ST7LITE20F2 STMicroelectronics, ST7LITE20F2 Datasheet - Page 37

• Manufacturer Part Number: ST7LITE20F2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7LITE20F2

• 8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55˚C.
• Clock Sources: Internal 1% RC oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt

INTERRUPTS (Cont’d)
Bit 3:2 = ei1[1:0] ei1 pin selection
These bits are written by software. They select the
Port A I/O pin used for the ei1 external interrupt ac-
cording to the table below.
External Interrupt I/O pin selection
* Reset State
Bits 1:0 = ei0[1:0] ei0 pin selection
These bits are written by software. They select the
ei11
0
0
1
1
ei10
0
1
0
1
I/O Pin
PA7*
PA4
PA5
PA6
Port A I/O pin used for the ei0 external interrupt ac-
cording to the table below.
External Interrupt I/O pin selection
* Reset State
Bits 1:0 = Reserved.
ei01
0
0
1
1
ei00
0
1
0
1
I/O Pin
PA0 *
PA1
PA2
PA3
ST7LITE2
37/133
1