ST7LIT15BF0 STMicroelectronics, ST7LIT15BF0 Datasheet - Page 79

• Manufacturer Part Number: ST7LIT15BF0
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 5 TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7LIT15BF0

• Up To 4 Kbytes Single Voltage Extended Flash (xflash) 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.
• 128 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 (on ST7FLITE15B and ST7FLITE19B), crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Auto Wake-up from Halt, Wait and Slow

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 and an 8-bit input capture register.
11.3.2 Main Features
■
Figure 51. 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
REGISTER
COUNTER 1
REGISTER
OSC
8-bit
)
8
8
LTCSR1
ICIE
f
LTIMER
LTCSR2
/2
ICF
0
TB
1
0
0
Timebase
1 or 2 ms
(@ 8 MHz
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 wake-up 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
ST7LITE1xB
OSC
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)
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