參數(shù)資料
型號(hào): DSP56858VF120
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: 16-bit Digital Signal Controllers
中文描述: 16位數(shù)字信號(hào)控制器
文件頁(yè)數(shù): 40/64頁(yè)
文件大小: 956K
代理商: DSP56858VF120
56858 Technical Data, Rev. 6
40
Freescale Semiconductor
4.9 Serial Peripheral Interface (SPI) Timing
1. Parameters listed are guaranteed by design.
Figure 4-23 SPI Timing
1
Operating Conditions: V
SS
= V
SSIO
= V
SSA
= 0 V, V
DD
= 1.62-1.98V, V
DDIO
= V
DDA
=
3.0–3.6V, T
A
= –40
°
to +120
°
C, C
L
50pF, f
op
= 120MHz
Characteristic
Symbol
Min
Max
Unit
See Figure
Cycle time
Master
Slave
t
C
25
25
ns
ns
4-24
,
4-25
,
4-26
,
4-27
Enable lead time
Master
Slave
t
ELD
12.5
ns
ns
4-27
Enable lag time
Master
Slave
t
ELG
12.5
ns
ns
4-27
Clock (SCLK) high time
Master
Slave
t
CH
9
12.5
ns
ns
4-24
,
4-25
,
4-26
,
4-27
Clock (SCLK) low time
Master
Slave
t
CL
12
12.5
ns
ns
4-27
Data set-up time required for inputs
Master
Slave
t
DS
10
2
ns
ns
4-24
,
4-25
,
4-26
,
4-27
Data hold time required for inputs
Master
Slave
t
DH
0
2
ns
ns
4-24
,
4-25
,
4-26
,
4-27
Access time (time to data active from high-impedance state)
Slave
t
A
5
15
ns
ns
4-27
Disable time (hold time to high-impedance state)
Slave
t
D
2
9
ns
ns
4-27
Data valid for outputs
Master
Slave (after enable edge)
t
DV
2
14
ns
ns
4-24
,
4-25
,
4-26
,
4-27
Data invalid
Master
Slave
t
DI
0
0
ns
ns
4-24
,
4-25
,
4-26
,
4-27
Rise time
Master
Slave
t
R
11.5
10.0
ns
ns
4-24
,
4-25
,
4-26
,
4-27
Fall time
Master
Slave
t
F
9.7
9.0
ns
ns
4-24
,
4-25
,
4-26
,
4-27
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