UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 134

• 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

SPI (synchronous peripheral interface)
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SPI (synchronous peripheral interface)
uPSD34xx devices support one serial SPI interface in Master Mode only. This is a three- or
four-wire synchronous communication channel, capable of full-duplex operation on 8-bit
serial data transfers. The four SPI bus signals are:
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This SPI interface supports single-Master/multiple-Slave connections. Multiple-Master
connections are not directly supported by the uPSD34xx (no internal logic for collision
detection).
If more than one Slave device is required, the SPISEL signal may be generated from
uPSD34xx GPIO outputs (one for each Slave) or from the PLD outputs of the PSD Module.
Figure 44
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Figure 44. SPI device connection examples
uPSD34xx
SPI Master
SPIRxD
Pin P1.5 or P4.5 receives data from the Slave SPI device to the uPSD34xx
SPITxD
Pin P1.6 or P4.6 transmits data from the uPSD34xx to the Slave SPI device
SPICLK
Pin P1.4 or P4.4 clock is generated from the uPSD34xx to the SPI Slave device
Pin P1.7 or P4.7 selects the signal from the uPSD34xx to an individual Slave SPI
device
Single-Master/Single-Slave with SPISEL
Single-Master/Single-Slave without SPISEL
Single-Master/Multiple-Slave without SPISEL
SPISEL
illustrates three examples of SPI device connections using the uPSD34xx:
Single-Master/Single-Slave, with SPISEL
SPICLK
SPIRxD
SPISEL
SPITxD
SPI Bus
uPSD34xx
SPI Master
MISO
SCLK
MOSI
SS
GPIO or PLD
GPIO or PLD
Single-Master/Multiple-Slave, without SPISEL
SPIRxD
SPICLK
SPITxD
SPI Slave
Device
SPI Bus
uPSD34xx
SPI Master
MISO
SCLK
MISO
SCLK
MOSI
SS
MOSI
SS
Single-Master/Single-Slave, without SPISEL
SPICLK
SPIRxD
SPITxD
SPI Slave
SPI Slave
Device
Device
SPI Bus
MISO
MOSI
SCLK
SS
uPSD34xx
SPI Slave
AI07853b
Device