CY7C68320-100AXC Cypress Semiconductor Corp, CY7C68320-100AXC Datasheet - Page 30

• Manufacturer Part Number: CY7C68320-100AXC
• Description: IC USB 2.0 BRIDGE AT2LP 100LQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB AT2LP™r

Specifications of CY7C68320-100AXC

• Controller Type: USB 2.0 Controller
• Interface: I²C
• Voltage - Supply: 3.15 V ~ 3.45 V
• Current - Supply: 50mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• For Use With: CY4615B - KIT USB TO ATA REFERENCE DESIGN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 8-7. EEPROM-related Vendor-specific Commands
8.6
There are three methods to program the EEPROM:
Any vendor-specific USB write request to the Serial ROM
device configuration space will simultaneously update internal
configuration register values as well. If the I
programmed without vendor specific USB commands, AT2LP
must be synchronously reset (RESET#) before configuration
data is reloaded.
The AT2LP supports a subset of the “slow mode” specification
(100 KHz) required for 24LCXXB EEPROM family device
support. Features such as “Multi-Master,” “Clock Synchroni-
zation” (the SCL pin is output only), “10-bit addressing,” and
“CBUS device support” are not supported. Vendor-specific
USB commands allow the AT2LP to address up to 256 bytes
of data.
8.6.1
This request enables configuration data writes to the AT2LP’s
configuration space. The wIndex field specifies the starting
address and the wLength field denotes the data length in
bytes.
Legal values for wValue are as follows:
Configuration-byte writes must be constrained to addresses
0x2 through 0xF, as shown in Table 8-7. Attempts to write
outside this address space will result in undefined operation.
Configuration-byte writes only overwrite AT2LP Configuration
Byte registers, the original data source (I
remains unchanged.
8.6.2
This USB request allows data retrieval from the data source
specified by the wValue field. Data is retrieved beginning at the
Document 38-08033 Rev. *D
LOAD_CONFIG_DATA
READ_CONFIG_DATA
• External device programmer
• USB commands listed in Table 8-7
• In-system programming on a bed-of-nails tester.
• 0x0000 Configuration bytes, address range 0x2 – 0xF
• 0x0002 External I
Programming the EEPROM
LOAD_CONFIG_DATA
READ_CONFIG_DATA
Label
2
C memory device
bmRequestType bRequest
0xC0
0x40
2
C memory device)
2
0x01
0x02
C device is
Data Source
wValue
0x0000
address specified by the wIndex field. The wLength field
denotes the length in bytes of data requested from the data
source.
Legal values for wValue are as follows:
Illegal values for wValue will result in undefined operation.
Attempted reads from an I
connected will result in undefined operation. Attempts to read
configuration bytes with starting addresses greater than 0xF
will also result in undefined operation.
9.0
Storage Temperature.................................. –65°C to +150°C
Ambient Temperature with Power Supplied ..... 0°C to +70°C
Supply Voltage to Ground Potential .............–0.5 V to +4.0 V
DC Input Voltage to Any Input Pin ............................... 5.25 V
DC Voltage Applied to Outputs
in Hi-Z State......................................... –0.5 V to V
Power Dissipation..................................................... 300 mW
Static Discharge Voltage.......................................... > 2000 V
Max Output Current Per I/O Port
(D0-D7, D8-15, ATA control)........................................ 10 mA
10.0
T
Supply Voltage ...........................................+3.15V to +3.45V
Ground Voltage ................................................................. 0V
F
.................................................................. Parallel Resonant
• 0x0000
• 0x0002 External I
A
osc
(Ambient Temperature Under Bias) ............. 0°C to +70°C
(Oscillator or Crystal Frequency) .... 24 MHz ± 100 ppm,
Absolute Maximum Ratings
Operating Conditions
Starting Address Data Length
30x02 – 0x0F
Configuration bytes, addresses 0x0 – 0xF only
wIndex
CY7C68300B/CY7C68301B
CY7C68320/CY7C68321
2
C memory device
2
C memory device when none is
Data Length
wLength
Configuration
Configuration
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Data
Data
Data
CC
+ 0.5 V