參數(shù)資料
型號: DSP56F827E
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: 16-bit Digital Signal Controllers
中文描述: 16位數(shù)字信號控制器
文件頁數(shù): 39/60頁
文件大?。?/td> 811K
代理商: DSP56F827E
Serial Peripheral Interface (SPI) Timing
56F827 Technical Data, Rev. 12
Freescale Semiconductor
39
3.9 Serial Peripheral Interface (SPI) Timing
1.
Parameters listed are guaranteed by design.
Table 3-12 SPI Timing
1
Operating Conditions:
V
SSIO
=V
SS
= V
SSA
= 0V, V
DDA
=V
DDIO
=3.0–3.6V, V
DD
= 2.25–2.75V, T
A
= –40
°
to +85
°
C, C
L
50pF, f
op
= 80MHz
Characteristic
Symbol
Min
Max
Unit
See Figure
Cycle time
Master
Slave
t
C
50
25
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
Enable lead time
Master
Slave
t
ELD
25
ns
ns
Figure
3-23
Enable lag time
Master
Slave
t
ELG
100
ns
ns
Figure
3-23
Clock (SCLK) high time
Master
Slave
t
CH
24
12
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
Clock (SCLK) low time
Master
Slave
t
CL
24.1
12
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
Data set-up time required for inputs
Master
Slave
t
DS
20
0
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
Data hold time required for inputs
Master
Slave
t
DH
0
2
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
Access time (time to data active from high-impedance state)
Slave
t
A
4.8
15
ns
Figure
3-23
Disable time (hold time to high-impedance state)
Slave
t
D
3.7
15.2
ns
Figure
3-23
Data Valid for outputs
Master
Slave (after enable edge)
t
DV
4.5
20.4
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
Data invalid
Master
Slave
t
DI
0
0
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
Rise time
Master
Slave
t
R
11.5
10.0
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
Fall time
Master
Slave
t
F
9.7
9.0
ns
ns
Figures
3-20
,
3-21
,
3-22
,
3-23
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