UPSD3422EV-40U6 STMicroelectronics, UPSD3422EV-40U6 Datasheet - Page 144

• Manufacturer Part Number: UPSD3422EV-40U6
• Description: MCU 8BIT 8032 64KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3422EV-40U6

• 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: 80KB (80K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• For Use With: 497-5577 - BOARD EVAL USB POWER SWITCH497-5518 - EVAL BOARD RFID READER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-4905

SPI (synchronous peripheral interface)
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Figure 44. SPI full-duplex data exchange
Figure 45. SPI receive operation example
SPIINTR
(SPO=0)
(SPO=1)
SPICLK
SPICLK
interrupt requested
SPIRXD
RORIS
BUSY
SPIRDR Full
RISF
Bit7
Baud rate
generator
8-bit shift
register
read data in SPIRDR
Master device
Interrupt handler
Bit0
SPICLK
SPIRxD
Bit1
SPITxD
1 frame
UPSD3422, UPSD3433, UPSD3434, UPSD3454
SPI bus
interrupt requested
SPIRDR Full
Bit7
MISO
SCLK
MOSI
SS
Bit0
Slave device
Bit1
8-bit shift
register
interrupt requested
Transmit End
Bit7
AI10485b
AI07855