ST7LITE49K2 STMicroelectronics, ST7LITE49K2 Datasheet - Page 111

• Manufacturer Part Number: ST7LITE49K2
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST7LITE49K2

• 8 Kbytes Single Voltage Extended Flash (xflash) Program Memory With Read-out Protection In-circuit Programming And In-application Programming (icp And Iap) Endurance: 10K write/erase cycles guaranteed Data retention
• 256 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55 °C.
• 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

ST7LITE49K2
11.3.4
11.3.5
11.3.6
Low power modes
Table 39.
Interrupts
Table 40.
The TBxF and ICF interrupt events are connected to the same interrupt vector (see
Section 8:
They generate an interrupt if the enable bit is set in the LTCSR1 or LTCSR2 register and the
interrupt mask in the CC register is reset (RIM instruction).
Register description
Lite timer control/status register 2 (LTCSR2)
Reset value: 0000 0000 (00h)
Bits 7:2 = Reserved, must be kept cleared.
Bit 1 = TB2IE Timebase 2 Interrupt enable bit
Timebase 1 Event
Timebase 2 Event
Interrupt Event
This bit is set and cleared by software.
0: Timebase (TB2) interrupt disabled
1: Timebase (TB2) interrupt enabled
7
0
IC Event
Active-halt
Interrupts).
Mode
Slow
Effect of low power modes on Lite timer 2
Description of interrupt events
Wait
Halt
0
Event
TB1F
TB2F
Flag
ICF
0
Control
Enable
Read / Write
0
TB1IE
TB2IE
ICIE
(this peripheral is driven directly by f
Bit
Lite timer stops counting
No effect on Lite timer
No effect on Lite timer
No effect on Lite timer
0
from
Wait
Exit
Yes
Description
0
Active-halt
from
Exit
Yes
No
No
On-chip peripherals
TB2IE
OSC
/32)
from
Exit
Halt
TB2F
No
111/245
0