UPSD3234A-40U6T STMicroelectronics, UPSD3234A-40U6T Datasheet - Page 74

• Manufacturer Part Number: UPSD3234A-40U6T
• Description: IC MCU 8032 64KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3234A-40U6T

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, UART/USART, USB
• Peripherals: LVR, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 288KB (288K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Standard serial interface (UART)
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Figure 28. Serial port Mode 1 block diagram
Figure 29. Serial port Mode 1 waveforms
SMOD
RCLK
TCLK
Sample Times
Write to SBUF
Overflow
Timer1
÷2
Bit Detector
Rx Clock
Tx Clock
0
Send
Data
Shift
Shift
RxD
TxD
1
T1
RI
0
0
1
1
Overflow
Timer2
RxD
SBUF
Write
to
Start Bit
S1P1
Start Bit
÷16 Reset
Transition
Detector
D0
D0
1-to-0
UPSD3234A, UPSD3234BV, UPSD3233B, UPSD3233BV
Sample
D1
D1
÷16
Interrupt
Serial
Port
D2
Rx Detector
D2
D
CL
TB8
S
Rx Clock
D3
D3
Tx Clock
Start
Start
SBUF
Read
Q
÷16
SBUF
Load
D4
D4
Zero Detector
Rx Control
Tx Control
Input Shift Register
D5
D5
Internal Bus
Internal Bus
TI
RI
SBUF
SBUF
1FFh
D6
D6
Shift
Load SBUF
D7
D7
Send
Data
Shift
Shift
Stop Bit
Stop Bit
AI06826
AI06843
Transmit
Receive
TxD