SPC56EC74L7 datasheet(102/118 Pages) STMICROELECTRONICS

No de pièce	SPC56EC74L7

Description	32-bit MCU family built on the Power Architecture® for automotive body electronics applications

PDF	118 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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102 / 118 page

Electrical Characteristics

SPC564Bxx - SPC56ECxx

102/118

Doc ID 17478 Rev 4

Figure 33. DSPI PCS strobe (PCSS) timing

4.19.3

Nexus characteristics

CSx

PCSS

Note: Numbers shown reference Table 50.

Table 51.

Nexus debug port timing(1)

Spec

Characteristic

Symbol

Min

Max

Unit

MCKO Cycle

Time(2)

tMCYC

16.3

—

MCKO Duty

Cycle

tMDC

MCKO Low to

MDO, MSEO,

EVTO Data

Valid(3)

tMDOV

–0.1

0.25

tMCYC

EVTI Pulse Width

tEVTIPW

4.0

—

tTCYC

EVTO Pulse

Width

tEVTOPW

1tMCYC

TCK Cycle

Time(4)

tTCYC

—

TCK Duty Cycle

tTDC

TDI, TMS Data

Setup Time

tNTDIS, tNTMSS

8—

TDI, TMS Data

Hold Time

tNTDIH, tNTMSH

5—

TCK Low to TDO

Data Valid

tJOV

025

JTAG specifications in this table apply when used for debug functionality. All Nexus timing relative to MCKO is measured

from 50% of MCKO and 50% of the respective signal. Nexus timing specified at VDDE = 4.0 – 5.5 V, TA =TL to TH, and

CL = 30 pF with SRC = 0b11.

MCKO can run up to 1/2 of full system frequency. It can also run at system frequency when it is <60 MHz.

MDO, MSEO, and EVTO data is held valid until next MCKO low cycle.

The system clock frequency needs to be three times faster than the TCK frequency.

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