UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 74

• 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

I/O ports of mcu module
Note:
17.1.4
74/293
1
Table 29.
Write '1' or '0' for pin output. Read for pin input, but prior to READ, this bit must have been
set to '1' by firmware or by a reset event.
Alternate Functions
There are five SFRs used to control the mapping of alternate functions onto MCU port pins,
and these SFRs are depicted as switches in
●
●
●
Since these SFRs are cleared by a reset, then by default all port pins function as GPIO (not
the alternate function) until firmware initializes these SFRs.
Each pin on each of the three ports can be independently assigned a different function on a
pin-by-pin basis.
The peripheral functions Timer 2, UART1, and I
1 and Port 4 for additional flexibility by giving a wider choice of peripheral usage on a limited
number of device pins.
When the selected alternate function is UART0, UART1, or SPI, then the related pins are in
quasi-bidirectional mode, including the use of the high-side driver for rapid 0-to-1 output
transitions. The high-side driver is enabled for just one MCU_CLK period on 0-to-1
transitions by the delay function at the “digital_alt_func_data_out” signal pictured in
Figure 17 on page 71
If the alternate function is Timer 0, Timer 1, Timer 2, or PCA input, then the related pins are
in quasi-bidirectional mode, but input only.
If the alternate function is ADC, then for each pin the pull-ups, the high-side driver, and the
low-side driver are disabled. The analog input is routed directly to the ADC unit. Only Port 1
supports analog functions
If the alternate function is I
quasi-bidirectional mode but the high-side driver is not enabled for one cycle when
Bit 7
P4.7
Bit
Port 3 uses the SFR, P3SFS
Port 1 uses SFRs, P1SFS0
Port 4 uses SFRs, P4SFS0
7
6
5
4
3
2
1
0
P4: I/O Port 4 Register (SFR C0h, reset value FFh)
Symbol
Bit 6
P4.6
P4.7
P4.6
P4.5
P4.4
P4.3
P4.2
P4.1
P4.0
through
Bit 5
P4.5
R/W
R,W
R,W
R,W
R,W
R,W
R,W
R,W
R,W
(Figure 17 on page
2
C, the related pins will be in open drain mode, which is just like
Figure 19 on page
(Table 31 on page
(Table 34 on page
(Table 30 on page
Bit 4
P4.4
Figure 16 on page
71). Port 1 is not 5V tolerant.
2
C may be split independently between Port
Bit 3
P4.3
72.
75) and P1SFS1
76) and P4SFS1
75).
Function
Port pin 4.7
Port pin 4.6
Port pin 4.5
Port pin 4.4
Port pin 4.3
Port pin 4.2
Port pin 4.1
Port pin 4.0
Bit 2
P4.2
71.
(1)
(Table 32 on page
(Table 35 on page
Bit 1
P4.1
uPSD34xx
Bit 0
P4.0
76).
76).