mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 582

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Appendix A Electrical Characteristics
In
In
582
Num
Figure A-6
Table A-17
10
11
12
13
(CPOL = 0)
(CPOL = 1)
1
1
2
3
4
5
6
9
(OUTPUT)
(OUTPUT)
(OUTPUT)
(OUTPUT)
1.If configured as output
2. LSBF = 0. For LSBF = 1, bit order is LSB, bit 1, ..., bit 6, MSB.
(INPUT)
MISO
MOSI
SCK
SCK
SS
C
P
P
D
D
D
D
D
D
D
D
D
D
1
PORT DATA
the timing diagram for master mode with transmission format CPHA=1 is depicted.
the timing characteristics for master mode are listed.
SCK Frequency
SCK Period
Enable Lead Time
Enable Lag Time
Clock (SCK) High or Low Time
Data Setup Time (Inputs)
Data Hold Time (Inputs)
Data Valid after SCK Edge
Data Valid after SS fall (CPHA = 0)
Data Hold Time (Outputs)
Rise and Fall Time Inputs
Rise and Fall Time Outputs
9
2
4
MASTER MSB OUT
Table A-17. SPI Master Mode Timing Characteristics
5
Characteristic
MSB IN
1
Figure A-6. SPI Master Timing (CPHA=1)
2
6
4
MC9S12E256 Data Sheet, Rev. 1.08
2
12
12
11
BIT 6 . . . 1
BIT 6 . . . 1
Symbol
t
t
t
f
wsck
t
t
t
lead
vsck
t
t
t
t
sck
sck
t
vss
lag
su
ho
rfo
hi
rfi
13
13
MASTER LSB OUT
1/2048
Min
20
—
—
—
—
—
—
—
2
8
8
LSB IN
Typ
1/2
1/2
1/2
—
—
—
—
—
—
—
—
—
3
Freescale Semiconductor
PORT DATA
2048
Max
1 2
30
15
—
—
—
—
—
—
8
8
Unit
f
t
t
t
t
bus
bus
ns
ns
ns
ns
ns
ns
ns
sck
sck
sck