9-Mb (256K x 36/512K x 18) Pipelined DCD Sync SRAM
CY7C1366B
CY7C1367B
Features
• Supports bus operation up to 225 MHz
• Available speed grades are 225, 200 and 166 MHz
• Registered inputs and outputs for pipelined operation
• Optimal for performance (Double-Cycle deselect)
— Depth expansion without wait state
• 3.3V –5% and +10% core power supply (V
• 2.5V / 3.3V I/O operation
• Fast clock-to-output times
— 2.8 ns (for 225-MHz device)
— 3.0 ns (for 200-MHz device)
— 3.5 ns (for 166-MHz device)
• Provide high-performance 3-1-1-1 access rate
• User-selectable burst counter supporting Intel
Pentium
interleaved or linear burst sequences
• Separate processor and controller address strobes
• Synchronous self-timed writes
• Asynchronous output enable
• Offered in JEDEC-standard 100-pin TQFP, 119-ball BGA
and 165-Ball fBGA packages
• IEEE 1149.1 JTAG-Compatible Boundary Scan
• “ZZ” Sleep Mode Option
DD
)
Functional Description
[1]
The CY7C1366B/CY7C1367B SRAM integrates 262,144 x 36
and 524,288 x 18 SRAM cells with advanced synchronous
peripheral circuitry and a two-bit counter for internal burst
operation. All synchronous inputs are gated by registers
controlled by a positive-edge-triggered Clock Input (CLK). The
synchronous inputs include all addresses, all data inputs,
address-pipelining Chip Enable (
Enables (CE
and
ADV
(
). Asynchronous inputs include the Output Enable (OE)
GW
and the ZZ pin.
and
2
), Write Enables (
[2]
), Burst Control inputs (
CE
3
BW
), depth-expansion Chip
CE
1
, and
X
), and Global Write
BWE
ADSC, ADSP
Addresses and chip enables are registered at rising edge of
clock when either Address Strobe Processor (
Address Strobe Controller (
) are active. Subsequent
ADSC
ADSP
) or
burst addresses can be internally generated as controlled by
the Advance pin (
ADV
).
Address, data inputs, and write controls are registered on-chip
to initiate a self-timed Write cycle.This part supports Byte Write
operations (see Pin Descriptions and Truth Table for further
details). Write cycles can be one to four bytes wide as
controlled by the byte write control inputs. GW
causes all bytes to be written.
This device incorporates an
active
LOW
additional pipelined enable register which delays turning off
the output buffers an additional cycle when a deselect is
executed.This feature allows depth expansion without penalizing system performance.
The CY7C1366B/CY7C1367B operates from a +3.3V core
power supply while all outputs operate with a +3.3V or a +2.5V
supply. All inputs and outputs are JEDEC-standard
JESD8-5-compatible.
,
Selection Guide
225 MHz200 MHz166 MHzUnit
Maximum Access Time2.83.03.5ns
Maximum Operating Current250220180mA
Maximum CMOS Standby Current303030mA
Shaded areas contain advance information. Please contact your local Cypress sales representative for availability of these parts.
Notes:
1. For best–practices recommendations, please refer to the Cypress application note System Design Guidelines on www.cypress.com.
is for TQFP and 165 fBGA package only. 119 BGA is offered only in 2 Chip Enable.
2. CE
3
Cypress Semiconductor Corporation•3901 North First Street•San Jose, CA 95134•408-943-2600
Document #: 38-05096 Rev. *B Revised February 23, 2004
Address Inputs used to select one of the 256K
address locations. Sampled at the rising edge of the
CLK if
and
CE3
two-bit counter.
Byte Write Select Inputs, active LOW. Qualified with
BWE
to conduct byte writes to the SRAM. Sampled on
the rising edge of CLK.
Global Write Enable Input, active LOW. When
asserted LOW on the rising edge of CLK, a global write
is conducted (ALL bytes are written, regardless of the
values on BWX and BWE).
Byte Write Enable Input, active LOW. Sampled on the
rising edge of CLK. This signal must be asserted LOW
to conduct a byte write.
Clock Input. Used to capture all synchronous inputs to
the device. Also used to increment the burst counter
when ADV
Chip Enable 1 Input, active LOW. Sampled on the
rising edge of CLK. Used in conjunction with CE
[2]
CE
3
CE
is HIGH.
1
Chip Enable 2 Input, active HIGH. Sampled on the
rising edge of CLK. Used in conjunction with CE
[2]
CE
3
Chip Enable 3 Input, active LOW. Sampled on the
rising edge of CLK. Used in conjunction with CE
CE2 to select/deselect the device.
BGA. Where referenced, CE
throughout this document for BGA.
Output Enable, asynchronous input, active LOW.
Controls the direction of the I/O pins. When LOW, the
I/O pins behave as outputs. When deasserted HIGH,
DQ pins are three-stated, and act as input data pins. OE
is masked during the first clock of a read cycle when
emerging from a deselected state.
Advance Input signal, sampled on the rising edge of
CLK, active LOW. When asserted, it automatically
increments the address in a burst cycle.
Address Strobe from Processor, sampled on the
rising edge of CLK, active LOW. When asserted LOW,
addresses presented to the device are captured in the
address registers. A1: A0 are also loaded into the burst
counter. When ADSP
ADSP
deasserted HIGH.
Address Strobe from Controller, sampled on the
rising edge of CLK, active LOW. When asserted LOW,
addresses presented to the device are captured in the
address registers. A1: A0 are also loaded into the burst
counter. When ADSP and ADSC are both asserted, only
ADSP
Power Supply Power supply inputs to the core of the device.
GroundGround for the core of the device.
I/O Power Sup-
ply
Stati c
output
Synchronous
input
Synchronous
input
Synchronous
CY7C1366
CY7C1367
ZZ “sleep” Input, active HIGH. When asserted HIGH
places the device in a non-time-critical “sleep” condition
with data integrity preserved. For normal operation, this
pin has to be LOW or left floating. ZZ pin has an internal
pull-down.
Bidirectional Data I/O lines. As inputs, they feed into
an on-chip data register that is triggered by the rising
edge of CLK. As outputs, they deliver the data contained
in the memory location specified by the addresses
presented during the previous
cycle. The direction of the pins is controlled by OE
When OE
When HIGH, DQs and DQP
condition.
Power supply for the I/O circuitry.
Selects Burst Order. When tied to GND selects linear
burst sequence. When tied to V
interleaved burst sequence. This is a strap pin and
should remain static during device operation. Mode Pin
has an internal pull-up.
Serial data-out to the JTAG circuit. Delivers data on
the negative edge of TCK. If the JTAG feature is not
being utilized, this pin should be disconnected. This pin
is not available on TQFP packages.
Serial data-In to the JTAG circuit. Sampled on the
rising edge of TCK. If the JTAG feature is not being
utilized, this pin can be disconnected or connected to
V
DD
Serial data-In to the JTAG circuit. Sampled on the
rising edge of TCK. If the JTAG feature is not being
utilized, this pin can be disconnected or connected to
V
DD
is asserted LOW, the pins behave as outputs.
. This pin is not available on TQFP packages.
. This pin is not available on TQFP packages.
clock rise of the read
are placed in a three-state
X
or left floating selects
DD
.
Document #: 38-05096 Rev. *BPage 7 of 32
CY7C1366
B
B
CY7C1367
CY7C1366B–Pin Definitions (continued)
BGA
NameTQFP
TCK–U4R7JTAG-ClockClock input to the JTAG circuitry. If the JTAG feature
NC14,16,66,
42,39,38
CY7C1367B–Pin Definitions
NameTQFP
, A1 , A37,36,32,33,
A
0
BW
,BW
A
GW
BWE
CLK89K4B6Input-
34,35,43,44,
45,46,47,48,
49,50,80,81,
82,99,100
93,94G3,L5B5,A4Input-
B
88
87M4A7Input-
(2 Chip
Enable)fBGAI/ODescription
is not being utilized, this pin must be connected to V
This pin is not available on TQFP packages.
B1,C1,R1,
T1,T2,J3,
D4,L4,5J,
5R,6T,6U,
B7,C7,R7
A11,B1,C2,
C10,H1,H3,
H9,H10,N2,
N5,N7,N10,
P1,A1,B11,P2
–No Connects. Not internally connected to the die
,R2,N6
BGA
(2-Chip
Enable)fBGAI/ODescription
P4,N4,A2,
C2,R2,T2,
A3,B3,C3,
T3,A5,B5,
C5,T5,A6,
B6,C6,R6,
T6
R6,P6,A2,
A10,A11,B2,
B10,P3,P4,
P8,P9,P10,
P11,R3,R4,
R8,R9,R10,
R11
H4B7Input-
Input-
Synchronous
Synchronous
Synchronous
Address Inputs used to select one of the 512K
address locations. Sampled at the rising edge of the
CLK if
and
CE3
two-bit counter.
or
ADSP
[2]
are sampled active. A1: A0 are fed to the
is active LOW, and CE1, CE2,
ADSC
Byte Write Select Inputs, active LOW. Qualified with
BWE
to conduct byte writes to the SRAM. Sampled on
the rising edge of CLK
.
Global Write Enable Input, active LOW. When
asserted LOW on the rising edge of CLK, a global write
is conducted (ALL bytes are written, regardless of the
values on BWX and BWE).
Byte Write Enable Input, active LOW. Sampled on the
Synchronous
rising edge of CLK. This signal must be asserted LOW
to conduct a byte write.
Clock Input. Used to capture all synchronous inputs to
Clock
the device. Also used to increment the burst counter
when ADV
is asserted LOW, during a burst operation.
SS
.
CE
CE
CE
OE
1
2
[2]
3
98E4A3Input-
Synchronous
97B2B3Input-
Synchronous
92–A6Input-
Synchronous
86F4B8Input-
Asynchronous
Chip Enable 1 Input, active LOW. Sampled on the
rising edge of CLK. Used in conjunction with CE
[2]
CE
to select/deselect the device. ADSP is ignored if
3
CE
is HIGH.
1
and
2
Chip Enable 2 Input, active HIGH. Sampled on the
rising edge of CLK. Used in conjunction with CE
[2]
to select/deselect the device.
CE
3
and
1
Chip Enable 3 Input, active LOW. Sampled on the
rising edge of CLK. Used in conjunction with CE
CE2 to select/deselect the device.
BGA. Where referenced, CE
throughout this document for BGA.
Not connected for
[2]
is assumed active
3
1
and
Output Enable, asynchronous input, active LOW.
Controls the direction of the I/O pins. When LOW, the
I/O pins behave as outputs. When deasserted HIGH,
DQ pins are three-stated, and act as input data pins. OE
is masked during the first clock of a read cycle when
emerging from a deselected state.
Power Supply Power supply inputs to the core of the device.
GroundGround for the core of the device.
Advance Input signal, sampled on the rising edge of
CLK, active LOW. When asserted, it automatically
increments the address in a burst cycle.
Address Strobe from Processor, sampled on the
rising edge of CLK, active LOW. When asserted LOW,
addresses presented to the device are captured in the
address registers. A1: A0 are also loaded into the burst
counter. When ADSP and ADSC are both asserted, only
ADSP
is recognized. ASDP is ignored when CE1 is
deasserted HIGH.
Address Strobe from Controller, sampled on the
rising edge of CLK, active LOW. When asserted LOW,
addresses presented to the device are captured in the
address registers. A1: A0 are also loaded into the burst
counter. When ADSP
is recognized.
ADSP
ZZ “sleep” Input, active HIGH. When asserted HIGH
places the device in a non-time-critical “sleep” condition
with data integrity preserved. For normal operation, this
pin has to be LOW or left floating. ZZ pin has an internal
pull-down.
Bidirectional Data I/O lines. As inputs, they feed into
an on-chip data register that is triggered by the rising
edge of CLK. As outputs, they deliver the data contained
in the memory location specified by the addresses
presented during the previous
cycle. The direction of the pins is controlled by OE
When OE
When HIGH, DQs and DQP
condition.
–No Connects. Not internally connected to the die.
Power supply for the I/O circuitry.
Selects Burst Order. When tied to GND selects linear
burst sequence. When tied to V
interleaved burst sequence. This is a strap pin and
should remain static during device operation. Mode Pin
has an internal pull-up.
Serial data-out to the JTAG circuit. Delivers data on
the negative edge of TCK. If the JTAG feature is not
being utilized, this pin should be left unconnected. This
pin is not available on TQFP packages.
Serial data-In to the JTAG circuit. Sampled on the
rising edge of TCK. If the JTAG feature is not being utilized, this pin can be left floating or connected to V
through a pull up resistor. This pin is not available on
TQFP packages.
Serial data-In to the JTAG circuit. Sampled on the
rising edge of TCK. If the JTAG feature is not being utilized, this pin can be disconnected or connected to VDD.
This pin is not available on TQFP packages.
Clock input to the JTAG circuitry. If the JTAG feature
is not being utilized, this pin must be connected to V
This pin is not available on TQFP packages.
or left floating selects
DD
DD
SS
.
Document #: 38-05096 Rev. *BPage 10 of 32
Loading...
+ 22 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.