ST72F621L4M1 STMicroelectronics, ST72F621L4M1 Datasheet - Page 28

• Manufacturer Part Number: ST72F621L4M1
• Description: IC MCU 8BIT LS 16K 34-SOIC
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F621L4M1

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 34-SOIC (7.5mm Width)
• Processor Series: ST72F6x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: SCI, SPI, USB
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 2
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: In Transition
• Other names: 497-2112-5

ST7262xxx
INTERRUPTS (Cont’d)
INTERRUPT REGISTER 1 (ITRFRE1)
Address: 0008h - Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:0 = ITiE Interrupt Enable
0: I/O pin free for general purpose I/O
1: ITi external interrupt enabled.
Note: The corresponding interrupt is generated
when:
– a rising edge occurs on the IT5/IT6 pins
– a falling edge occurs on the IT1, 2, 3, 4, 7 and 8
INTERRUPT REGISTER 2 (ITRFRE2)
Address: 0039h - Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:6 = CTL[3:2] IT[12:11] Interrupt Sensitivity
These bits are set and cleared by software. They
are used to configure the edge and level sensitivity
of the IT12 and IT11 external interrupt pins (this
means that both must have the same sensitivity).
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CTL3 CTL2 CTL1 CTL0 IT12E IT11E IT10E IT9E
IT8E
CTL3
0
0
1
1
pins
7
7
IT7E
CTL2
0
1
0
1
IT6E
IT[12:11] Sensitivity
Falling edge and low level
Rising edge only
Falling edge only
Rising and falling edge
IT5E
IT4E
IT3E
IT2E
IT1E
0
0
Doc ID 6996 Rev 5
Bit 5:4 = CTL[1:0] IT[10:9]1nterrupt Sensitivity
These bits are set and cleared by software. They
are used to configure the edge and level sensitivity
of the IT10 and IT9 external interrupt pins (this
means that both must have the same sensitivity).
Bit 3:0 = ITiE Interrupt Enable
0: I/O pin free for general purpose I/O
1: ITi external interrupt enabled.
CTL1
0
0
1
1
CTL0
0
1
0
1
IT[10:9] Sensitivity
Falling edge and low level
Rising edge only
Falling edge only
Rising and falling edge