Cypress CYD04S72V-167BBC Flex72 3.3 v 64 k/128 k/256 k x 72 synchronous dual-port ram Datasheet

CYD04S72V
CYD09S72V
CYD18S72V
FLEx72™ 3.3 V 64 K/128 K/256 K × 72
Synchronous Dual-Port RAM
Functional Description
Features
■
True dual-ported memory cells that allow simultaneous access
of the same memory location
■
Synchronous pipelined operation
■
Family of 4 Mbit, 9 Mbit, and 18 Mbit devices
■
Pipelined output mode allows fast operation
■
0.18-micron complmentary 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
■
484-ball fine-pitch ball grid array (FBGA) (1-mm pitch)
■
Pb-free packaging available
■
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
Cypress offers a migration path for all devices to the
next-generation devices in the Dual-Port family with a compatible
footprint. Please contact Cypress Sales for more details
■
Seamless migration to next generation dual-port family
.
The FLEx72 family includes 4 Mbit, 9 Mbit and 18 Mbit 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 set-up and hold time.
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 will increment 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 will power
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 CYD18S72V device have limited features. Please see
Table 3 on page 8 for details.
Seamless Migration to Next-Generation Dual-Port
Family
Table 1. Product Selection Guide
4-Mbit
(64K x 72)
9-Mbit
(128K x 72)
18-Mbit
(256K x 72)
CYD04S72V
CYD09S72V
CYD18S72V
Max. speed (MHz)
167
133
133
Max. access time—clock to data (ns)
4.0
4.4
5.0
Density
Part number
Typical operating current (mA)
Package
Cypress Semiconductor Corporation
Document Number : 38-06069 Rev. *L
•
225
350
410
484-ball FBGA
23 mm x 23 mm
484-ball FBGA
23 mm x 23 mm
484-ball FBGA
23 mm x 23 mm
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised May 25, 2011
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Logic Block Diagram[1]
FTSELL
FTSELR
CONFIG Block
PORTST[1:0]L
CONFIG Block
PORTST[1:0]R
DQ[71:0]L
BE [7:0]L
CE0L
CE1L
OEL
IO
Control
IO
Control
DQ [71:0]R
BE [7:0]R
CE0R
CE1R
OER
R/WR
R/WL
Dual-Ported Array
BUSYL
A [17:0]L
CNT/MSKL
ADSL
CNTENL
CNTRSTL
RETL
CNTINTL
CL
Arbitration Logic
Address &
Counter Logic
BUSYR
Address &
Counter Logic
WRPL
A [17:0]R
CNT/MSKR
ADSR
CNTENR
CNTRSTR
RETR
CNTINTR
CR
WRPR
JTAG
TRST
TMS
TDI
TDO
TCK
RESET
LOGIC
MRST
READYR
LowSPDR
Mailboxes
INTL
INTR
READYL
LowSPDL
Note
1. CYD04S72V have 16 address bits, CYD09S72V have 17 address bits and CYD18S72V have 18 bits.
Document Number : 38-06069 Rev. *L
Page 2 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Contents
Pin Configuration ............................................................. 4
Pin Definitions .................................................................. 5
Master Reset ............................................................... 7
Mailbox Interrupts ........................................................ 7
Address Counter and Mask Register Operations......... 8
Counter Reset Operation ............................................ 8
Counter Load Operation .............................................. 8
Counter Increment Operation ...................................... 9
Counter Hold Operation .............................................. 9
Counter Interrupt ......................................................... 9
Counter Readback Operation ...................................... 9
Retransmit ................................................................... 9
Mask Reset Operation ................................................. 9
Mask Load Operation .................................................. 9
Mask Readback Operation .......................................... 9
Counting by Two ......................................................... 9
IEEE 1149.1 Serial Boundary Scan (JTAG) ................... 11
Performing a TAP Reset ........................................... 11
Performing a Pause/Restart ...................................... 11
Boundary Scan Hierarchy for FLEx72 Family ........... 11
Document Number : 38-06069 Rev. *L
Maximum Ratings............................................................ 13
Operating Range ............................................................. 13
Electrical Characteristics Over the Operating Range . 13
Capacitance ..................................................................... 14
AC Test Load and Waveforms ....................................... 14
Switching Characteristics Over the Operating Range 14
JTAG Timing Characteristics ........................................ 16
Switching Waveforms .................................................... 16
Ordering Information ...................................................... 26
Ordering Code Definitions ......................................... 26
Package Diagram ............................................................ 27
Acronyms ........................................................................ 28
Document Conventions ................................................. 28
Units of Measure ....................................................... 28
Document History Page ................................................. 29
Sales, Solutions, and Legal Information ...................... 30
Worldwide Sales and Design Support ....................... 30
Products .................................................................... 30
PSoC Solutions ......................................................... 30
Page 3 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Pin Configuration
484-ball BGA
Top View
CYD04S72V/CYD09S72V/CYD18S72V
1
A
NC
2
3
DQ61L DQ59L
4
B
DQ63L DQ62L DQ60L
C
DQ65L DQ64L
VSS
VSS
DQ67L DQ66L
VSS
VSS
D
E
F
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
21
22
NC
DQ58L DQ55L DQ52L DQ49L DQ46L DQ43L DQ40L DQ37L DQ37R DQ40R DQ43R DQ46R DQ49R DQ52R DQ55R DQ58R DQ60R DQ62R DQ63R
DQ56L DQ53L DQ50L DQ47L DQ44L DQ41L DQ38L DQ38R DQ41R DQ44R DQ47R DQ50R DQ53R DQ56R
VSS
NC [2, 5] NC [2, 5] VSS LOWSP PORTS NC [2, 5] BUSYL CNTINT PORTS
[2, 5]
DL[2,4] TD0L
L
TD1L
[2,4]
DQ69L DQ68L VDDIOL
13
DQ57L DQ54L DQ51L DQ48L DQ45L DQ42L DQ39L DQ36L DQ36R DQ39R DQ42R DQ45R DQ48R DQ51R DQ54R DQ57R DQ59R DQ61R
VSS
VSS
[10]
VDDIOL VDDIO VDDIO VDDIOL VDDIOL VTTL
L
L
VTTL
VTTL
VSS
VSS
DQ64R DQ65R
VSS
DQ66R DQ67R
NC [2, 5] NC [2, 5]
VSS
VSS
VDDIO VDDIO VDDIO VDDIOR
R
R
R
NC
VSS
NC
[2, 4]
VDDIOR DQ68R DQ69R
DQ71L DQ70L CE1L[8] CE0L [9] VDDIOL VDDIOL VDDIO VDDIO VDDIOL VCORE VCORE VCORE VCORE VDDIO VDDIO VDDIO VDDIOR VDDIOR CE0R [9] CE1R[8] DQ70R DQ71R
L
L
R
R
R
G
A0L
A1L
RETL[2,3] BE4L
VDDIOL VDDIOL VREFL
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
H
A2L
A3L
WRPL[2,
BE5L
VDDIOL VDDIOL
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VDDIOR VDDIOR BE5R WRPR[2,
A3R
A2R
J
A4L
A5L
READYL BE6L
VDDIOL VDDIOL
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VDDIOR VDDIOR BE6R READYR A5R
A4R
K
A6L
A7L
NC[2,5]
BE7L
VTTL
VCORE
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VCORE VDDIOR BE7R
L
A8L
A9L
CL
OEL
VTTL
VCORE
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VCORE
VTTL
M
A10L
A11L
VSS
BE3L
VTTL
VCORE
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VCORE
N
A12L
A13L ADSL [9]
BE2L
VDDIOL VCORE
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VCORE
P
A14L
A15L CNT/MS
KL[8]
BE1L
VDDIOL VDDIOL
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
R
A16L
A17L CNTENL BE0L
VDDIOL VDDIOL
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
T
A18L
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
U
V
W
Y
AA
AB
[6]
[2,5]
3]
[2, 5]
[7]
[9]
NC
CNTRST
L [8]
DQ35L DQ34L
R/WL
INTL
[2, 4]
VDDIOL VDDIOL VREFL
[2, 4]
VREFR VDDIOR VDDIOR BE4R RETR[2,3 A1R
[2, 4]
]
3]
[2, 5]
NC[2,5]
A7R
A6R
OER
CR
A9R
A8R
VTTL
BE3R
VSS
A11R
A10R
VTTL
BE2R ADSR [9] A13R
A12R
VSS
VDDIOR VDDIOR BE1R CNT/MS A15R
KR[8]
A14R
VSS
VDDIOR VDDIOR BE0R CNTENR A17R
A16R
VREFR VDDIOR VDDIOR
[2, 4]
REVL VDDIOL VDDIOL VDDIO VDDIO VDDIOL VCORE VCORE VCORE VCORE VDDIO VDDIO VDDIO VDDIOR
[2,4]
L
L
R
R
R
NC
VDDIOL VDDIO VDDIO VDDIOL VTTL
L
DQ31L DQ30L
VSS
NC [2, 5] NC [2, 5] REVL[2, PORTS CNTINT BUSYR NC [2, 5] PORTS LOWSP VSS NC [2, 5] NC [2, 5]
4]
[2, 5]
TD1R
R
TD0R DR[2,4]
VSS
MRST
[2, 4]
DQ29L DQ28L
VSS
DQ27L DQ26L DQ24L
NC
DQ25L DQ23L
VSS
VTTL
[10]
INTR
VDDIOR REVR[2,4
]
[9]
[7]
CNTRST
R[8]
NC
[6]
A18R
[2,5]
R/WR DQ34R DQ35R
VTTL VDDIO VDDIO VDDIO VDDIO VDDIOR TRST[2, VDDIOR FTSELR DQ32R DQ33R
5]
[2,3]
R
R
R
R
DQ33L DQ32L FTSELL VDDIOL
[2,3]
A0R
VSS
TDI
TDO
DQ30R DQ31R
TMS
TCK
DQ28R DQ29R
[2,4]
DQ20L DQ17L DQ14L DQ11L DQ8L
DQ5L
DQ2L
DQ2R DQ5R
DQ8R DQ11R DQ14R DQ17R DQ20R
DQ22L DQ19L DQ16L DQ13L DQ10L DQ7L
DQ4L
DQ1L
DQ1R DQ4R
DQ7R DQ10R DQ13R DQ16R DQ19R DQ22R DQ24R DQ26R DQ27R
DQ21L DQ18L DQ15L DQ12L DQ9L
DQ3L
DQ0L
DQ0R DQ3R
DQ6R DQ9R DQ12R DQ15R DQ18R DQ21R DQ23R DQ25R
DQ6L
NC
Notes
2. This ball will represent a next generation Dual-Port feature. For more information about this feature, contact Cypress Sales.
3. Connect this ball to VDDIO. For more information about this next generation Dual-Port feature contact Cypress Sales.
4. Connect this ball to VSS. For more information about this next generation Dual-Port feature, contact Cypress Sales.
5. Leave this ball unconnected. For more information about this feature, contact Cypress Sales.
6. Leave this ball unconnected for a 64K x 72 configuration.
7. Leave this ball unconnected for 128K x 72 and 64K x72 configurations.
8. These balls are not applicable for CYD18S72V device. They need to be tied to VDDIO.
9. These balls are not applicable for CYD18S72V device. They need to be tied to VSS.
10. These balls are not applicable for CYD18S72V device. They need to be no connected.
Document Number : 38-06069 Rev. *L
Page 4 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Pin Definitions
Left Port
Right Port
Description
A0L–A17L
A0R–A17R
BE0L–BE7L
BE0R–BE7R
Byte enable inputs. Asserting these signals enables Read and Write operations to the
corresponding bytes of the memory array.
BUSYL[11,12]
BUSYR[11,12]
Port busy output. When the collision is detected, a BUSY is asserted.
CL
CR
CE0L[13]
CE0R[13]
Active low chip enable input.
CE1L[14]
CE1R[14]
Active high chip enable input.
DQ0L–DQ71L
DQ0R–DQ71R
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.
LowSPDL[11,15]
LowSPDR[11,15]
Address inputs.
Input clock signal.
Data bus input/output.
Port low speed select input. When operating at less than 100 MHz, the LowSPD
disables the port DLL.
PORTSTD[1:0]L[11,15 PORTSTD[1:0]R[11,15 Port address/control/data i/o standard select input.
]
]
R/WL
R/WR
READYL[11,12]
READYR[11,12]
Port ready output. This signal will be asserted when a port is ready for normal
operation.
CNT/MSKL[14]
CNT/MSKR[14]
Port counter/mask select input. Counter control input.
ADSL[13]
ADSR[13]
CNTENL
[13]
CNTENR[13]
Read/write enable input. Assert this pin LOW to write to, or HIGH to Read from the
dual-port memory array.
Port counter address load strobe input. Counter control input.
Port counter enable input. Counter control input.
CNTRSTL[14]
CNTRSTR[14]
Port counter reset input. Counter control input.
CNTINTL[16]
CNTINTR[16]
Port counter interrupt output. This pin is asserted LOW when the unmasked portion
of the counter is incremented to all “1s”.
WRPL[11,17]
WRPR[11,17]
Port counter wrap input. After the burst counter reaches the maximum count, if WRP
is low, the unmasked counter bits will be set to 0. If high, the counter will be loaded with
the value stored in the mirror register.
RETL[11,17]
RETR[12,17]
Port counter retransmit input. Counter control input.
FTSELL[11,17]
FTSELR[11,17]
Flow-through select. Use this pin to select Flow-Through mode. When is de-asserted,
the device is in pipelined mode.
VREFL[11,15]
VREFR[11,15]
Port external high-speed io reference input.
Notes
11. This ball will represent a next generation Dual-Port feature. For more information about this feature, contact Cypress Sales.
12. Leave this ball unconnected. For more information about this feature, contact Cypress Sales.
13. These balls are not applicable for CYD18S72V device. They need to be tied to VSS.
14. These balls are not applicable for CYD18S72V device. They need to be tied to VDDIO.
15. Connect this ball to VSS. For more information about this next generation Dual-Port feature, contact Cypress Sales.
16. These balls are not applicable for CYD18S72V device. They need to be no connected.
17. Connect this ball to VDDIO. For more information about this next generation Dual-Port feature contact Cypress Sales
Document Number : 38-06069 Rev. *L
Page 5 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Pin Definitions (continued)
Left Port
Right Port
VDDIOL
VDDIOR
REV[18,19]L
REV[18,19]R
MRST
TRST[18,20]
Description
Port IO power supply.
Reserved pins for future features.
Master reset input. MRST is an asynchronous input signal and affects both ports. A
master reset operation is required at power-up.
JTAG reset input.
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 will be 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.
VCORE[21]
VTTL
Core power supply.
LVTTL power supply.
Notes
18. This ball will represent a next generation Dual-Port feature. For more information about this feature, contact Cypress Sales.
19. Connect this ball to VSS. For more information about this next generation Dual-Port feature, contact Cypress Sales
20. Leave this ball unconnected. For more information about this feature, contact Cypress Sales.
21. This family of Dual-Ports does not use VCORE, and these pins are internally NC. The next generation Dual-Port family, the FLEx72-E™, will use VCORE of 1.5 V or 1.8
V. Please contact local Cypress FAE for more information
Document Number : 38-06069 Rev. *L
Page 6 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Master Reset
The FLEx72 family devices undergo a complete reset by taking
the MRST input LOW. MRST input can switch asynchronously to
the clocks. MRST initializes the internal burst counters to zero,
and the counter mask registers to all ones (completely
unmasked). MRST also forces the mailbox interrupt (INT) flags
and the Counter Interrupt (CNTINT) flags HIGH. MRST must be
performed on the FLEx72 family devices after power-up.
Mailbox Interrupts
The upper two memory locations may be used for message
passing and permit communications between ports. Table 2
shows the interrupt operation for both ports using 18 Mbit device
as an example. The highest memory location, 3FFFF is the
mailbox for the right port and 3FFFE is the mailbox for the left
port. Table 2.shows that in order to set the INTR flag, a write
operation by the left port to address 3FFFF will assert 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 will
reset 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 (i.e., it follows the clock edge of the writing port). Also, the
flag is reset in a flow-thru mode (i.e., 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 2. Interrupt Operation Example [22, 23, 24, 25]
Function
Left Port
Right Port
R/WL
CEL
A0L–17L
INTL
R/WR
CER
A0R–17R
INTR
Set Right INTR Flag
L
L
3FFFF
X
X
X
X
L
Reset Right INTR Flag
X
X
X
X
H
L
3FFFF
H
Set Left INTL Flag
X
X
X
L
L
L
3FFFE
X
Reset Left INTL Flag
H
L
3FFFE
H
X
X
X
X
Notes
22. CYD04S72V have 16 address bits, CYD09S72V have 17 address bits and CYD18S72V have 18 bits.
23. 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 will be out after the following CLK edge and will be three-stated after the next CLK edge.
24. OE is “Don’t Care” for mailbox operation.
25. At least one of BE0 or BE7 must be LOW.
Document Number : 38-06069 Rev. *L
Page 7 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Table 3. Address Counter and Counter Mask Register Control Operation (Any Port) [26,27]
CLK
X
MRST CNT/MSK CNTRST ADS CNTEN
Operation
Description
L
X
X
X
X
Master Reset
Reset address counter to all 0s and mask register
to all 1s
H
H
L
X
X
Counter Reset
Reset counter unmasked portion to all 0s
H
H
H
L
L
Counter Load
Load counter with external address value presented
on address lines
H
H
H
L
H
Counter Readback Read out counter internal value on address lines
H
H
H
H
L
Counter Increment Internally increment address counter value
H
H
H
H
H
Counter Hold
Constantly hold the address value for multiple clock
cycles
H
L
L
X
X
Mask Reset
Reset mask register to all 1s
H
L
H
L
L
Mask Load
Load mask register with value presented on the
address lines
H
L
H
L
H
Mask Readback
Read out mask register value on address lines
H
L
H
H
X
Reserved
Operation undefined
Address Counter and Mask Register Operations[28]
This section describes the features only apply to 4 Mbit and 9
Mbit devices, not to 18 Mbit device. Each port has a programmable burst address counter. The burst counter contains three
registers: a counter register, a mask register, and a mirror
register.
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, and Counter Reset
operations, and by the MRST.
Table 3 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 3
(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 will increment 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 will loop
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 and mirror registers are reset to
“0.” All masked bits remain unchanged. A Mask Reset followed
by a Counter Reset will reset the counter and mirror registers to
00000, as will master reset (MRST).
Counter Load Operation
The address counter and mirror registers are both loaded with
the address value presented at the address lines.
Notes
26. X” = “Don’t Care,” “H” = HIGH, “L” = LOW.
27. Counter operation and mask register operation is independent of chip enables.
28. The CYD04S72V has 16 address bits and a maximum address value of FFFF. The CYD09S72V has 17 address bits and a maximum address value of 1FFFF. The
CYD18S72V has 18 address bits and a maximum address value of 3FFFF.
Document Number : 38-06069 Rev. *L
Page 8 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
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 will wrap 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 will
return 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.[29]
An increment that results in one or more of the unmasked bits of
the counter being “0” will de-assert the counter interrupt flag. The
example in Figure 2 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 will start at address 8h. The
counter will increment 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.
Counter Interrupt
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.
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.”
Mask Load Operation
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.
Mask Readback Operation
The internal value of the mask register can be read out on the
address lines. Readback is pipelined; the address will be 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) will be three-stated. Figure 1 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 x72
devices as a 144-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 144-bit data in even memory locations, and the
other half in odd memory locations.
Counter Readback Operation
The internal value of the counter register can be read out on the
address lines. Readback is pipelined; the address will be 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) will be three-stated. Figure 1 shows
a block diagram of the operation.
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.
Note
29. CNTINT and CNTRST specs are guaranteed by design to operate properly at speed grade operating frequency when tied together.
Document Number : 38-06069 Rev. *L
Page 9 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Figure 1. Counter, Mask, and Mirror Logic Block Diagram[30]
CNT/MSK
CNTEN
Decode
Logic
ADS
CNTRST
MRST
Bidirectional
Address
Lines
Mask
Register
Counter/
Address
Register
Address
RAM
Decode
Array
CLK
From
Address
Lines
Load/Increment
17
Mirror
1
From
Mask
Register
From
Mask
From
Counter
Increment
Logic
Wrap
17
17
To Readback
and Address
Decode
0
0
17
Counter
1
17
17
Bit 0
+1
Wrap
Detect
1
+2
Wrap
0
1
17
0
To
Counter
Note
30. CYD04S72V have 16 address bits, CYD09S72V have 17 address bits and CYD18S72V have 18 bits.
Document Number : 38-06069 Rev. *L
Page 10 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Figure 2. Programmable Counter-Mask Register Operation[31, 32]
Example:
Load
Counter-Mask
Register = 3F
CNTINT
H
0 0
0s
216 215
H
X X
Xs
216 215
Max
Address
Register
L
H
1
1 1
1
X X
X X
216 215
IEEE 1149.1 Serial Boundary Scan (JTAG)[33]
The FLEx72 incorporates an IEEE 1149.1 serial boundary scan
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
FLEx72 family and may be performed while the device is
operating. An MRST must be performed on the FLEx72 after
power-up.
Performing a Pause/Restart
When a SHIFT-DR PAUSE-DR SHIFT-DR is performed the scan
chain will output the next bit in the chain twice. For example, if
the value expected from the chain is 1010101, the device will
output a 11010101. This extra bit will cause some testers to
report an erroneous failure for the FLEx72 in a scan test.
Therefore the tester should be configured to never enter the
PAUSE-DR state.
Unmasked Address
X 0 0
1
0 0
Xs
X 1
1
1
Mask
Register
bit-0
0
26 25 24 23 22 21 20
216 215
Max + 1
Address
Register
1 1
26 25 24 23 22 21 20
Masked Address
Load
Address
Counter = 8
0
1 1
1
Address
Counter
bit-0
26 25 24 23 22 21 20
Xs
X 0 0
1
0
0
0
26 25 24 23 22 21 20
registers. The circuity and operation of the DIE boundary scan
are described in detail below. The scan chain of each DIE is
connected serially to form the scan chain of the FLEx72 family
as shown in Figure 3. TMS and TCK are connected in parallel to
each DIE to drive all 4 TAP controllers in unison. In many cases,
each DIE will be supplied with the same instruction. In other
cases, it might be useful to supply different instructions to each
DIE. One example would be testing the device ID of one DIE
while bypassing the others.
Each pin of FLEx72 family is typically connected to multiple DIEs.
For connectivity testing with the EXTEST instruction, it is
desirable to check the internal connections between DIEs as well
as the external connections to the package. This can be
accomplished by merging the netlist of the devices with the
netlist of the user’s circuit board. To facilitate boundary scan
testing of the devices, Cypress provides the BSDL file for each
DIE, the internal netlist of the device, and a description of the
device scan chain. The user can use these materials to easily
integrate the devices into the board’s boundary scan
environment. Further information can be found in the Cypress
application note Using JTAG Boundary Scan with the
FLEx18/72TM Dual-Port SRAMs.
Boundary Scan Hierarchy for FLEx72 Family
Internally, the CYD04S72V and CYD09S72V have two DIEs
while CYD18S72V has four DIEs. Each DIE contains all the
circuitry required to support boundary scan testing. The circuitry
includes the TAP, TAP controller, instruction register, and data
Notes
31. CYD04S72V have 16 address bits, CYD09S72V have 17 address bits and CYD18S72V have 18 bits.
32. The “X” in this diagram represents the counter upper bits.
33. Boundary scan is IEEE 1149.1-compatible. See “Performing a Pause/Restart” for deviation from strict 1149.1 compliance.
Document Number : 38-06069 Rev. *L
Page 11 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Figure 3. Scan Chain
18 Mbit
4 Mbit/9 Mbit
TDO
TDO
TDO
D2
TDI
TDO
D4
TDI
TDO
D2
TDI
TDO
D1
TDI
TDO
D3
TDI
TDO
D1
TDI
TDI
TDI
Table 4. Identification Register Definitions
Instruction Field
Value
Revision number(31:28)
0h
Cypress device(27:12)
Description
Reserved for version number
C002h
Defines Cypress DIE number for CYD18S72V and
CYD09S72V
C001h
Defines Cypress DIE number for CYD04S72V
Cypress JDEC ID(11:1)
034h
ID register presence (0)
1
Allows unique identification of FLEx72 family device vendor
Indicates the presence of an ID register
Table 5. Scan Registers Sizes
Register Name
Bit Size
Instruction
4
Bypass
1
Identification
32
Boundary scan
n[34]
Table 6. Instruction Identification Codes
Instruction
Code
Description
EXTEST
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 FLEx72 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
NBSRST
1100
Resets the non-boundary scan logic. Places BYR between TDI and TDO
RESERVED
All other codes
Other combinations are reserved. Do not use other than the above
Note
34. See details in the device BSDL files.
Document Number : 38-06069 Rev. *L
Page 12 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Maximum Ratings[35]
Output current into outputs (LOW) .............................. 20 mA
Static discharge voltage........................................... > 2000 V
(Exceeding maximum ratings may shorten the useful life of the
device. User guidelines are not tested)
(JEDEC JESD22-A114-2000B)
Storage temperature............................... –65 °C to + 150 °C
Latch-up current ..................................................... > 200 mA
Ambient temperature with
power applied .......................................... –55 °C to + 125 °C
Operating Range
Ambient
Temperature
Supply voltage to ground potential ..............–0.5 V to + 4.6 V
Range
DC Voltage Applied to
Outputs in High-Z state........................ –0.5 V to VDD + 0.5 V
Commercial
Industrial
DC input voltage ............................. –0.5 V to VDD + 0.5 V[37]
VCORE[36]
VDD
0 °C to +70 °C 3.3 V ± 165 mV 1.8 V ± 100 mV
–40 °C to +85 °C 3.3 V ± 165 mV 1.8 V ± 100mV
Electrical Characteristics Over the Operating Range
Parameter
Description
Part No.
–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
VOH
Output HIGH voltage (VDD = Min., IOH =
–4.0 mA)
VOL
Output LOW voltage (VDD = Min., IOL= +4.0
mA)
VIH
Input HIGH voltage
VIL
Input LOW voltage
–
–
0.8
–
–
0.8
–
–
0.8
V
IOZ
Output leakage current
–10
–
10
–10
–
10
–10
–
10
A
IIX1
Input leakage current except TDI, TMS,
MRST
–10
–
10
–10
–
10
–10
–
10
A
IIX2
Input leakage current TDI, TMS, MRST
–0.1
–
1.0
–0.1
–
1.0
–0.1
–
1.0
mA
ICC
CYD04S72V
Operating current
(VDD = Max.,IOUT = 0 mA),
CYD09S72V
outputs disabled
CYD18S72V
–
225
300
–
–
–
–
–
–
mA
–
–
–
–
350
500
–
–
–
–
–
–
–
410
580
Standby current
CYD04S72V
(both ports TTL level)
CYD09S72V
CEL and CER  VIH, f = fMAX
–
90
115
–
–
–
–
–
Standby current
(one port TTL level)
CEL | CER  VIH, f = fMAX
CYD04S72V
–
160
210
–
CYD09S72V
–
–
–
–
Standby current (both ports CYD04S72V
CMOS level) CEL and CER
CYD09S72V
 VDD – 0.2V, f = 0
–
55
75
–
–
–
–
–
CYD04S72V
–
160
210
–
CYD09S72V
–
–
–
–
ISB5
Operating current (VDDIO CYD18S72V
= Max, Iout = 0 mA, f = 0)
outputs disabled
–
–
–
–
ICORE[36]
Core operating current for (VDD = Max.,
IOUT = 0 mA), outputs disabled
–
0
0
–
ISB1
ISB2
ISB3
ISB4
Standby current
(one port CMOS level)
CEL | CER  VIH, f = fMAX
105
266
150
380
–
315
450
mA
–
–
–
mA
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
mA
mA
mA
55
75
–
–
224
320
–
–
75
–
–
75
mA
0
–
0
0
mA
0
Notes
35. The voltage on any input or I/O pin can not exceed the power pin during power-up.
36. This family of Dual-Ports does not use VCORE, and these pins are internally NC. The next generation Dual-Port family, the FLEx72-E™, will use VCORE of 1.5 V or
1.8 V. Please contact local Cypress FAE for more information.
37. Pulse width < 20 ns.
Document Number : 38-06069 Rev. *L
Page 13 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Capacitance[38]
Part#
Parameter
Description
Test Conditions
TA = 25 °C, f = 1 MHz,
VDD = 3.3 V
Max
Unit
20
pF
10[39]
pF
CYD04S72V
CYD09S72V
CIN
Input capacitance
COUT
Output capacitance
CYD18S72V
CIN
Input capacitance
40
pF
COUT
Output capacitance
20
pF
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)
(b) Three-state Delay (Load 2)
3.0 V
ALL INPUT PULSES
R2 = 435 
90%
90%
10%
Vss
10%
< 2 ns
< 2 ns
Switching Characteristics Over the Operating Range
–167
Parameter
Description
–133
–100
CYD04S72V
CYD09S72V
CYD18S72V
CYD18S72V
Min
Max
Min
Max
Min
Max
Min
Max
Unit
–
167
–
133
–
133
–
100
MHz
fMAX2
Maximum operating frequency
tCYC2
Clock cycle time
6.0
–
7.5
–
7.5
–
10
–
ns
tCH2
Clock HIGH time
2.7
–
3.0
–
3.4
–
4.5
–
ns
tCL2
Clock LOW time
2.7
–
3.0
–
3.4
–
4.5
–
ns
[40]
Clock rise time
–
2.0
–
2.0
–
2.0
–
3.0
ns
tF[40]
Clock fall time
–
2.0
–
2.0
–
2.0
–
3.0
ns
tSA
Address set-up time
2.3
–
2.5
–
2.2
–
2.7
–
ns
tHA
Address hold time
0.6
–
0.6
–
1.0
–
1.0
–
ns
tSB
Byte select set-up time
2.3
–
2.5
–
2.2
–
2.7
–
ns
tHB
Byte select hold time
0.6
–
0.6
–
1.0
–
1.0
–
ns
tSC
Chip enable set-up time
2.3
–
2.5
–
NA
–
NA
–
ns
tHC
Chip enable hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tSW
R/W set-up time
2.3
–
2.5
–
2.2
–
2.7
–
ns
tHW
R/W hold time
0.6
–
0.6
–
1.0
–
1.0
–
ns
tSD
Input data set-up time
2.3
–
2.5
–
2.2
–
2.7
–
ns
tHD
Input data hold time
0.6
–
0.6
–
1.0
–
1.0
–
ns
tR
Notes
38. COUT also references CI/O.
39. Except INT and CNTINT which are 20 pF.
40. Except JTAG signal (tR and tF < 10 ns max).
Document Number : 38-06069 Rev. *L
Page 14 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Characteristics Over the Operating Range
(continued)
–167
Parameter
Description
–133
–100
CYD04S72V
CYD09S72V
CYD18S72V
CYD18S72V
Min
Max
Min
Max
Min
Max
Min
Max
Unit
tSAD
ADS set-up time
2.3
–
2.5
–
NA
–
NA
–
ns
tHAD
ADS hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tSCN
CNTEN set-up time
2.3
–
2.5
–
NA
–
NA
–
ns
tHCN
CNTEN hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tSRST
CNTRST set-up time
2.3
–
2.5
–
NA
–
NA
–
ns
tHRST
CNTRST hold time
0.6
–
0.6
–
NA
–
NA
–
ns
tSCM
CNT/MSK set-up 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
–
5.5
–
5.5
ns
tOLZ[41, 42]
OE to Low Z
0
–
0
–
0
–
0
–
ns
tOHZ[41, 42]
OE to High Z
0
4.0
0
4.4
0
5.5
0
5.5
ns
tCD2
Clock to data valid
–
4.0
–
4.4
–
5.0
–
5.2
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
tCKHZ[41, 42]
Clock HIGH to output High Z
0
4.0
0
4.4
0
4.7
0
5.0
ns
tCKLZ[41, 42]
Clock HIGH to output Low Z
1.0
4.0
1.0
4.4
1.0
4.7
1.0
5.0
ns
tSINT
Clock to INT set time
0.5
6.7
0.5
7.5
0.5
7.5
0.5
10
ns
tRINT
Clock to INT reset time
0.5
6.7
0.5
7.5
0.5
7.5
0.5
10
ns
tSCINT
Clock to CNTINT set time
0.5
5.0
0.5
5.7
NA
NA
NA
NA
ns
tRCINT
Clock to CNTINT reset time
0.5
5.0
0.5
5.7
NA
NA
NA
NA
ns
5.2
–
6.0
–
5.7
–
8.0
–
ns
Port to Port Delays
tCCS
Clock to clock skew
Master Reset Timing
tRS
Master reset pulse width
5.0
–
5.0
–
5.0
–
5.0
–
cycles
tRSS
Master reset set-up time
6.0
–
6.0
–
6.0
–
8.5
–
ns
tRSR
Master reset recovery time
5.0
–
5.0
–
5.0
–
5.0
–
cycles
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
41. This parameter is guaranteed by design, but is not production tested.
42. Test conditions used are Load 2.
Document Number : 38-06069 Rev. *L
Page 15 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
JTAG Timing Characteristics
Parameter
CYD04S72V
CYD09S72V
CYD18S72V
Description
–167/–133/–100
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 set-up to TCK clock rise
10
–
ns
tTMSH
TMS hold after TCK clock rise
10
–
ns
tTDIS
TDI set-up 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
Switching Waveforms
tTH
Test Clock
TCK
tTMSS
tTL
tTCYC
tTMSH
Test Mode Select
TMS
tTDIS
tTDIH
Test Data-In
TDI
Test Data-Out
TDO
tTDOX
tTDOV
Document Number : 38-06069 Rev. *L
Page 16 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Waveforms
(continued)
Figure 4. Master Reset
tRS
MRST
tRSF
ALL
ADDRESS/
DATA
LINES
tRSS
ALL
OTHER
INPUTS
tRSR
INACTIVE
ACTIVE
TMS
CNTINT
INT
TDO
Figure 5. Read Cycle[43, 44, 45, 46, 47]
tCH2
tCYC2
tCL2
CLK
CE
tSC
tHC
tSB
tHB
tSW
tSA
tHW
tHA
tSC
tHC
BE0–BE7
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
43. 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 will be out after the following CLK edge and will be three-stated after the next CLK edge.
44. OE is asynchronously controlled; all other inputs (excluding MRST and JTAG) are synchronous to the rising clock edge.
45. ADS = CNTEN = LOW, and MRST = CNTRST = CNT/MSK = HIGH.
46. The output is disabled (high-impedance state) by CE = VIH following the next rising edge of the clock.
47. 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 : 38-06069 Rev. *L
Page 17 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Waveforms
(continued)
tCH2
tCYC2
Figure 6. Bank Select Read[48, 49]
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
tDC
tCKLZ
A3
A2
tCKHZ
Q3
Q1
Q0
DATAOUT(B1)
tCD2
tCKHZ
A4
A5
tHC
tSC
CE(B2)
tSC
tCD2
tHC
tCKHZ
DATAOUT(B2)
tCD2
Q4
Q2
tCKLZ
Figure 7. Read-to-Write-to-Read (OE =
tCKLZ
LOW)[47, 50, 51, 52, 53]
tCH2 tCYC2tCL2
CLK
CE
tSC
tHC
tSW
tHW
R/W
tSW
tHW
An
ADDRESS
tSA
An+1
An+2
An+2
An+3
tSD tHD
tHA
DATAIN
An+2
tCD2
tDC
tCKHZ
Dn+2
Qn
DATAOUT
READ
NO OPERATION
WRITE
Notes
48. In this depth-expansion example, B1 represents Bank #1 and B2 is Bank #2; each bank consists of one Cypress FLEx72 device from this data sheet. ADDRESS(B1)
= ADDRESS(B2).
49. ADS = CNTEN = BE0 – BE7 = OE = LOW; MRST = CNTRST = CNT/MSK = HIGH.
50. Output state (HIGH, LOW, or high-impedance) is determined by the previous cycle control signals.
51. During “No Operation,” data in memory at the selected address may be corrupted and should be rewritten to ensure data integrity.
52. CE0 = OE = BE0 – BE7 = LOW; CE1 = R/W = CNTRST = MRST = HIGH.
53. CE0 = BE0 – BE7 = 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 : 38-06069 Rev. *L
Page 18 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Waveforms
(continued)
Figure 8. Read-to-Write-to-Read (OE Controlled)[54, 55, 56, 57]
tCH2
tCYC2
tCL2
CLK
CE
tSC
tHC
tSW tHW
R/W
ADDRESS
tSW
tHW
An
tSA
An+1
An+2
tHA
An+3
An+4
An+5
tSD tHD
Dn+2
DATAIN
Dn+3
tCD2
DATAOUT
tCD2
Qn
Qn+4
tOHZ
OE
READ
WRITE
READ
Figure 9. Read with Address Counter Advance[56]
tCH2
tCYC2
tCL2
CLK
tSA
ADDRESS
tHA
An
tSAD
tHAD
ADS
tSAD
tHAD
tSCN
tHCN
CNTEN
tSCN
DATAOUT
tHCN
Qx–1
tCD2
Qx
READ
EXTERNAL
ADDRESS
tDC
Qn
READ WITH COUNTER
Qn+1
COUNTER HOLD
Qn+2
Qn+3
READ WITH COUNTER
Notes
54. 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.
55. Output state (HIGH, LOW, or high-impedance) is determined by the previous cycle control signals.
56. CE0 = OE = BE0 – BE7 = LOW; CE1 = R/W = CNTRST = MRST = HIGH
57. CE0 = BE0 – BE7 = 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 : 38-06069 Rev. *L
Page 19 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Waveforms
(continued)
Figure 10. Write with Address Counter Advance [58]
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
tHD
WRITE EXTERNAL
ADDRESS
Dn+1
Dn+1
WRITE WITH
COUNTER
Dn+2
WRITE COUNTER
HOLD
Dn+3
Dn+4
WRITE WITH COUNTER
Note
58. CE0 = BE0 – BE7 = 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 : 38-06069 Rev. *L
Page 20 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Waveforms
(continued)
Figure 11. Counter Reset [59, 60]
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
[72]
DATAOUT
Q0
COUNTER
RESET
WRITE
ADDRESS 0
tCKLZ
READ
ADDRESS 0
READ
ADDRESS 1
Q1
READ
ADDRESS An
Qn
READ
ADDRESS Am
Notes
59. CE0 = BE0 – BE7 = LOW; CE1 = MRST = CNT/MSK = HIGH.
60. No dead cycle exists during counter reset. A Read or Write cycle may be coincidental with the counter reset.
Document Number : 38-06069 Rev. *L
Page 21 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Waveforms
(continued)
Figure 12. Readback State of Address Counter or Mask Register[61, 62, 63, 64]
tCYC2
tCH2 tCL2
CLK
tCA2 or tCM2
tSA tHA
EXTERNAL
ADDRESS
A0–A17
An*
An
INTERNAL
ADDRESS
An+1
An
An+2
An+3
An+4
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
61. CE0 = OE = BE0 – BE7 = LOW; CE1 = R/W = CNTRST = MRST = HIGH.
62. Address in output mode. Host must not be driving address bus after tCKLZ in next clock cycle.
63. Address in input mode. Host can drive address bus after tCKHZ.
64. 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 : 38-06069 Rev. *L
Page 22 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Waveforms
(continued)
Figure 13. Left_Port (L_Port) Write to Right_Port (R_Port) Read[65, 66, 67]
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
R_PORT
ADDRESS
tSA
tHA
An
R/WR
tCD2
R_PORT
Qn
DATAOUT
tDC
Notes
65. CE0 = OE = ADS = CNTEN = BE0 – BE7 = LOW; CE1 = CNTRST = MRST = CNT/MSK = HIGH.
66. 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 will be Read out.
67. If tCCS < minimum specified value, then R_Port will 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 will Read the most recent data (written by L_Port) (tCYC2 + tCD2) after the rising edge of R_Port's clock.
Document Number : 38-06069 Rev. *L
Page 23 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Switching Waveforms
(continued)
Figure 14. Counter Interrupt and Retransmit[68, 69, 70, 71, 72]
tCH2
tCYC2
tCL2
CLK
tSCM
tHCM
CNT/MSK
ADS
CNTEN
COUNTER
INTERNAL
ADDRESS
1FFFC
1FFFE
1FFFD
1FFFF
Last_Loaded
Last_Loaded +1
tRCINT
tSCINT
CNTINT
Figure 15. Mailbox Interrupt Timing[73, 74, 75, 76, 77]
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
68. CE0 = OE = BE0 – BE7 = LOW; CE1 = R/W = CNTRST = MRST = HIGH.
69. CNTINT is always driven.
70. CNTINT goes LOW when the unmasked portion of the address counter is incremented to the maximum value.
71. The mask register assumed to have the value of 1FFFFh.
72. Retransmit happens if the counter remains in increment mode after it wraps to initially loaded value.
73. CE0 = OE = ADS = CNTEN = LOW; CE1 = CNTRST = MRST = CNT/MSK = HIGH.
74. Address “1FFFF” is the mailbox location for R_Port.
75. L_Port is configured for Write operation, and R_Port is configured for Read operation.
76. At least one byte enable (B0 – B3) is required to be active during interrupt operations.
77. 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 : 38-06069 Rev. *L
Page 24 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Table 7. Read/Write and Enable Operation (Any Port) [78, 79, 80, 81, 82]
Inputs
OE
Operation
CE0
CE1
R/W
DQ0 – DQ71
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
78. CYD04S72V have 16 address bits, CYD09S72V have 17 address bits and CYD18S72V have 18 bits.
79. X” = “Don’t Care,” “H” = HIGH, “L” = LOW.
80. OE is an asynchronous input signal.
81. When CE changes state, deselection and Read happen after one cycle of latency.
82. CE0 = OE = LOW; CE1 = R/W = HIGH.
Document Number : 38-06069 Rev. *L
Page 25 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Ordering Information
Speed
(MHz)
Ordering Code
Package Name
Package Type
Operating Range
256K × 72 (18-Mbit) 3.3 V Synchronous CYD18S72V Dual-Port SRAM
133
100
CYD18S72V-133BBC
BB484
484-ball Ball Grid Array
Commercial
23 mm × 23 mm with 1.0-mm pitch (FBGA)
CYD18S72V-133BBI
BB484
484-ball Ball Grid Array
Industrial
23 mm × 23 mm with 1.0-mm pitch (FBGA)
CYD18S72V-100BBC
BB484
484-ball Ball Grid Array
Commercial
23 mm × 23 mm with 1.0-mm pitch (FBGA)
CYD18S72V-100BBI
BB484
484-ball Ball Grid Array
Industrial
23 mm × 23 mm with 1.0-mm pitch (FBGA)
128K × 72 (9-Mbit) 3.3 V Synchronous CYD09S72V Dual-Port SRAM
133
CYD09S72V-133BBC
BB484
484-ball Ball Grid Array
Commercial
23 mm × 23 mm with 1.0-mm pitch (FBGA)
64K x 72 (4-Mbit) 3.3 V Synchronous CYD04S72V Dual-Port SRAM
167
CYD04S72V-167BBC
BB484
484-ball Ball Grid Array
Commercial
23 mm × 23 mm with 1.0-mm pitch (FBGA)
Ordering Code Definitions
CY D XX
S
72
V - XXX BB
X
X
Temperature Range: X = C or I
C = Commercial; I = Industrial
X = Pb-free (RoHS Compliant)
Package Type:
BB = 484-ball BGA
Speed Grade: XXX = 100 MHz / 133 MHz / 167 MHz
V = 3.3 V
72 = Width: × 72
S = Sync
XX = Density: 04 = 4 Mb; 09 = 9 Mb; 18 = 18 Mb
D = Dual Port SRAM
CY = Cypress Device
Document Number : 38-06069 Rev. *L
Page 26 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Package Diagram
51-85124 *G
Document Number : 38-06069 Rev. *L
Page 27 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Acronyms
Acronym
Description
CMOS
Complementary metal oxide semiconductor
FBGA
fine-pitch ball grid array
JTAG
joint test action group
OE
Output enable
RAM
Random access memory
Document Conventions
Units of Measure
Symbol
Unit of Measure
ns
nano seconds
V
Volts
µA
micro Amperes
mA
milli Amperes
mV
milli Volts
mW
milli Watts
MHz
Mega Hertz
pF
pico Farad
°C
degree Celcius
W
Watts
Document Number : 38-06069 Rev. *L
Page 28 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
Document History Page
Document Title: CYD04S72V / CYD09S72V / CYD18S72V FLEx72™ 3.3 V 64 K/128 K/256 K × 72 Synchronous Dual-Port
RAM
Document Number: 38-06069
REV.
ECN NO.
Issue Date
Orig. of
Change
**
125859
06/17/03
SPN
New Data Sheet
*A
128707
08/01/03
SPN
Added -133 speed bin
Updated spec values for ICC, tHA, tHB, tHW, tHD
Added new parameter ICC1
Added bank select read and read to write to read (OE=low) timing diagrams
*B
128997
09/18/03
SPN
Updated spec values for tOE, tOHZ, tCH2, tCL2, tHA, tHB, tHW, tHD, ICC, ISB5, tSA,
tSB,tSW,tSD, tCD2
Updated read to write (OE=low) timing diagram
Updated Master Reset values for tRS, tRSR, tRSF
Updated pinout
Updated VCORE voltage range
*C
129936
09/30/03
SPN
Updated package diagram
Updated tCD2 value on first page
Removed Preliminary status
*D
233830
See ECN
WWZ
Added 4 Mbit and 9 Mbit x72 devices into the data sheet with updated pinout,
pin description table, power table, and timing table
Changed title
Added Preliminary status to reflect the addition of 4 Mbit and 9 Mbit devices
Removed FLEx72-E from the document
Added counter related functions for 4 Mbit and 9 Mbit
Removed standard JTAG description
Updated block diagram
Updated pinout with FTSEL and one more PORTSTD pins per port
Updated tRSF of CYD18S72V value
*E
288892
See ECN
WWZ
Change pinout D15 from REV[2,4] to VSS to reflect SC pin removal
*F
327355
See ECN
AEQ
Changed pinout K3 from NC to NC[2,5]
Changed pinout K20 from NC to NC[2,5]
Changed pinout D15 from VSS to NC
Changed pinout D8 and M3 from REVL[2,4] to VSS
Changed pinout M20 and W15 from REVR[2,4] to VSS
*G
345735
See ECN
PCX
VREF Pin Definition Updated
Added Pb-Free Part Ordering Informations
*H
360316
See ECN
YDT
Added note for VCORE
Changed notes for PORTSTD to VSS
Changed ICC, ISB1, ISB2 and ISB4 number for CYD09S72V per PE request
Description of Change
*I
460454
See ECN
YDT
Changed CYDxxS72AV to CYDxxS72V (rev. A not implemented)
*J
2898491
07/01/10
AJU
Removed inactive parts from Ordering Information.
Updated Packaging Information
*K
3110296
12/14/2010
ADMU
Updated Ordering Information.
Added Ordering Code Definitions.
*L
3265044
05/25/2011
ADMU
Updates link to Application note.
Removed obsolete part information.
Notes updated across datasheet as per template.
Added Acronyms and Units of measure table.
Document Number : 38-06069 Rev. *L
Page 29 of 30
[+] Feedback
CYD04S72V
CYD09S72V
CYD18S72V
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
Optical & Image Sensing
cypress.com/go/memory
cypress.com/go/image
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, 2003-2011. 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 : 38-06069 Rev. *L
Revised May 25, 2011
Page 30 of 30
[+] Feedback
Similar pages