UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 111

• 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
22
Note:
IrDA interface
uPSD34xx devices provide an internal IrDA interface that will allow the connection of the
UART1 serial interface directly to an external infrared transceiver device. The IrDA interface
does this by automatically shortening the pulses transmitted on UART1’s TxD1 pin, and
stretching the incoming pulses received on the RxD1 pin. Reference Figures
When the IrDA interface is enabled, the output signal from UART1’s transmitter logic on pin
TxD1 is compliant with the IrDA Physical Layer Link Specification v1.4 (www.irda.org)
operating from 1.2k bps up to 115.2k bps. The pulses received on the RxD1 pin are
stretched by the IrDA interface to be recognized by UART1’s receiver logic, also adhering to
the IrDA specification up to 115.2k bps.
In
pulse in an IR Frame. A logic '1' in a UART Frame corresponds to no pulse in an IR Frame.
Figure 39. IrDA interface
Figure 40. Pulse shaping by the IrDA interface
Figure 40
a logic '0' in the serial data stream of a UART Frame corresponds to a logic high
Bit Time
0
Start
Start
Bit
Bit
UART1
0
1
1
uPSD34xx
SIRClk
0
RxD
TxD
0
1
1
Interface
0
UART Frame
UART Frame
IrDA
Data Bits
Data Bits
IR Frame
IR Frame
0
0
0
1
1
RxD1-IrDA
TxD1-IrDA
Pulse Width = 3/16 Bit Time
1
1
0
0
Transceiver
1
Stop
Stop
Bit
Bit
IrDA
1
AI10437
IrDA interface
39
AI10438
and 40.
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