UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 131

• 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
Else If mode is Master-Receiver:
Bus Arbitration lost? (status.BLOST=1?)
Is this Interrupt from sending an address to Slave, or is it from
receiving a data byte from Slave?
A: (Interrupt is from Master sending addr to Slave)
ACK recvd from Slave? (status.ACK_RESP=0?)
Does Master want to receive just one data byte?
B: (Interrupt is from Master recving data from Slv)
Is this the last data byte to receive from Slave?
–
–
–
<STOP occurs after ISR exit>
–
–
–
–
–
–
–
–
<STOP occurs after ISR exit>
–
If Yes, Arbitration was lost:
S1DAT = dummy, write to release bus
Exit ISR, SIOE will switch to Slave Recv mode
If No, Aribitration was not lost, continue:
If its from sending Slave address, goto A:
If its from receiving Slave data, goto B:
If No, an ACK was not received:
S1CON.STO = 1, set STOP condition
dummy = S1DAT, read to release bus
Exit ISR
If Yes, ACK was received, then continue:
dummy = S1DAT, read to release bus
If Yes, do not allow Master to ACK on next interrupt:
<S1CON.AA is already 0>
Exit ISR, now ready to recv one byte from Slv
If No, Master can ACK next byte from Slv
S1CON.AA = 1, allow Master to send ACK
Exit ISR, now ready to recv data from Slave
recv_buf[buffer_index] = S1DAT, read byte
If Yes, tell Slave to stop transmitting:
S1CON.STO = 1, set STOP bus condition
Exit ISR, finished receiving data from Slave
If No, continue:
I
2
C interface
131/293