1
Unmasked Address
X 0
0
1
0 0
Xs
X 1 1
1
1
Mask
Register
bit-0
0
26 25 24 23 22 21 20
216 215
Max + 1
Address
Register
1
26 25 24 23 22 21 20
Masked Address
Load
Address
Counter = 8
0 1
1
Address
Counter
bit-0
1
26 25 24 23 22 21 20
Xs
X 0 0
1
0 0
0
26 25 24 23 22 21 20
Notes
15. 9M device has 18 address bits, 4M device has 17 address bits, and 2M device has 16 address bits.
16. The “X” in this diagram represents the counter upper bits.
Document Number: 38-06070 Rev. *L
Page 12 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
IEEE 1149.1 Serial Boundary Scan (JTAG)
The CY7C0851V / CY7C0851AV / CY7C0852V / CY7C0852AV /
CY7C0853V / CY7C0853AV incorporates an IEEE 1149.1 serial
boundary scan [17] test access port (TAP). The TAP controller
functions in a manner that does not conflict with the operation of
other devices using 1149.1-compliant TAPs. The TAP operates
using JEDEC-standard 3.3 V I/O logic levels. It is composed of
three input connections and one output connection required by
the test logic defined by the standard.
Performing a TAP Reset
A reset is performed by forcing TMS HIGH (VDD) for five rising
edges of TCK. This reset does not affect the operation of the
devices, and may be performed while the devices are operating.
An MRST must be performed on the devices after power-up.
Performing a Pause/Restart
When a SHIFT-DR PAUSE-DR SHIFT-DR is performed the scan
chain outputs the next bit in the chain twice. For example, if the
value expected from the chain is 1010101, the device outputs a
11010101. This extra bit causes some testers to report an
erroneous failure for the devices in a scan test. Therefore the
tester should be configured to never enter the PAUSE-DR state.
Identification Register Definitions
Instruction Field
Value
Description
Revision number (31:28)
0h
Cypress device ID (27:12)
C001h
Defines Cypress part number for the CY7C0851V/CY7C0851AV
C002h
Defines Cypress part number for the CY7C0852V/CY7C0852AV and
CY7C0853V/CY7C0853AV
Cypress JEDEC ID (11:1)
Reserved for version number.
034h
ID register presence (0)
Allows unique identification of the DP family device vendor.
1
Indicates the presence of an ID register.
Scan Registers Sizes
Register Name
Bit Size
Instruction
4
Bypass
1
Identification
32
Boundary Scan
n[18]
Instruction Identification Codes
Instruction
EXTEST
Code
Description
0000
Captures the Input/Output ring contents. Places the BSR between the TDI and TDO.
BYPASS
1111
Places the BYR between TDI and TDO.
IDCODE
1011
Loads the IDR with the vendor ID code and places the register between TDI and TDO.
HIGHZ
0111
Places BYR between TDI and TDO. Forces all CY7C0851AV / CY7C0852AV /
CY7C0853AV output drivers to a High Z state.
CLAMP
0100
Controls boundary to 1/0. Places BYR between TDI and TDO.
SAMPLE/PRELOAD
1000
Captures the input/output ring contents. Places BSR between TDI and TDO.
1100
Resets the non-boundary scan logic. Places BYR between TDI and TDO.
NBSRST
RESERVED
All other codes
Other combinations are reserved. Do not use other than the above.
Notes
17. Boundary scan is IEEE 1149.1-compatible. See “Performing a Pause/Restart” for deviation from strict 1149.1 compliance.
18. See details in the device BSDL files.
Document Number: 38-06070 Rev. *L
Page 13 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
DC input voltage ........................... –0.5 V to VDD + 0.5 V [20]
Maximum Ratings
Exceeding maximum ratings [19] 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
Output current into outputs (LOW) ............................. 20 mA
Static discharge voltage
(JEDEC JESD22-A114-2000B) .............................. > 2000 V
Latch-up current .................................................... > 200 mA
Operating Range
Supply voltage to ground potential .............–0.5 V to + 4.6 V
DC voltage applied to
Outputs in High Z state ....................... –0.5 V to VDD + 0.5 V
Range
Ambient Temperature
VDD
0 °C to +70 °C
3.3 V ± 165 mV
–40 °C to +85 °C
3.3 V ± 165 mV
Commercial
Industrial
Electrical Characteristics
Over the Operating Range
Parameter
VOH
VOL
VIH
VIL
IOZ
IIX1
IIX2
ICC
ISB1[21]
ISB2[21]
ISB3[21]
ISB4[21]
ISB5
Description
Output HIGH voltage (VDD = Min., IOH= –4.0 mA)
Output LOW voltage (VDD = Min., IOL= +4.0 mA)
Input HIGH voltage
Input LOW voltage
Output leakage current
Input leakage current except TDI, TMS, MRST
Input leakage current TDI, TMS, MRST
CY7C0851V /
Operating current for
CY7C0851AV /
(VDD = Max.,IOUT = 0 mA),
CY7C0852V /
Outputs disabled
CY7C0852AV
CY7C0853V /
CY7C0853AV
Standby current (both ports TTL level)
CEL and CER  VIH, f = fMAX
Standby current (one port TTL level)
CEL | CER  VIH, f = fMAX
Standby current (both ports CMOS level)
CEL and CER  VDD – 0.2 V, f = 0
Standby current (one port CMOS level)
CEL | CER  VIH, f = fMAX
CY7C0853V /
Operating current
(VDD = Max, IOUT = 0 mA, f = 0) CY7C0853AV
Outputs disabled
-167
-133
-100
Unit
Min Typ Max Min Typ Max Min Typ Max
2.4
–
–
2.4
–
–
2.4
–
–
V
–
–
0.4
–
–
0.4
–
–
0.4
V
2.0
–
–
2.0
–
–
2.0
–
–
V
–
–
0.8
–
–
0.8
–
–
0.8
V
–10
–
10 –10
–
10 –10
–
10
A
–10
–
10 –10
–
10 –10
–
10
A
–0.1
–
1.0 –0.1
–
1.0 –0.1
–
1.0
mA
–
225 300
–
225 300
–
–
–
mA
–
–
–
–
270
400
–
200
310
–
90
115
–
90
115
–
90
115
mA
–
160
210
–
160
210
–
160
210
mA
–
55
75
–
55
75
–
55
75
mA
–
160
210
–
160
210
–
160
210
mA
–
–
–
–
70
100
–
70
100
mA
Notes
19. The voltage on any input or I/O pin can not exceed the power pin during power up.
20. Pulse width < 20 ns.
21. ISB1, ISB2, ISB3 and ISB4 are not applicable for CY7C0853V / CY7C0853AV because it can not be powered down by using chip enable pins.
Document Number: 38-06070 Rev. *L
Page 14 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Capacitance
Part Number [22]
Parameter
Description
Test Conditions
Unit
13
pF
Input capacitance
10
pF
CY7C0853V / CY7C0853AV CIN
Input capacitance
22
pF
Output capacitance
20
pF
COUT
TA = 25 °C, f = 1 MHz,
VDD = 3.3 V
Max
CY7C0851V / CY7C0851AV / CIN
CY7C0852V / CY7C0852AV
COUT
Output capacitance
AC Test Load and Waveforms
Figure 6. AC Test Load and Waveforms
3.3 V
Z0 = 50
R = 50 
R1 = 590 
OUTPUT
OUTPUT
C = 10 pF
C = 5 pF
VTH = 1.5 V
(a) Normal Load (Load 1)
R2 = 435 
(b) Three-state Delay (Load 2)
3.0 V
90%
ALL INPUT PULSES
10%
VSS
< 2 ns
90%
10%
< 2 ns
Note
22. COUT also references CI/O.
Document Number: 38-06070 Rev. *L
Page 15 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Switching Characteristics
Over the Operating Range
-167
Parameter
Description
-133
CY7C0851V /
CY7C0851AV /
CY7C0852V /
CY7C0852AV
Min
Max
CY7C0851V /
CY7C0851AV /
CY7C0852V /
CY7C0852AV
Min
Max
-100
CY7C0853V /
CY7C0853AV
CY7C0853V /
CY7C0853AV
Min
Max
Min
Max
Unit
fMAX2
Maximum operating frequency
–
167
–
133
–
133
–
100
MHz
tCYC2
Clock cycle time
6.0
–
7.5
–
7.5
–
10.0
–
ns
tCH2
Clock HIGH time
2.7
–
3.0
–
3.0
–
4.0
–
ns
tCL2
Clock LOW time
2.7
–
3.0
–
3.0
–
4.0
–
ns
tR
[23]
Clock rise time
–
2.0
–
2.0
–
2.0
–
3.0
ns
tF[23]
Clock fall time
–
2.0
–
2.0
–
2.0
–
3.0
ns
tSA
Address setuptime
2.3
–
2.5
–
2.5
–
3.0
–
ns
tHA
Address hold time
0.6
–
0.6
–
0.6
–
0.6
–
ns
tSB
Byte select setup time
2.3
–
2.5
–
2.5
–
3.0
–
ns
tHB
Byte select hold time
0.6
–
0.6
–
0.6
–
0.6
–
ns
tSC
Chip enable setup time
2.3
–
2.5
–
NA
–
NA
–
ns
tHC
Chip enable hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tSW
R/W setup time
2.3
–
2.5
–
2.5
–
3.0
–
ns
tHW
R/W hold time
0.6
–
0.6
–
0.6
–
0.6
–
ns
tSD
Input data setup time
2.3
–
2.5
–
2.5
–
3.0
–
ns
tHD
Input data hold time
0.6
–
0.6
–
0.6
–
0.6
–
ns
tSAD
ADS setup time
2.3
–
2.5
–
NA
–
NA
–
ns
tHAD
ADS hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tSCN
CNTEN setup time
2.3
–
2.5
–
NA
–
NA
–
ns
tHCN
CNTEN hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tSRST
CNTRST setup time
2.3
–
2.5
–
NA
–
NA
–
ns
tHRST
CNTRST hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tSCM
CNT/MSK setup time
2.3
–
2.5
–
NA
–
NA
–
ns
tHCM
CNT/MSK hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tOE
Output enable to data valid
–
4.0
–
4.4
–
4.7
–
5.0
ns
tOLZ[24, 25]
OE to Low Z
0
–
0
–
0
–
0
–
ns
tOHZ[24, 25]
OE to High Z
0
4.0
0
4.4
0
4.7
0
5.0
ns
tCD2
Clock to data valid
–
4.0
–
4.4
–
4.7
–
5.0
ns
tCA2
Clock to counter address valid
–
4.0
–
4.4
–
NA
–
NA
ns
tCM2
Clock to mask register readback
valid
–
4.0
–
4.4
–
NA
–
NA
ns
tDC
Data output hold after clock HIGH
1.0
–
1.0
–
1.0
–
1.0
–
ns
Note
23. Except JTAG signals (tr and tf < 10 ns [max.]).
24. This parameter is guaranteed by design, but it is not production tested.
25. Test conditions used are Load 2.
Document Number: 38-06070 Rev. *L
Page 16 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Switching Characteristics (continued)
Over the Operating Range
-167
Parameter
Description
-133
CY7C0851V /
CY7C0851AV /
CY7C0852V /
CY7C0852AV
Min
Max
Clock HIGH to output High Z
0
Clock HIGH to output Low Z
1.0
tSINT
Clock to INT set time
tRINT
Clock to INT reset time
tSCINT
tRCINT
tCKHZ[26, 27]
tCKLZ[26, 27]
CY7C0851V /
CY7C0851AV /
CY7C0852V /
CY7C0852AV
-100
CY7C0853V /
CY7C0853AV
CY7C0853V /
CY7C0853AV
Min
Max
Min
Max
Unit
Min
Max
4.0
0
4.4
0
4.7
0
5.0
ns
4.0
1.0
4.4
1.0
4.7
1.0
5.0
ns
0.5
6.7
0.5
7.5
0.5
7.5
0.5
10
ns
0.5
6.7
0.5
7.5
0.5
7.5
0.5
10
ns
Clock to CNTINT set time
0.5
5.0
0.5
5.7
NA
NA
NA
NA
ns
Clock to CNTINT reset time
0.5
5.0
0.5
5.7
NA
NA
NA
NA
ns
5.2
–
6.0
–
6.0
–
8.0
–
ns
7.0
–
7.5
–
7.5
–
10.0
–
ns
Port to Port Delays
tCCS
Clock to clock skew
Master Reset Timing
tRS
Master reset pulse width
tRSS
Master reset setup time
6.0
–
6.0
–
6.0
–
8.5
–
ns
tRSR
Master reset recovery time
6.0
–
7.5
–
7.5
–
10.0
–
ns
tRSF
Master reset to outputs inactive
–
10.0
–
10.0
–
10.0
–
10.0
ns
tRSCNTINT
Master reset to counter interrupt
flag reset time
–
10.0
–
10.0
–
NA
–
NA
ns
Notes
26. This parameter is guaranteed by design, but it is not production tested.
27. Test conditions used are Load 2.
Document Number: 38-06070 Rev. *L
Page 17 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
JTAG Timing
Parameter
167/133/100
Description
Min
Max
Unit
fJTAG
Maximum JTAG TAP controller frequency
–
10
MHz
tTCYC
TCK clock cycle time
100
–
ns
tTH
TCK clock HIGH time
40
–
ns
tTL
TCK clock LOW Time
40
–
ns
tTMSS
TMS setup to TCK clock rise
10
–
ns
tTMSH
TMS hold after TCK clock rise
10
–
ns
tTDIS
TDI setup to TCK clock rise
10
–
ns
tTDIH
TDI hold after TCK clock rise
10
–
ns
tTDOV
TCK clock LOW to TDO valid
–
30
ns
tTDOX
TCK clock LOW to TDO invalid
0
–
ns
Figure 7. JTAG Switching Waveform
tTH
Test Clock
TCK
tTMSS
tTL
tTCYC
tTMSH
Test Mode Select
TMS
tTDIS
tTDIH
Test Data-In
TDI
Test Data-Out
TDO
Document Number: 38-06070 Rev. *L
tTDOX
tTDOV
Page 18 of 39
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CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Switching Waveforms
Figure 8. Master Reset
tRS
MRST
ALL
ADDRESS/
DATA
LINES
tRSF
tRSS
ALL
OTHER
INPUTS
tRSR
INACTIVE
ACTIVE
TMS
CNTINT
INT
TDO
Figure 9. Read Cycle [28, 29, 30, 31, 32]
tCH2
tCYC2
tCL2
CLK
CE
tSC
tHC
tSB
tHB
tSW
tSA
tHW
tHA
tSC
tHC
B0–B3
R/W
ADDRESS
DATAOUT
An
An+1
1 Latency
An+2
tDC
tCD2
Qn
tCKLZ
An+3
Qn+1
tOHZ
Qn+2
tOLZ
OE
tOE
Notes
28. CE is internal signal. CE = LOW if CE0 = LOW and CE1 = HIGH. For a single Read operation, CE only needs to be asserted once at the rising edge of the CLK and
can be deasserted after that. Data is out after the following CLK edge and is three-stated after the next CLK edge.
29. OE is asynchronously controlled; all other inputs (excluding MRST and JTAG) are synchronous to the rising clock edge.
30. ADS = CNTEN = LOW, and MRST = CNTRST = CNT/MSK = HIGH.
31. The output is disabled (high-impedance state) by CE = VIH following the next rising edge of the clock.
32. Addresses do not have to be accessed sequentially since ADS = CNTEN = VIL with CNT/MSK = VIH constantly loads the address on the rising edge of the CLK.
Numbers are for reference only.
Document Number: 38-06070 Rev. *L
Page 19 of 39
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CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Switching Waveforms (continued)
Figure 10. Bank Select Read [33, 34]
tCH2
tCYC2
tCL2
CLK
tHA
tSA
ADDRESS(B1)
A0
A1
A3
A2
A4
A5
tHC
tSC
CE(B1)
tCD2
tHC
tSC
tCD2
tHA
tSA
tDC
A0
ADDRESS(B2)
A1
tCKHZ
Q3
Q1
Q0
DATAOUT(B1)
tCD2
tCKHZ
tDC
tCKLZ
A3
A2
A4
A5
tHC
tSC
CE(B2)
tSC
tCD2
tHC
DATAOUT(B2)
tCKHZ
tCD2
Q4
Q2
tCKLZ
tCKLZ
Figure 11. Read-to-Write-to-Read (OE = LOW) [32, 35, 36, 37, 38]
tCH2
tCYC2
tCL2
CLK
CE
tSC
tHC
tSW
tHW
R/W
tSW
tHW
An
ADDRESS
tSA
An+1
An+2
tHA
DATAIN
An+2
An+3
An+4
tSD tHD
tCD2
tCKHZ
Dn+2
Qn
DATAOUT
tCD2
tCD2
Qn+1
Qn+3
tCKLZ
READ
NO OPERATION
WRITE
READ
Notes
33. In this depth-expansion example, B1 represents Bank #1 and B2 is Bank #2; each bank consists of one Cypress CY7C0851V/CY7C0851AV/CY7C0852V/CY7C0852AV
device from this data sheet. ADDRESS(B1) = ADDRESS(B2).
34. ADS = CNTEN= B0 – B3 = OE = LOW; MRST = CNTRST = CNT/MSK = HIGH.
35. Output state (HIGH, LOW, or high-impedance) is determined by the previous cycle control signals.
36. During “No Operation,” data in memory at the selected address may be corrupted and should be rewritten to ensure data integrity.
37. CE0 = OE = B0 – B3 = LOW; CE1 = R/W = CNTRST = MRST = HIGH.
38. CE0 = B0 – B3 = R/W = LOW; CE1 = CNTRST = MRST = CNT/MSK = HIGH. When R/W first switches low, since OE = LOW, the Write operation cannot be completed
(labelled as no operation). One clock cycle is required to three-state the I/O for the Write operation on the next rising edge of CLK.
Document Number: 38-06070 Rev. *L
Page 20 of 39
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CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Switching Waveforms (continued)
Figure 12. Read-to-Write-to-Read (OE Controlled) [39, 40, 41, 42]
tCH2
tCYC2
tCL2
CLK
CE
tSC
tHC
tSW tHW
R/W
tSW
tHW
An
An+1
An+2
An+3
An+4
An+5
ADDRESS
tSA
tHA
tSD tHD
Dn+2
DATAIN
Dn+3
tCD2
DATAOUT
tCD2
tCD2
Qn
Qn+1
Qn+4
tOHZ
OE
READ
WRITE
READ
Figure 13. Read with Address Counter Advance
tCH2
[41]
tCYC2
tCL2
CLK
tSA
ADDRESS
tHA
An
tSAD
tHAD
ADS
tSAD
tHAD
tSCN
tHCN
CNTEN
tSCN
DATAOUT
tHCN
Qx–1
READ
EXTERNAL
ADDRESS
tCD2
Qx
Qn
tDC
READ WITH COUNTER
Qn+1
COUNTER HOLD
Qn+2
Qn+3
READ WITH COUNTER
Notes
39. Addresses do not have to be accessed sequentially since ADS = CNTEN = VIL with CNT/MSK = VIH constantly loads the address on the rising edge of the CLK.
Numbers are for reference only
40. Output state (HIGH, LOW, or high-impedance) is determined by the previous cycle control signals.
41. CE0 = OE = B0 – B3 = LOW; CE1 = R/W = CNTRST = MRST = HIGH.
42. CE0 = B0 – B3 = R/W = LOW; CE1 = CNTRST = MRST = CNT/MSK = HIGH. When R/W first switches low, since OE = LOW, the Write operation cannot be completed
(labelled as no operation). One clock cycle is required to three-state the I/O for the Write operation on the next rising edge of CLK.
Document Number: 38-06070 Rev. *L
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Switching Waveforms (continued)
Figure 14. Write with Address Counter Advance [43]
tCH2
tCYC2
tCL2
CLK
tSA
tHA
An
ADDRESS
INTERNAL
ADDRESS
An
tSAD
tHAD
tSCN
tHCN
An+1
An+2
An+3
An+4
ADS
CNTEN
Dn
DATAIN
tSD
Dn+1
tHD
WRITE EXTERNAL
ADDRESS
Dn+1
WRITE WITH
COUNTER
Dn+2
Dn+3
WRITE COUNTER
HOLD
Dn+4
WRITE WITH COUNTER
Figure 15. Disabled to Read-to-Read to Read-to-Write
tCL2
tCYC2
tCH2
CLK
tSC
tHC
CE
tSW
tHW
R/W
tSW tHW
An
ADDRESS
tHA
tSA
tHA
tSA
An+1
An+4
An+3
An+2
OE
tSD
DATAIN
tHD
Dn+3
tCD2
DATAOUT
Qn
DISABLED
READ
READ
Qn+1
READ
Qn+2
WRITE
READ
Note
43. CE0 = B0 – B3 = R/W = LOW; CE1 = CNTRST = MRST = CNT/MSK = HIGH. When R/W first switches low, since OE = LOW, the Write operation cannot be completed
(labelled as no operation). One clock cycle is required to three-state the I/O for the Write operation on the next rising edge of CLK.
Document Number: 38-06070 Rev. *L
Page 22 of 39
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CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Switching Waveforms (continued)
Figure 16. Disabled to Write- to- Read to Write-to-Read
tCL2
tCYC2
tCH2
CLK
tSC tHC
CE
tHW
tSW
R/W
tSA
tHA
ADDRESS
An
An+4
An+3
An+2
An+1
tOE
OE
tSD tHD
DATAIN
Dn
Dn+2
tCD2
Qn+3
Qn+1
DATAOUT
DISABLED
WRITE
READ
READ
WRITE
READ
Figure 17. Disabled-to-Read to Disabled-to-Write
tCL2
tCYC2
tCH2
CLK
tSC tHC
CE
R/W
tSW tHW
ADDRESS
tSA
An+4
An+3
An+2
An+1
An
tHA
tOE
OE
tOHZ
tSD tHD
DATAIN
Dn+2
tCD2
DATAOUT
Qn+3
Qn
DISABLED
Document Number: 38-06070 Rev. *L
READ
DISABLED
WRITE
READ
READ
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Switching Waveforms (continued)
Figure 18. Read-to-Readback to Read-to-Read (R/W = HIGH)
tCL2
tCYC2
tCH2
CLK
tHAD
tSAD
ADS
CNTEN
tSCN tHCN
tSA
An+1
ADDRESS
COUNTER
INTERNAL
ADDRESS
tHA
An
An+1
An+2
An+3
An+4
OE
DATAOUT
Qn+1
READ
INCREMENT
Document Number: 38-06070 Rev. *L
NO OPERATION
READBACK
INCREMENT
Qn+3
Qn+2
READ
READ
INCREMENT
READ
INCREMENT
Page 24 of 39
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Switching Waveforms (continued)
Figure 19. Counter Reset [44, 45, 46]
tCYC2
tCH2 tCL2
CLK
tSA
INTERNAL
ADDRESS
Ax
tSW
tHW
tSD
tHD
An
1
0
Ap
Am
An
ADDRESS
tHA
Ap
Am
R/W
ADS
CNTEN
tSRST tHRST
CNTRST
DATAIN
D0
tCD2
tCD2
[46]
DATAOUT
Q0
COUNTER
RESET
WRITE
ADDRESS 0
tCKLZ
READ
ADDRESS 0
READ
ADDRESS 1
Q1
READ
ADDRESS An
Qn
READ
ADDRESS Am
Notes
44. CE0 = B0–B3 = LOW; CE1 = MRST = CNT/MSK = HIGH.
45. No dead cycle exists during counter reset. A Read or Write cycle may be coincidental with the counter reset.
46. Retransmit happens if the counter remains in increment mode after it wraps to initially loaded value.
Document Number: 38-06070 Rev. *L
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Switching Waveforms (continued)
Figure 20. Readback State of Address Counter or Mask Register [47, 48, 49, 50]
tCYC2
tCH2 tCL2
CLK
tCA2 or tCM2
tSA tHA
EXTERNAL
ADDRESS
A0–A16
An*
An
INTERNAL
ADDRESS
An+1
An
An+2
An+4
An+3
tSAD tHAD
ADS
tSCN tHCN
CNTEN
tCD2
DATAOUT
Qx-2
LOAD
EXTERNAL
ADDRESS
tCKHZ
Qx-1
Qn
READBACK
COUNTER
INTERNAL
ADDRESS
INCREMENT
tCKLZ
Qn+1
Qn+2
Qn+3
Notes
47. CE0 = OE = B0 – B3 = LOW; CE1 = R/W = CNTRST = MRST = HIGH.
48. Address in output mode. Host must not be driving address bus after tCKLZ in next clock cycle.
49. Address in input mode. Host can drive address bus after tCKHZ.
50. An * is the internal value of the address counter (or the mask register depending on the CNT/MSK level) being Read out on the address lines.
Document Number: 38-06070 Rev. *L
Page 26 of 39
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Switching Waveforms (continued)
Figure 21. Left_Port (L_Port) Write to Right_Port (R_Port) Read [51, 52, 53]
tCH2
tCYC2
tCL2
CLKL
tHA
tSA
L_PORT
ADDRESS
An
tSW
tHW
R/WL
tCKHZ
tSD
L_PORT
DATAIN
CLKR
tHD
tCKLZ
Dn
tCYC2
tCL2
tCCS
tCH2
tSA
R_PORT
ADDRESS
tHA
An
R/WR
tCD2
R_PORT
Qn
DATAOUT
tDC
Notes
51. CE0 = OE = ADS = CNTEN = B0 – B3 = LOW; CE1 = CNTRST = MRST = CNT/MSK = HIGH.
52. This timing is valid when one port is writing, and other port is reading the same location at the same time. If tCCS is violated, indeterminate data is Read out.
53. If tCCS < minimum specified value, then R_Port is Read the most recent data (written by L_Port) only (2 * tCYC2 + tCD2) after the rising edge of R_Port's clock.
If tCCS > minimum specified value, then R_Port is Read the most recent data (written by L_Port) (tCYC2 + tCD2) after the rising edge of R_Port's clock.
Document Number: 38-06070 Rev. *L
Page 27 of 39
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Switching Waveforms (continued)
Figure 22. Counter Interrupt and Retransmit [54, 55, 56, 57, 58]
tCH2
tCYC2
tCL2
CLK
tSCM
tHCM
CNT/MSK
ADS
CNTEN
COUNTER
INTERNAL
ADDRESS
1FFFC
1FFFD
1FFFE
tSCINT
1FFFF
Last_Loaded
Last_Loaded +1
tRCINT
CNTINT
Notes
54. Retransmit happens if the counter remains in increment mode after it wraps to initially loaded value
55. CE0 = OE = B0–B3 = LOW; CE1 = R/W = CNTRST = MRST = HIGH.
56. CNTINT is always driven.
57. CNTINT goes LOW when the unmasked portion of the address counter is incremented to the maximum value.
58. The mask register assumed to have the value of 1FFFFh.
Document Number: 38-06070 Rev. *L
Page 28 of 39
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Switching Waveforms (continued)
Figure 23. MailBox Interrupt Timing [59, 60, 61, 62, 63]
tCH2
tCYC2
tCL2
CLKL
tSA
L_PORT
ADDRESS
tHA
3FFFF
An+1
An
An+2
An+3
tSINT
tRINT
INTR
tCH2
tCYC2
tCL2
CLKR
tSA
R_PORT
ADDRESS
Am
tHA
Am+1
3FFFF
Am+3
Am+4
Notes
59. CE0 = OE = ADS = CNTEN = LOW; CE1 = CNTRST = MRST = CNT/MSK = HIGH.
60. Address “3FFFF” is the mailbox location for R_Port of a 9M device.
61. L_Port is configured for Write operation, and R_Port is configured for Read operation.
62. At least one byte enable (B0 – B3) is required to be active during interrupt operations.
63. Interrupt flag is set with respect to the rising edge of the Write clock, and is reset with respect to the rising edge of the Read clock.
Document Number: 38-06070 Rev. *L
Page 29 of 39
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CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Table 3. Read/Write and Enable Operation (Any Port) [66, 67, 64, 65]
Inputs
OE
Operation
CE0
CE1
R/W
DQ0–DQ35
X
H
X
X
High Z
Deselected
X
X
L
X
High Z
Deselected
X
L
H
L
DIN
Write
L
L
H
H
DOUT
Read
L
H
X
High Z
Outputs disabled
H
CLK
Outputs
X
Notes
64. OE is an asynchronous input signal.
65. When CE changes state, deselection and Read happen after one cycle of latency.
66. 9 M device has 18 address bits, 4M device has 17 address bits, and 2 M device has 16 address bits.
67. “X” = “Don’t Care”, “H” = HIGH, “L” = LOW.
Document Number: 38-06070 Rev. *L
Page 30 of 39
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CY7C0853V/CY7C0853AV
Ordering Information
Cypress offers other versions of this type of product in many different configurations and features. The following table contains only
the list of parts that are currently available. For a complete listing of all options, visit the Cypress website at http://www.cypress.com
and refer to the product summary page at http://www.cypress.com/products or contact your local sales representative.
Cypress maintains a worldwide network of offices, solution centers, manufacturer's representatives and distributors. To find the office
closest to you, visit us at http://www.cypress.com/go/datasheet/offices.
256 K × 36 (9 M) 3.3 V Synchronous CY7C0853V/CY7C0853AV Dual-Port SRAM
Speed
(MHz)
133
100
Ordering Code
CY7C0853V-133BBI
Package
Diagram
Package Type
51-85146 172-ball BGA (15 × 15 × 1.6 mm) with 1 mm pitch
CY7C0853V-133BBXI
172-ball BGA (15 × 15 × 1.6 mm) with 1 mm pitch (Pb-free)
CY7C0853V-133BBC
172-ball BGA (15 × 15 × 1.6 mm) with 1 mm pitch
CY7C0853AV-100BBI
51-85146 172-ball BGA (15 × 15 × 1.6 mm) with 1 mm pitch
CY7C0853V-100BBC
172-ball BGA (15 × 15 × 1.6 mm) with 1 mm pitch
Operating
Range
Industrial
Commercial
Industrial
Commercial
128 K × 36 (4 M) 3.3 V Synchronous CY7C0852V/CY7C0852AV Dual-Port SRAM
Speed
(MHz)
167
133
Ordering Code
Package
Diagram
Package Type
CY7C0852V-167BBC
51-85114 172-ball BGA (15 × 15 × 1.25 mm) with 1 mm pitch
CY7C0852AV-167AXC
51-85132 176-pin TQFP (24 × 24 × 1.4 mm) (Pb-free)
CY7C0852AV-133AXC
51-85132 176-pin TQFP (24 × 24 × 1.4 mm) (Pb-free)
CY7C0852AV-133BBI
51-85114 172-ball BGA (15 × 15 × 1.25 mm) with 1 mm pitch
CY7C0852AV-133AXI
51-85132 176-pin TQFP (24 × 24 × 1.4 mm) (Pb-free)
CY7C0852V-133BBC
51-85114 172-ball BGA (15 × 15 × 1.25 mm) with 1 mm pitch
CY7C0852V-133BBI
172-ball BGA (15 × 15 × 1.25 mm) with 1 mm pitch
Operating
Range
Commercial
Industrial
Commercial
Industrial
64 K × 36 (2 M) 3.3 V Synchronous CY7C0851V/CY7C0851AV Dual-Port SRAM
Speed
(MHz)
167
Ordering Code
CY7C0851V-167BBC
CY7C0851AV-167BBXC
133
Package
Diagram
Package Type
51-85114 172-ball BGA (15 × 15 × 1.25 mm) with 1 mm pitch
Commercial
172-ball BGA (15 × 15 × 1.25 mm) with 1 mm pitch (Pb-free)
CY7C0851AV-133AXI
51-85132 176-pin TQFP (24 × 24 × 1.4 mm) (Pb-free)
CY7C0851AV-133BBI
51-85114 172-ball BGA (15 × 15 × 1.25 mm) with 1 mm pitch
Document Number: 38-06070 Rev. *L
Operating
Range
Industrial
Page 31 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Ordering Code Definitions
CY 7
C
0
8
5
X
X - XXX XX X
X
Temperature Range: X = I or C
I = Industrial; C = Commercial
X = Pb-free (RoHS Compliant)
Package Type: X = BB or A
BB = 172-ball BGA
A = 176-pin TQFP
Speed Grade: XXX = 100 MHz or 133 MHz or 167 MHz
X = V or AV
V or AV = 3.3 V
Depth: X = 1 or 2 or 3
1 = 64 K
2 = 128 K
3 = 256 K
Width: 5 = × 36
Family Code: 8 = Synchronous
Port: 0 = Dual Port
Technology Code: C = CMOS
Marketing Code: 7 = SRAM
Company ID: CY = Cypress
Document Number: 38-06070 Rev. *L
Page 32 of 39
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Package Diagrams
Figure 24. 172-ball FBGA (15 × 15 × 1.6 mm) BB172SD (For Single or Stacked Die) Package Outline, 51-85146
51-85146 *D
Document Number: 38-06070 Rev. *L
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Package Diagrams (continued)
Figure 25. 172-ball FBGA (15 × 15 × 1.25 mm) BB172 Package Outline, 51-85114
51-85114 *D
Document Number: 38-06070 Rev. *L
Page 34 of 39
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Package Diagrams (continued)
Figure 26. 176-pin TQFP (24 × 24 × 1.4 mm) A176S Package Outline, 51-85132
51-85132 *B
Document Number: 38-06070 Rev. *L
Page 35 of 39
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Acronyms
Acronym
Document Conventions
Description
CMOS
complementary metal oxide semiconductor
FBGA
fine-pitch ball grid array
I/O
input/output
JTAG
joint test action group
SRAM
static random access memory
TCK
test clock input
TDI
test data input
TDO
test data output
TQFP
thin quad flat pack
Document Number: 38-06070 Rev. *L
Units of Measure
Symbol
Unit of Measure
°C
degree Celsius
MHz
megahertz
µA
microampere
mA
milliampere
mV
millivolt
ns
nanosecond

ohm
pF
picofarad
V
volt
W
watt
Page 36 of 39
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Document History Page
Document Title: CY7C0851V/CY7C0851AV/CY7C0852V/CY7C0852AV/CY7C0853V/CY7C0853AV,
FLEx36™ 3.3 V 32 K / 64 K / 128 K / 256 K × 36 Synchronous Dual-Port RAM
Document Number: 38-06070
Rev.
ECN No.
Submission
Date
Orig. of
Change
Description of Change
**
127809
08/04/03
SPN
This data sheet has been extracted from another data sheet: The 2 M / 4 M /
9 M data sheet. The following changes have been made from the original as
pertains to this device:
Updated capacitance values
Updated “Read-to-Write-to-Read (OE Controlled)” waveform
Revised static discharge voltage
Corrected 0853 pins L3 and L12
Added discussion of Pause/Restart for JTAG boundary scan
Power up requirements added to Maximum Ratings information
Revised tCD2, tOE, tOHZ, tCKHZ, tCKLZ for the CY7C0853V to 4.7 ns
Updated ICC numbers
Updated tHA, tHB, tHD for -100 speed
Separated out from the 4 M data sheet
Added 133 MHz Industrial device to Ordering Information table
*A
210948
See ECN
YDT
Changed mailbox addresses from 1FFFE and 1FFFF to 3FFFE and 3FFFF.
*B
216190
See ECN
YDT /
DCON
*C
231996
See ECN
YDT
Updated Functional Description (Removed “A particular port can write to a
certain location while another port is reading that location.”).
*D
238938
See ECN
WWZ
Merged 0853 (9 M × 36) with 0852 (4 M × 36) and 0851 (2 M × 36), add 0850
(1 M × 36), to the data sheet.
Added Product Selection Guide.
Added JTAG ID code for 1 M device.
Updated Scan Registers Sizes (Added Note 18 and referred the same note in
the Bit Size ‘n’ of Bondary Scan).
Updated boundary scan section.
Updated function description for the merge and addition.
*E
329122
See ECN
SPN
Updated Ordering Information (Updated Marketing part numbers).
*F
389877
See ECN
KGH
Updated Read-to-Write-to-Read timing diagram to reflect accurate bus
turnaround scheme.
Added ISB5
Changed tRSCNTINT to 10 ns
Changed tRSF to 10 ns
Added figure Disabled-to-Read-to-Read-to-Read-to-Write
Added figure Disabled-to-Write-to-Read-to-Write-to-Read
Added figure Disabled-to-Read-to-Disabled-to-Write
Added figure Read-to-Readback-to-Read-to-Read (R/W = HIGH)
Updated Read-to-Write-to-Read timing diagram to correct the data out
schemes
Updated Disabled-to-Read-to-Read-to-Read-to-Write timing diagram to
correct the chip enable, data in, and data out schemes
Updated Disabled-to-Write-to-Read-to-Write-to-Read timing diagram to
correct the chip enable and output enable schemes
Updated Disabled-to-Read-to-Disabled-to-Write timing diagram to correct the
chip enable and output enable schemes
*G
391597
See ECN
SPN
Updated counter reset section to reflect mirror register behavior
*H
2544945
07/29/08
VKN /
AESA
Document Number: 38-06070 Rev. *L
Corrected Revision of Document. CMS does not reflect this rev change.
Updated Ordering Information (Updated part numbers).
Updated in new template.
Page 37 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Document History Page (continued)
Document Title: CY7C0851V/CY7C0851AV/CY7C0852V/CY7C0852AV/CY7C0853V/CY7C0853AV,
FLEx36™ 3.3 V 32 K / 64 K / 128 K / 256 K × 36 Synchronous Dual-Port RAM
Document Number: 38-06070
Rev.
ECN No.
Submission
Date
Orig. of
Change
*I
2897087
03/22/10
RAME
Updated Ordering Information (Removed obsolete parts from ordering
information table).
Updated Package Diagrams.
*J
3093275
11/23/2010
ADMU
Added information for parts CY7C0851V/CY7C0852V/CY7C0853V across the
document.
Added Contents.
Updated Ordering Information (Added new part CY7C0851AV-133BBI in the
ordering information table) and added Ordering Code Definitions.
Added Acronyms and Units of Measure.
Updated as per new template.
*K
3402163
10/12/2011
ADMU
Updated Ordering Information (Removed pruned parts
CY7C0853AV-100BBC, CY7C0853AV-133BBC).
Updated Package Diagrams.
*L
3698945
08/07/2012
SMCH
Updated title to read as “CY7C0851V/CY7C0851AV/CY7C0852V/
CY7C0852AV/CY7C0853V/CY7C0853AV,
FLEx36™ 3.3 V 32 K / 64 K / 128 K / 256 K × 36 Synchronous Dual-Port RAM”.
Updated Features (Removed CY7C0850AV related information).
Updated Functional Description (Removed CY7C0850AV related information).
Updated Product Selection Guide (Removed CY7C0850AV related
information).
Updated Pin Configurations (Removed CY7C0850AV related information).
Updated Pin Definitions (Removed CY7C0850AV related information).
Updated Mailbox Interrupts (Removed CY7C0850AV related information).
Updated Address Counter and Mask Register Operations (Removed
CY7C0850AV related information).
Updated IEEE 1149.1 Serial Boundary Scan (JTAG) (Removed CY7C0850AV
related information).
Updated Identification Register Definitions (Removed CY7C0850AV related
information).
Updated Electrical Characteristics (Removed CY7C0850AV related
information).
Updated Capacitance (Removed CY7C0850AV related information).
Updated Switching Characteristics (Removed CY7C0850AV related
information).
Updated Package Diagrams (Added another spec 51-85146 for 172-ball BGA
package, spec 51-85132 for 176-pin TQFP package (Changed revision from
*A to *B)).
Document Number: 38-06070 Rev. *L
Description of Change
Page 38 of 39
CY7C0851V/CY7C0851AV
CY7C0852V/CY7C0852AV
CY7C0853V/CY7C0853AV
Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office
closest to you, visit us at Cypress Locations.
Products
Automotive
Clocks & Buffers
Interface
Lighting & Power Control
PSoC Solutions
cypress.com/go/automotive
cypress.com/go/clocks
psoc.cypress.com/solutions
cypress.com/go/interface
PSoC 1 | PSoC 3 | PSoC 5
cypress.com/go/powerpsoc
cypress.com/go/plc
Memory
cypress.com/go/memory
PSoC
cypress.com/go/psoc
Touch Sensing
cypress.com/go/touch
USB Controllers
Wireless/RF
cypress.com/go/USB
cypress.com/go/wireless
© Cypress Semiconductor Corporation, 2008-2012. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of
any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for
medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as
critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems
application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign),
United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of,
and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress
integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without
the express written permission of Cypress.
Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not
assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where
a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer
assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
Document Number: 38-06070 Rev. *L
Revised August 7, 2012
All products and company names mentioned in this document may be the trademarks of their respective holders.
Page 39 of 39
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