L9963T datasheet(26/45 Pages) STMICROELECTRONICS

26 / 45 page

Symbol

Parameters

Test conditions Min

Typ

Max Unit

ISO_TX_IF

Interframe delay applied by L9963T to

the transimission of two consecutive

frames stored in the TXFIFO. Must be

always greater than ISO_RX_EOF to

allow correct EOF recognition by the

L9963T receiver on the other side.

ISOFREQ = 0

(Slow ISO)

7.3

9.1

10.9

ISOFREQ = 1

(Fast ISO)

2.25

2.8

3.36

ISO_RX_EOF

Minimum inter-frame delay between

two consecutive received frames.

Marks the recognition of the EOF (End

Of Frame).

ISOFREQ = 0

(Slow ISO)

4.8

7.2

ISOFREQ = 1

(Fast ISO)

1.44

1.8

2.16

NMIN_ISO_WAKEUP_EDGES

Minimum number of isolated SPI

pulses that triggers a wake up.

Tested by SCAN

3.4.3

Serial Peripheral Interface (SPI)

The SPI pinout is listed in the following tables:

Table 19. L9963T Pin used as SPI

L9963T pin

SPI function

Configuration

SDI

Serial Data Input (SDI)

Digital Input

NCS

Chip Select (CS)

Digital Input. Active Low.

SCK

Serial Clock (SCK)

Digital Input.

SDO

Serial Data Out (SDO)

Digital Output

Table 20. SPI interface quick look

Parameter

Description

Single Frame Length

NBIT_PER_FRAME_RANGE

Max. Frequency

10 MHz (NSLAVE = 0), 8 MHz (NSLAVE = 1)

CPOL

‘0’ (NSLAVE = 0); CPOL (NSLAVE = 1)

CPHA

‘1’ (NSLAVE = 0); CPHA (NSLAVE = 1)

Master or Slave configuration

Slave (NSLAVE = 0); Master (NSLAVE = 1)

3.4.3.1

Electrical parameters - SPI

All parameters are tested and guaranteed in the following conditions, unless otherwise specified: 4.5 V ≤ VVDD ≤

5.5 V ; -40 °C < Tj < 105 °C

Table 21. SPI electrical parameters

Symbol

Parameters

Test conditions

Min

Typ Max Unit

Note

Parameters for L9963T SPI Slave (NSLAVE =0)

FCLK_SPI

CLK frequency (50% duty

cycle)

Application info

MHz -

Tcll

Minimum time CLK = LOW

Application info

42.5

Allocating a 15% clock

uncertainty to the SPI Master

Tclh

Minimum time CLK = HIGH

Application info

42.5

Allocating a 15% clock

uncertainty to the SPI Master

L9963T

Serial communication interface

DS13590 - Rev 4

page 26/45

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