UPSD3433E-40U6 STMicroelectronics, UPSD3433E-40U6 Datasheet - Page 64

• 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

Interrupt system
13.1
13.1.1
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Figure 12. Enabling and polling interrupts
Individual interrupt sources
External interrupts Int0 and Int1
External interrupt inputs on pins EXTINT0 and EXTINT1 (pins 3.2 and 3.3) are either edge-
triggered or level-triggered, depending on bits IT0 and IT1 in the SFR named TCON.
When an external interrupt is generated from an edge-triggered (falling-edge) source, the
appropriate flag bit (IE0 or IE1) is automatically cleared by hardware upon entering the ISR.
When an external interrupt is generated from a level-triggered (low-level) source, the
appropriate flag bit (IE0 or IE1) is NOT automatically cleared by hardware.
Reserved
Interrupt
Sources
Timer 0
Timer 1
UART0
Timer 2
UART1
INT0
INT1
PCA
USB
ADC
SPI
Ext
Ext
I
2
C
Enable
Global
IE/IEA
UPSD3422, UPSD3433, UPSD3434, UPSD3454
IP/IPA
Priority
High
AI07844
Low