STM32G474PBY3TR datasheet(137/236 Pages) STMICROELECTRONICS

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DS12288 Rev 5

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STM32G474xB STM32G474xC STM32G474xE

Electrical characteristics

200

5.3.17

Extended interrupt and event controller input (EXTI) characteristics

The pulse on the interrupt input must have a minimal length in order to guarantee that it is

detected by the event controller.

Table 62. HRTIM output response to external events 1 to 10 (Synchronous mode (1))

Symbol

Parameter

Conditions

Min. Typ. Max.(2)

Unit

tLAT(DEEV)

Digital external event

response latency

Propagation delay from HRTIM1_EEVx

digital input to HRTIM_CHxy output pin

(30pF load) (3)

-56

tLAT(AEEV)

Analog external event

response latency

Propagation delay from COMPx_INP

input pin to HRTIM_CHxy output pin

(30pF load) (3)

-62

tW(EEV)

Minimum external event

pulse width

-7

TJIT(EEV)

External event response

jitter

Jitter of the delay from HRTIM1_EEVx

digital input or COMPx_INP to

HRTIM_CHxy output pin

tHRTIM (4)

1. EExFAST bit in HRTIM_EECR1 or HRTIM_EECR2 register is cleared (synchronous mode). External event filtering is

disabled, i.e. EExF[3:0]=0000 in HRTIM_EECR2 register. Refer to Latency to external events paragraph in HRTIM section

of RM0440.

2. Data based on characterization results, not tested in production.

3. This parameter is given for fHRTIM = 170 MHz.

4. THRTIM = 1 / fHRTIM with fHRTIM= 170 MHz.

Table 63. HRTIM synchronization input / output(1)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

tW(SYNCIN)

Minimum pulse width on

SYNCIN inputs, including

HRTIM_SCIN

-2

tHRTIM

tRES(ESR)

Response time to external

synchronization request

--3

tHRTIM

tW(SYNCOUT)

Pulse width on

HRTIM_SCOUT output

tHRTIM

fHRTIM=170 MHz

94.1

1. Guaranteed by design, not tested in production.

Table 64. EXTI input characteristics(1)

1. Guaranteed by design.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

PLEC

Pulse length to event

controller

-20

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