CY7C68014A-100AXC Cypress Semiconductor Corp, CY7C68014A-100AXC Datasheet - Page 54

• Manufacturer Part Number: CY7C68014A-100AXC
• Description: IC MCU USB PERIPH HI SPD 100LQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB FX2LP™r

Specifications of CY7C68014A-100AXC

• Program Memory Type: ROMless
• Package / Case: 100-LQFP
• Applications: USB Microcontroller
• Core Processor: 8051
• Controller Series: CY7C680xx
• Ram Size: 16K x 8
• Interface: I²C, USB, USART
• Number Of I /o: 40
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Processor Series: CY7C68xx
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 16 KB
• Interface Type: I2C/USART/USB
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 40
• Number Of Timers: 3
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: CY3684
• Minimum Operating Temperature: 0 C
• Controller Family/series: (8051) USB
• Core Size: 8 Bit
• No. Of I/o's: 40
• Program Memory Size: 16KB
• Cpu Speed: 48MHz
• No. Of Timers: 3
• Embedded Interface Type: I2C, USART, USB
• Rohs Compliant: Yes
• Package: 100TQFP
• Device Core: 8051
• Family Name: FX2LP
• Maximum Speed: 48 MHz
• Operating Supply Voltage: 3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: CY4611B - KIT USB TO ATA REFERENCE DESIGN
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 428-1670

9.17.4 Sequence Diagram of a Single and Burst Asynchronous Write
Figure 9-23
write in an asynchronous mode. The diagram shows a single
write followed by a burst write of 3 bytes and committing the 4
byte short packet using PKTEND.
■
■
■
■
Document #: 38-08032 Rev. *T
At t = 0 the FIFO address is applied, insuring that it meets the
setup time of t
(SLCS may be tied low in some applications).
At t = 1 SLWR is asserted. SLWR must meet the minimum
active pulse of t
t
before SLWR is asserted.
At t = 2, data must be present on the bus t
deasserting edge of SLWR.
At t = 3, deasserting SLWR causes the data to be written from
the data bus to the FIFO and then increments the FIFO pointer.
The FIFO flag is also updated after t
edge of SLWR.
WRpwh
FIFOADR
PKTEND
FLAGS
SLWR
DATA
SLCS
. If the SLCS is used, it must be asserted with SLWR or
shows the timing relationship of the SLAVE FIFO
t=0
SFA
WRpwl
t
SFA
. If SLCS is used, it must also be asserted
t =1
Figure 9-23. Slave FIFO Asynchronous Write Sequence and Timing Diagram
t
and minimum de-active pulse width of
WRpwl
t=2
t
SFD
t=3
N
t
t
FDH
WRpwh
t
FAH
t
XFLG
XFLG
from the deasserting
SFD
T=0
t
before the
SFA
T=1
t
WRpwl
T=2
t
SFD
T=3
t
N+1
FDH
t
WRpwh
T=4
The same sequence of events are shown for a burst write and is
indicated by the timing marks of T = 0 through 5.
Note In the burst write mode, after SLWR is deasserted, the data
is written to the FIFO and then the FIFO pointer is incremented
to the next byte in the FIFO. The FIFO pointer is post
incremented.
In
SLWR is deasserted, the short 4 byte packet can be committed
to the host using the PKTEND. The external device should be
designed to not assert SLWR and the PKTEND signal at the
same time. It should be designed to assert the PKTEND after
SLWR is deasserted and met the minimum deasserted pulse
width. The FIFOADDR lines have to held constant during the
PKTEND assertion.
t
WRpwl
T=5
Figure 9-23
t
SFD
T=6
t
N+2
FDH
t
WRpwh
T=7
after the four bytes are written to the FIFO and
t
WRpwl
CY7C68013A, CY7C68014A
CY7C68015A, CY7C68016A
T=8
t
SFD
T=9
t
t
N+3
WRpwh
FDH
t
[20]
PEpwl
t
XFLG
t
PEpwh
t
FAH
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