參數(shù)資料
型號: ST72124J2B7
廠商: 意法半導(dǎo)體
英文描述: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
中文描述: 8位單電壓閃存,ADC和16位定時器,SPI和脊髓損傷界面微控制器
文件頁數(shù): 112/125頁
文件大小: 776K
代理商: ST72124J2B7
ST72334J/N, ST72314J/N, ST72124J
112/125
MEMORY AND PERIPHERAL CHARACTERISTICS
(Cont’d)
Figure 59. SPI Master Timing Diagram CPHA=0, CPOL=0
2)
Notes:
1)
Data based on characterization results, not tested in production.
2)
Measurement points are V
OL
, V
OH
, V
IL
and V
IH
in the SPI timing diagram.
SPI Serial Peripheral Interface
Ref.
Symbol
Parameter
Condition
Value
1)
Unit
Min
Max
f
SPI
SPI frequency
Master
Slave
Master
Slave
Slave
Slave
Master
Slave
Master
Slave
Master
Slave
Master
Slave
1/128
dc
4
2
120
120
100
90
100
90
100
100
100
100
1/4
1/2
f
CPU
1
t
SPI
SPI clock period
t
CPU
2
3
t
Lead
t
Lag
Enable lead time
Enable lag time
ns
ns
4
t
SPI_H
Clock (SCK) high time
ns
5
t
SPI_L
Clock (SCK) low time
ns
6
t
SU
Data set-up time
ns
7
t
H
Data hold time (inputs)
ns
8
t
A
Access time (time to data active
from high impedance state)
Disable time (hold time to high im-
pedance state)
Slave
0
120
ns
9
t
Dis
240
ns
10
t
V
Data valid
Master (before capture edge)
Slave (after enable edge)
Master (before capture edge)
Slave (after enable edge)
Outputs: SCK,MOSI,MISO
Inputs: SCK,MOSI,MISO,SS
Outputs: SCK,MOSI,MISO
Inputs: SCK,MOSI,MISO,SS
0.25
120
t
CPU
ns
t
CPU
ns
ns
μ
s
ns
μ
s
11
t
Hold
Data hold time (outputs)
0.25
0
12
t
Rise
Rise time
(20% V
DD
to 70% V
DD
, C
L
=200pF)
Fall time
(70% V
DD
to 20% V
DD
, C
L
=200pF)
100
100
100
100
13
t
Fall
1
6
7
10
11
12
13
SS
(INPUT)
SCK
(OUTPUT)
MISO
(INPUT)
MOSI
(OUTPUT)
4
5
D7-OUT
D6-OUT
D0-OUT
D7-IN
D6-IN
D0-IN
VR000109
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