ATSAM4LS4BA-AU 查看數據表（PDF） - Atmel Corporation

零件编号

产品描述 (功能)

生产厂家

ATSAM4LS4BA-AU

ATSAM ARM-based Flash MCU

Atmel Corporation 

ATSAM4L8/L4/L2

Figure 9-16. SPI Slave Mode, NPCS Timing

SPCK, CPOL=0

SPCK, CPOL=1

NPCS

SPI12

SPI14

SPI13

SPI15

Table 9-63. SPI Timing, Slave Mode(1)

Symbol

Parameter

Conditions

Min

Max

SPI6

SPCK falling to MISO delay

19

47

SPI7

MOSI setup time before SPCK rises

0

SPI8

MOSI hold time after SPCK rises

5.4

SPI9

SPCK rising to MISO delay

VVDDIO from

19

46

2.85V to 3.6V,

SPI10

MOSI setup time before SPCK falls

maximum

0

SPI11

MOSI hold time after SPCK falls

external

5.3

capacitor =

SPI12

NPCS setup time before SPCK rises

40 pF

4

SPI13

NPCS hold time after SPCK falls

2.5

SPI14

NPCS setup time before SPCK falls

6

SPI15

NPCS hold time after SPCK rises

1.1

Note: 1. These values are based on simulation. These values are not covered by test limits in production.

Units

ns

Maximum SPI Frequency, Slave Input Mode

The maximum SPI slave input frequency is given by the following formula:

fSPCKMAX = MIN(fCLKSPI,S----P-1---I--n--)

Where SPIn is the MOSI setup and hold time, SPI7 + SPI8 or SPI10 + SPI11 depending on

CPOL and NCPHA. fCLKSPI is the maximum frequency of the CLK_SPI. Refer to the SPI chap-

ter for a description of this clock.

Maximum SPI Frequency, Slave Output Mode

The maximum SPI slave output frequency is given by the following formula:

fSPCKMAX = MIN(fPINMAX,-S---P----I--n-----+--1---t-S---E----T---U---P--)

42023GS–SAM–03/2014

148

Share Link: