UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 170

• 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

USB interface
25.5
170/293
Typical connection to USB
Connecting the uPSD34xx to the USB is simple and straightforward.
typical self-powered example requiring only three resistors and a USB power detection
circuit. The USB power detection circuit detects when the device has been connected to the
USB. When V
USB specification, the pull-up resistor on D+ is required to signal to the upstream USB port
when a full speed device has been connected to the bus. The resistors in series in the D+
and D– lines are recommended per the USB specification to reduce transients on the data
lines.
Figure 56. Typical self powered example
BUS
is detected, it switches 3.3V to the pull-up resistor on the D+ line. Per the
USB
V BUS
GND
D–
D+
Detection Block
USB Power
V CC
+3.3V
1.5K
22
22
USB–
USB+
GND
V CC
V CC
uPSD34xx
Figure 56
V DD
V DD
AI10495
shows a
uPSD34xx