ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 84

• Manufacturer Part Number: ST7DALIF2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7DALIF2

• 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.
• 256 Bytes Data Eeprom With Read-out Protection. 300k 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

Lite timer 2 (LT2)
15
15.1
15.2
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Lite timer 2 (LT2)
Introduction
The Lite Timer can be used for general-purpose timing functions. It is based on two free-
running 8-bit upcounters, an 8-bit input capture register.
Main features
■
■
Figure 39. Lite timer 2 block diagram
LTIC
Real-time clock
– One 8-bit upcounter 1 ms or 2 ms timebase period (@ 8 MHz f
– One 8-bit upcounter with autoreload and programmable timebase period from 4 µs to
– 2 Maskable timebase interrupts
Input Capture
– 8-bit input capture register (LTICR)
– Maskable interrupt with wakeup from Halt mode capability
1.024 ms in 4 µs increments (@ 8 MHz f
f
OSC2
/32
LTARR
LTICR
LTCNTR
8-bit AUTORELOAD
INPUT CAPTURE
8-bit TIMEBASE
8-bit TIMEBASE
COUNTER 2
REGISTER
COUNTER 1
REGISTER
8-bit
8
8
LTCSR1
ICIE
f
LTIMER
LTCSR2
/2
ICF
0
TB
1
0
0
Timebase
1 or 2 ms
(@ 8MHz
f
OSC2
TB1IE
0
)
OSC2
TB1F
0
)
0
LTIC INTERRUPT REQUEST
LTTB1 INTERRUPT REQUEST
0
TB2IE
f
LTIMER
TB2F
To 12-bit AT TImer
OSC2
LTTB2
Interrupt request
)
ST7DALIF2