ST7FOXK1 STMicroelectronics, ST7FOXK1 Datasheet - Page 60

• Manufacturer Part Number: ST7FOXK1
• Description: Low cost flash 8bit micro
• Manufacturer: STMicroelectronics

Specifications of ST7FOXK1

• 4 To 8 Kbytes Single Voltage Extended Flash (xflash) Program Memory With Read-out Protection In-circuit Programming And In-application Programming (icp And Iap) Endurance: 1K write/erase cycles guaranteed Data retention
• Clock Sources: Internal trimmable 8 MHz RC oscillator, auto wakeup internal low power - low frequency oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Auto Wakeup from Halt, Wait and Slow
• A/d Converter: up to 10 input channels

Interrupts
7.5.3
Note:
60/226
2
1
External Interrupt Control register (EICR)
Reset value: 0000 0000 (00h)
Bits 7:6 = Reserved, must be kept cleared.
Bits 5:4 = IS2[1:0] ei2 sensitivity bits
Bits 3:2 = IS1[1:0] ei1 sensitivity bits
Bits 1:0 = IS0[1:0] ei0 sensitivity bits
These 8 bits can be written only when the I bit in the CC register is set.
Changing the sensitivity of a particular external interrupt clears this pending interrupt. This
can be used to clear unwanted pending interrupts. Refer to
function.
Table 19.
ISx1
0
0
1
1
These bits define the interrupt sensitivity for ei2 (Port C) according to
These bits define the interrupt sensitivity for ei1 (Port B) according to
These bits define the interrupt sensitivity for ei0 (Port A) according to
0
7
Interrupt sensitivity bits
ISx0
0
1
0
1
0
IS21
IS20
Read/write
External interrupt sensitivity
Falling edge & low level
Rising and falling edge
Falling edge only
Rising edge only
IS11
ST7FOXF1, ST7FOXK1, ST7FOXK2
Section : External interrupt
IS10
IS01
Table
Table
Table
19.
19.
19.
IS00
0