ST7LITE25F2 STMicroelectronics, ST7LITE25F2 Datasheet - Page 65
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ST7LITE25F2
Manufacturer Part Number
ST7LITE25F2
Description
8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
Manufacturer
STMicroelectronics
Datasheet
1.ST7LITE20F2.pdf
(133 pages)
Specifications of ST7LITE25F2
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
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11.3 LITE TIMER 2 (LT2)
11.3.1 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.
11.3.2 Main Features
■
Figure 40. Lite Timer 2 Block Diagram
LTIC
Realtime Clock
– One 8-bit upcounter 1 ms or 2 ms timebase
period (@ 8 MHz f
f
OSC
/32
LTARR
LTICR
LTCNTR
8-bit AUTORELOAD
INPUT CAPTURE
8-bit TIMEBASE
8-bit TIMEBASE
COUNTER 2
COUNTER 1
REGISTER
REGISTER
OSC
8-bit
)
8
8
LTCSR1
ICIE
f
LTIMER
LTCSR2
/2
ICF
0
TB
1
0
0
Timebase
1 or 2 ms
(@ 8MHz
f
OSC
TB1IE
■
0
)
– One 8-bit upcounter with autoreload and pro-
– 2 Maskable timebase interrupts
– 8-bit input capture register (LTICR)
– Maskable interrupt with wakeup from Halt
Input Capture
grammable timebase period from 4µs to
1.024ms in 4µs increments (@ 8 MHz f
Mode capability
TB1F
0
0
LTIC INTERRUPT REQUEST
LTTB1 INTERRUPT REQUEST
0
TB2IE
f
LTIMER
TB2F
To 12-bit AT TImer
LTTB2
Interrupt request
ST7LITE2
OSC
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)
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