CSM9S12XDT512SLK Freescale Semiconductor, CSM9S12XDT512SLK Datasheet - Page 996
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CSM9S12XDT512SLK
Manufacturer Part Number
CSM9S12XDT512SLK
Description
KIT STUDENT LEARNING 16BIT
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12XD64CAA.pdf
(1348 pages)
Specifications of CSM9S12XDT512SLK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Chapter 24 DG128 Port Integration Module (S12XDG128PIMV2)
24.0.5.9
Read: Anytime.
Write: Anytime.
The ECLKCTL register is used to control the availability of the free-running clocks and the free-running
clock divider.
998
EDIV[1:0]
NCLKX2
Reset
NECLK
1. Reset values in emulation modes are identical to those of the target mode.
Field
1–0
7
6
NS
NX
SS
ES
ST
EX
W
R
1
Dependent
NECLK
Mode
No ECLK — This bit controls the availability of a free-running clock on the ECLK pin. Clock output is always
active in emulation modes and if enabled in all other operating modes.
0 ECLK enabled
1 ECLK disabled
No ECLKX2 — This bit controls the availability of a free-running clock on the ECLKX2 pin. This clock has a fixed
rate of twice the internal bus clock. Clock output is always active in emulation modes and if enabled in all other
operating modes.
0 ECLKX2 is enabled
1 ECLKX2 is disabled
Free-Running ECLK Divider — These bits determine the rate of the free-running clock on the ECLK pin. The
usage of the bits is shown in
programmed in all other operating modes.
ECLK Control Register (ECLKCTL)
0
1
0
0
1
0
7
= Unimplemented or Reserved
NCLKX2
1
1
1
1
1
1
1
6
Figure 24-11. ECLK Control Register (ECLKCTL)
Table 24-12. ECLKCTL Field Descriptions
0
0
0
0
0
0
0
0
5
MC9S12XDP512 Data Sheet, Rev. 2.21
Table
24-13. Divider is always disabled in emulation modes and active as
0
0
0
0
0
0
0
0
4
Description
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
EDIV1
0
0
0
0
0
0
0
1
Freescale Semiconductor
EDIV0
0
0
0
0
0
0
0
0
Single-Chip
Single-Chip
Single-Chip
Expanded
Expanded
Emulation
Emulation
Special
Special
Normal
Normal
Mode
Test
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