CY7C4245-15ASC Cypress Semiconductor Corp, CY7C4245-15ASC Datasheet - Page 3
![IC SYNC FIFO MEM 4KX18 64LQFP](/photos/6/76/67621/428-64-tqfp_sml.jpg)
CY7C4245-15ASC
Manufacturer Part Number
CY7C4245-15ASC
Description
IC SYNC FIFO MEM 4KX18 64LQFP
Manufacturer
Cypress Semiconductor Corp
Series
CY7Cr
Specifications of CY7C4245-15ASC
Function
Synchronous
Memory Size
72K (4K x 18)
Data Rate
100MHz
Access Time
10ns
Voltage - Supply
3.3V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
64-LQFP
Configuration
Dual
Density
72Kb
Access Time (max)
10ns
Word Size
18b
Organization
4Kx18
Sync/async
Synchronous
Expandable
Yes
Bus Direction
Uni-Directional
Package Type
TQFP
Clock Freq (max)
66.7MHz
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Supply Current
45mA
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
64
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Not Compliant, Contains lead / RoHS non-compliant
Other names
428-1225
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C4245-15ASC
Manufacturer:
CYPRESS
Quantity:
1 831
Company:
Part Number:
CY7C4245-15ASC
Manufacturer:
Cypress Semiconductor Corp
Quantity:
10 000
Document #: 38-06029 Rev. *C
Selection Guide
Pin Definitions
Maximum Frequency
Maximum Access Time
Minimum Cycle Time
Minimum Data or Enable Set-up
Minimum Data or Enable Hold
Maximum Flag Delay
Operating Current
Density
Packages
D
Q
WEN
REN
WCLK
RCLK
WXO/HF
EF
FF
PAE
PAF
LD
FL/RT
WXI
RXI
Signal Name
0−17
0−17
Data Inputs
Data Outputs
Write Enable
Read Enable
Write Clock
Read Clock
Write Expansion
Out/Half Full Flag
Empty Flag
Full Flag
Programmable
Almost Empty
Programmable
Almost Full
Load
First Load/
Retransmit
Write Expansion
Input
Read Expansion
Input
64-pin 14x14
64-pin 10x10
CY7C4425V
Description
64 x 18
STQFP
TQFP
Commercial
64-pin 14x14
64-pin 10x10
CY7C4205V
I/O
O Data outputs for an 18-bit bus.
O Dual-Mode Pin. Single device or width expansion - Half Full status flag. Cascaded –
O When EF is LOW, the FIFO is empty. EF is synchronized to RCLK.
O When FF is LOW, the FIFO is full. FF is synchronized to WCLK.
O When PAE is LOW, the FIFO is almost empty based on the almost empty
O When PAF is LOW, the FIFO is almost full based on the almost full offset
I
I
I
I
I
I
I
I
I
256 x 18
STQFP
TQFP
Data inputs for an 18-bit bus.
Enables the WCLK input.
Enables the RCLK input.
The rising edge clocks data into the FIFO when WEN is LOW and the FIFO is
not Full. When LD is asserted, WCLK writes data into the programmable
flag-offset register.
The rising edge clocks data out of the FIFO when REN is LOW and the FIFO is
not Empty. When LD is asserted, RCLK reads data out of the programmable
flag-offset register.
Write Expansion Out signal, connected to WXI of next device.
offset value programmed into the FIFO. PAE is asynchronous when
V
to V
value programmed into the FIFO. PAF is asynchronous when V
tied to V
When LD is LOW, D
mable-flag-offset register.
Dual-Mode Pin. Cascaded – The first device in the daisy chain will have FL tied to
V
expansion, FL is tied to V
function is also available in standalone mode by strobing RT.
Cascaded – Connected to WXO of previous device. Not Cascaded – Tied to V
Cascaded – Connected to RXO of previous device. Not Cascaded – Tied to V
CC
SS
; all other devices will have FL tied to V
/SMODE is tied to V
SS
.
CC
; it is synchronized to WCLK when V
CY7C42X5V-15
64-pin 14x14
64-pin 10x10
CY7C4215V
512 x 18
STQFP
TQFP
66.7
15
30
11
11
4
1
0−17
CC
SS
(O
; it is synchronized to RCLK when V
on all devices. Not Cascaded – Tied to V
0−17
64-pin 14x14
64-pin 10x10
CY7C4225V
) are written (read) into (from) the program-
CY7C42X5V-25
1K x 18
STQFP
TQFP
Function
40
15
25
15
30
6
1
CY7C4225V/4205V/4215V
CY7C4425V/4235V/4245V
CC
. In standard mode of width
CC
64-pin 14x14
64-pin 10x10
CY7C4235V
/SMODE is tied to V
2K x 18
STQFP
TQFP
CY7C42X5V-35
28.6
20
35
20
30
7
2
CC
/SMODE is tied
CC
SS
64-pin 14x14
64-pin 10x10
CY7C4245V
/SMODE is
. Retransmit
Page 3 of 20
4K x 18
STQFP
TQFP
SS
.
Unit
MHz
mA
ns
ns
ns
ns
ns
SS
SS
.
.
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