CY7C64713-56LFXC Cypress Semiconductor Corp, CY7C64713-56LFXC Datasheet - Page 44

• Manufacturer Part Number: CY7C64713-56LFXC
• Description: IC MCU USB EZ FX1 16KB 56VQFN
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB FX1™r

Specifications of CY7C64713-56LFXC

• Applications: USB Microcontroller
• Core Processor: 8051
• Program Memory Type: ROMless
• Controller Series: CY7C647xx
• Ram Size: 16K x 8
• Interface: I²C, USB, USART
• Number Of I /o: 24
• Voltage - Supply: 3.15 V ~ 3.45 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 56-VQFN Exposed Pad, 56-HVQFN, 56-SQFN, 56-DHVQFN
• Data Bus Width: 8 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, USART
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 3
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• For Use With: 428-1681 - KIT USB FX1 DEVELOPMENT BOARD428-1677 - KIT DEVELOPMENT EZ-USB FX2LP428-1339 - KIT LOW SPEED PERSONALITY BOARD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 428-1680; CY7C64713-56LFXC

Sequence Diagram
Single and Burst Synchronous Read Example
Figure 30
signals during a synchronous FIFO read using IFCLK as the
synchronizing clock. This diagram illustrates a single read
followed by a burst read.
■
■
Document #: 38-08039 Rev. *F
Note t
running at 48 MHz, the FIFO address setup time is more than
one IFCLK cycle.
Note The data is pre-fetched and is driven on the bus when
SLOE is asserted.
At t = 0 the FIFO address is stable and the signal SLCS is
asserted (SLCS may be tied low in some applications).
At t = 1, SLOE is asserted. SLOE is an output enable only,
whose sole function is to drive the data bus. The data that is
driven on the bus is the data that the internal FIFO pointer is
currently pointing to. In this example it is the first data value in
the FIFO.
FIFO POINTER
FIFO DATA BUS
FLAGS
FIFOADR
SLRD
SLCS
DATA
IFCLK
SLOE
SFA
shows the timing relationship of the SLAVE FIFO
has a minimum of 25 ns. This means when IFCLK is
Not Driven
t=0
IFCLK
N
SLOE
Figure 30. Slave FIFO Synchronous Read Sequence and Timing Diagram
t=1
t
SFA
t
OEon
Figure 31. Slave FIFO Synchronous Sequence of Events Diagram
Data Driven: N
t=2
Driven: N
t
SRD
IFCLK
N
t
IFCLK
t
XFD
t=3
SLRD
t
RDH
t
XFLG
t
OEoff
N+1
t=4
N+1
IFCLK
t
N+1
FAH
SLOE
SLRD
Not Driven
IFCLK
N+1
t
T=0
SFA
■
■
The same sequence of events are shown for a burst read and
are marked with the time indicators of T = 0 through 5.
t
SLOE
OEon
At t = 2, SLRD is asserted. SLRD must meet the setup time of
t
the IFCLK) and maintain a minimum hold time of t
from the IFCLK edge to the deassertion of the SLRD signal).
If the SLCS signal is used, it must be asserted with SLRD, or
before SLRD is asserted (that is, the SLCS and SLRD signals
must both be asserted to start a valid read condition).
The FIFO pointer is updated on the rising edge of the IFCLK,
while SLRD is asserted. This starts the propagation of data
from the newly addressed location to the data bus. After a
propagation delay of t
IFCLK) the new data value is present. N is the first data value
read from the FIFO. To have data on the FIFO data bus, SLOE
MUST also be asserted.
SRD
T=2
>= t
T=1
N+1
N+1
IFCLK
(time from asserting the SLRD signal to the rising edge of
SRD
N+1
SLRD
t
XFD
N+2
N+2
IFCLK
N+2
N+3
N+3
IFCLK
XFD
t
XFD
(measured from the rising edge of
N+4
N+4
IFCLK
N+3
SLRD
t
>= t
XFD
N+4
N+4
RDH
IFCLK
t
N+4
OEoff
CY7C64713
SLOE
T=3
T=4
t
FAH
Page 44 of 55
Not Driven
RDH
IFCLK
N+4
(time
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