Peripheral operating requirements and behaviors
Table 11. SWD full voltage range electricals (continued)
Symbol
Description
Min.
Max.
Unit
J1
SWD_CLK frequency of operation
• Serial wire debug
0
25
—
MHz
ns
J2
J3
SWD_CLK cycle period
SWD_CLK clock pulse width
• Serial wire debug
1/J1
20
—
ns
J4
J9
SWD_CLK rise and fall times
—
10
0
3
ns
ns
ns
ns
ns
SWD_DIO input data setup time to SWD_CLK rise
SWD_DIO input data hold time after SWD_CLK rise
SWD_CLK high to SWD_DIO data valid
SWD_CLK high to SWD_DIO high-Z
—
—
32
—
J10
J11
J12
—
5
J2
J4
J3
J3
SWD_CLK (input)
J4
Figure 4. Serial wire clock input timing
SWD_CLK
SWD_DIO
SWD_DIO
SWD_DIO
SWD_DIO
J9
J10
Input data valid
J11
Output data valid
J12
J11
Output data valid
Figure 5. Serial wire data timing
KL24 Sub-Family Data Sheet Data Sheet, Rev. 3, 9/19/2012.
24
Freescale Semiconductor, Inc.
FREESCALE [ Freescale ]
