ST72F344K4T6 STMicroelectronics, ST72F344K4T6 Datasheet - Page 61

• Manufacturer Part Number: ST72F344K4T6
• Description: MCU 8BIT 16KB FLASH MEM 32-LQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F344K4T6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Processor Series: ST72F3x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST72F34X-SK/RAIS, ST7MDT40-EMU3, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5611

ST72344xx ST72345xx
8.7
External interrupt control register (EICR)
Reset value: 0000 0000 (00h)
Bits 7:6 = IS1[1:0] ei2 and ei3 sensitivity
●
Table 18.
●
Table 19.
These 2 bits can be written only when I1 and I0 of the CC register are both set to 1 (level 3).
Bit 5 = IPB Interrupt polarity for port B
IS11
IS11
IS11
0
0
1
1
0
0
1
1
The interrupt sensitivity, defined using the IS1[1:0] bits, is applied to the following
external interrupts:
ei2 (port B3..0)
ei3 (port B4)
This bit is used to invert the sensitivity of the port B [3:0] external interrupts. It can be
set and cleared by software only when I1 and I0 of the CC register are both set to 1
(level 3).
0: No sensitivity inversion
1: Sensitivity inversion
7
External interrupt sensitivity (ei2)
External interrupt sensitivity (ei3)
IS10
IS10
0
1
0
1
0
1
0
1
IS10
IPB
Falling edge & low level
Doc ID 12321 Rev 5
Falling edge only
Rising edge only
IPB bit =0
IS21
Read/Write
Falling edge & low level
Rising and falling edge
Rising and falling edge
Falling edge only
Rising edge only
IS20
Sensitivity
Sensitivity
IPA
Rising edge & high level
Falling edge only
Rising edge only
IPB bit =1
0
Interrupts
0
0
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