参数资料
型号: ST72311J2B6/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, SHRINK, PLASTIC, DIP-42
文件页数: 82/92页
文件大小: 624K
代理商: ST72311J2B6/XXX
83/92
ST72311
PERIPHERAL CHARACTERISTICS (Cont’d)
Measurement points are VOL,VOH,VIL and VIH in the SPI Timing Diagram
Figure 45. SPI Master Timing Diagram CPHA=0, CPOL=0
Serial Peripheral Interface
Ref.
Symbol
Parameter
Condition
Value
Unit
Min.
Max.
fSPI
SPI frequency
Master
Slave
1/128
dc
1/4
1/2
fCPU
1tSPI
SPI clock periode
Master
Slave
4
2
tCPU
2tLead
Enable lead time
Slave
120
ns
3tLag
Enable lag time
Slave
120
ns
4tSPI_H
Clock (SCK) high time
Master
Slave
100
90
ns
5tSPI_L
Clock (SCK) low time
Master
Slave
100
90
ns
6tSU
Data set-up time
Master
Slave
100
ns
7tH
Data hold time (inputs)
Master
Slave
100
ns
8tA
Access time (time to data active
from high impedance state)
Slave
0
120
ns
9tDis
Disable time (hold time to high im-
pedance state)
240
ns
10
tV
Data valid
Master (before capture edge)
Slave (after enable edge)
0.25
120
tCPU
ns
11
tHold
Data hold time (outputs)
Master (before capture edge)
Slave (after enable edge)
0.25
0
tCPU
ns
12
tRise
Rise time
(20% VDD to 70% VDD,CL = 200pF)
Outputs: SCK,MOSI,M ISO
Inputs: SCK,MOSI ,MISO, SS
100
ns
s
13
tFall
Fall time
(70% VDD to 20% VDD,CL = 200pF)
Outputs: SCK,MOSI,M ISO
Inputs: SCK,MOSI ,MISO, SS
100
ns
s
1
6
7
10
11
12
13
SS
(INPUT)
SCK
(OUTPUT)
MISO
MOSI
(INPUT)
(OUTPUT)
45
D7-OUT
D6-OUT
D0-OUT
D7-IN
D6-IN
D0-IN
VR000109
83
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