UPSD3433E-40U6 STMicroelectronics, UPSD3433E-40U6 Datasheet - Page 109

• Manufacturer Part Number: UPSD3433E-40U6
• Description: MCU 8BIT 8032 128KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3433E-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: 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 READER497-5218 - KIT DEVELOPMENT FOR UPSD3400497-2381 - CABLE PROGRAMMER FLASH LINK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-4907

UPSD3422, UPSD3433, UPSD3434, UPSD3454
21.2
Serial port control registers
The SFR SCON0 controls UART0, and SCON1 controls UART1, shown in
Table
for transmit and receive (bits TB8 and RB8), and the UART Interrupt flags, TI and RI.
Table 65.
Table 66.
Table 67.
Bit 7
Bit 7
SM0
SM0
Bit
7
6
5
4
3
2
1
0
67. These registers contain not only the mode selection bits, but also the 9th data bit
SCON0: serial port UART0 control register (SFR 98h, reset value 00h)
SCON0 register bit definition
SCON1: serial port UART1 control register (SFR D8h, reset value 00h)
Symbol
Bit 6
REN
Bit 6
SM1
SM0
SM1
SM2
SM1
TB8
RB8
RI
TI
R/W
R,W
R,W
R,W
R,W
R,W
R,W
R,W
R,W
Bit 5
Bit 5
SM2
SM2
Serial Mode Select, See
Important, notice bit order of SM0 and SM1.
[SM0:SM1] = 00b, Mode 0
[SM0:SM1] = 01b, Mode 1
[SM0:SM1] = 10b, Mode 2
[SM0:SM1] = 11b, Mode 3
Serial Multiprocessor Communication Enable.
Mode 0: SM2 has no effect but should remain 0.
Mode 1: If SM2 = 0 then stop bit ignored. SM2 =1 then RI active
if stop bit = 1.
Mode 2 and 3: Multiprocessor Comm Enable. If SM2=0, 9th bit
is ignored. If SM2=1, RI active when 9th bit = 1.
Receive Enable.
If REN=0, UART reception disabled. If REN=1, reception is
enabled
TB8 is assigned to the 9th transmission bit in Mode 2 and 3. Not
used in Mode 0 and 1.
Mode 0: RB8 is not used.
Mode 1: If SM2 = 0, the RB8 is the level of the received stop bit.
Mode 2 and 3: RB8 is the 9th data bit that was received in Mode
2 and 3.
Transmit Interrupt flag.
Causes interrupt at end of 8th bit time when transmitting in
Mode 0, or at beginning of stop bit transmission in other modes.
Must clear flag with firmware.
Receive Interrupt flag.
Causes interrupt at end of 8th bit time when receiving in Mode 0,
or halfway through stop bit reception in other modes (see SM2
for exception). Must clear this flag with firmware.
Bit 4
REN
Bit 4
REN
Bit 3
Bit 3
TB8
TB8
Table 64 on page
Definition
Bit 2
Bit 2
RB8
RB8
Serial UART interfaces
108.
Bit 1
Bit 1
TI
TI
Table 65
Bit 0
Bit 0
and
109/300
RI
RI