ST72F324J2TCRS View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72F324J2TCRS

8-bit MCU for automotive, 3.8 to 5.5V operating range with 8 to 32 Kbyte Flash, 10-bit ADC, 4 timers, SPI, SCI

STMicroelectronics 

ST72324xx-Auto

On-chip peripherals

Note: 1 After reading the ICiHR register, transfer of input capture data is inhibited and ICFi will never

be set until the ICiLR register is also read.

2 The ICiR register contains the free running counter value which corresponds to the most

recent input capture.

3 The two input capture functions can be used together even if the timer also uses the two

output compare functions.

4 In One pulse mode and PWM mode only Input Capture 2 can be used.

5 The alternate inputs (ICAP1 and ICAP2) are always directly connected to the timer. So any

transitions on these pins activates the input capture function.

Moreover if one of the ICAPi pins is configured as an input and the second one as an output,

an interrupt can be generated if the user toggles the output pin and if the ICIE bit is set.

This can be avoided if the input capture function i is disabled by reading the ICiHR (see

) note 1).

t(s 6 The TOF bit can be used with interrupt generation in order to measure events that go

c beyond the timer range (FFFFh).

u 7 In Flash devices, the ICAP2 registers (TAIC2HR, TAIC2LR) are not available on Timer A.

rod The corresponding interrupts cannot be used (ICF2 is forced by hardware to 0).

P Figure 39. Input capture block diagram

lete ICAP1

o pin

bs ICAP2

) - O pin

Edge Detect

circuit 2

Edge Detect

circuit 1

IC2R register

IC1R register

ICIE

ICF1

(Control register 1) CR1

IEDG1

ICF2

(Status register) SR

000

uct(s 16-bit

rod16-bit free running counter

(Control register 2) CR2

CC1 CC0 IEDG2

Obsolete P Figure 40. Input capture timing diagram

Timer clock

Counter register

FF01

FF02

FF03

ICAPi pin

ICAPi flag

ICAPi register

FF03

Note: The rising edge is the active edge.

Doc ID 13841 Rev 1

81/193

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