ST7LITE49M STMicroelectronics, ST7LITE49M Datasheet - Page 102
ST7LITE49M
Manufacturer Part Number
ST7LITE49M
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST7LITE49M.pdf
(187 pages)
Specifications of ST7LITE49M
4 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
128 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
A/d Converter
10 input channels
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On-chip peripherals
11.3
11.3.1
11.3.2
102/188
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 and an 8-bit input capture register.
Main features
●
●
●
Figure 53. Lite timer 2 block diagram
LTIC
Real-time clock
–
–
–
Input capture
–
Maskable interrupt with wakeup from Halt mode capability
f
OSC
/32
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 1.024 ms in 4 µs increments (@ 8 MHz f
2 maskable timebase interrupts
8-bit input capture register (LTICR)
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
Doc ID 13562 Rev 3
f
LTIMER
LTCSR2
/2
ICF
0
TB
0
1
0
Timebase
1 or 2 ms
(@ 8 MHz
f
OSC
TB1IE
0
)
TB1F
0
OSC
0
LTIC INTERRUPT REQUEST
LTTB1 INTERRUPT REQUEST
)
0
TB2IE
f
LTIMER
TB2F
To 12-bit AT TImer
LTTB2
Interrupt request
OSC
)
ST7LITE49M
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