UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 147

• Manufacturer Part Number: UPSD3433EB40U6
• Description: MCU 8BIT 8032 128KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3433EB40U6

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IrDA, SPI, UART/USART, USB
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 160KB (160K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• For Use With: 497-5518 - EVAL BOARD RFID READER497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-5660

uPSD34xx
25.2
Note:
Types of transfers
The USB specification defines four types of transfers, Bulk, Interrupt, Isochronous, and
Control.
The uPSD34xx supports all types of transfers except Isochronous.
●
●
Figure 51. IN and OUT Bulk Transfers
Figure 52. Interrupt Transfer
Bulk Transfers (see
Bulk data is transferred in both directions and is used with both IN and OUT endpoints.
Packets may be 8, 16, 32, or 64 bytes in length. Bulk transfers occur in bursts, and are
scheduled by the host when there is available time on the bus. While there is no
guaranteed delivery time for bulk transfers, the accuracy of the data is guaranteed due
to automatic retries for erroneous data. Bulk transfers are typically used for mass
storage, printer, and scanner data.
Interrupt Transfers (see
Interrupt data is a lot like bulk data but travels only in one direction, from the device to
the host, so only IN endpoints are used. Interrupt data holds packet sizes ranging from
1 to 64 bytes. Interrupt endpoints have an associated polling interval, meaning that the
host sends IN tokens at a periodic interval to the host on a regular basis. Interrupt
transfers are typically used for human interface devices such as keyboards, mice, and
joysticks.
OUT
IN
IN
ADDR
ADDR
ADDR
Token Packet
Token Packet
Token Packet
ENDP
ENDP
ENDP
Figure
Figure
CRC5
CRC5
CRC5
51)
52)
Data1
Data1
Data1
Data Packet
Data Packet
Data Packet
Payload
Payload
Payload
Data
Data
Data
CRC16
CRC16
CRC16
Handshake Packet
Handshake Packet
Handshake Packet
ACK
ACK
ACK
USB interface
AI10491
AI10490
147/293