ST7PLITE35F2M6TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7PLITE35F2M6TR

8-bit MCU with single voltage Flash, data EEPROM, ADC, timers, SPI, LINSCI™

STMicroelectronics 

ST7LITE3xF2

DUAL 12-BIT AUTORELOAD TIMER 3 (Cont’d)

– At the second input capture on the falling edge of

the pulse, we assume that the values in the reg-

isters are as follows:

LTICR = LT2

ATICRH = ATH2

ATICRL = ATL2

Hence ATICR2 [11:0] = ATH2 & ATL2

Now pulse width P between first capture and sec-

ond capture will be:

P = decimal (F9 – LT1 + LT2 + 1) * 0.004ms + dec-

imal (ATICR2 - ATICR1 – 1) * 1ms

Figure 45. Long Range Input Capture Timing Diagram

fOSC/32

TB Counter1 F9h 00h LT1

F9h 00h _ _ _ _ _ _ _ _ _ LT2 _ _ _ _ _ _

CNTR1

___

ATH1 & ATL1

___

ATH2 & ATL2

LTIC

LTICR

00h

LT1

LT2

ATICRH

0h

ATH1

ATH2

ATICRL

00h

ATL1

ATL2

ATICR = ATICRH[3:0] & ATICRL[7:0]

11.2.4 Low Power Modes

Mode Description

SLOW The input frequency is divided by 32

WAIT No effect on AT timer

ACTIVE- AT timer halted except if CK0=1,

HALT CK1=0 and OVFIE=1

HALT AT timer halted.

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