M68EVB908GB60E Freescale Semiconductor, M68EVB908GB60E Datasheet - Page 109
![BOARD EVAL FOR MC9S08GB60](/photos/9/23/92369/m68evb908gb60e_sml.jpg)
M68EVB908GB60E
Manufacturer Part Number
M68EVB908GB60E
Description
BOARD EVAL FOR MC9S08GB60
Manufacturer
Freescale Semiconductor
Type
MCUr
Datasheet
1.M68EVB908GB60E.pdf
(290 pages)
Specifications of M68EVB908GB60E
Contents
Module and Misc Hardware
Processor To Be Evaluated
MC9S08GB
Data Bus Width
8 bit
Interface Type
RS-232
Silicon Manufacturer
Freescale
Core Architecture
HCS08
Core Sub-architecture
HCS08
Silicon Core Number
MC9S08
Silicon Family Name
S08GB
Kit Contents
GB60 Evaluation Kit
Rohs Compliant
Yes
For Use With/related Products
MC9S08GB60
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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7.3.9
The ICG provides a fixed frequency clock output, XCLK, for use by on-chip peripherals. This output is
equal to the internal bus clock, BUSCLK, in FBE mode. In FEE mode, XCLK is equal to ICGERCLK ÷ 2
when the following conditions are met:
If the above conditions are not true, then XCLK is equal to BUSCLK.
Freescale Semiconductor
1. CLKST will not update immediately after a write to CLKS. Several bus cycles are required before CLKST updates to the new
2. The reference frequency has no effect on ICGOUT in SCM, but the reference frequency is still used in making the comparisons
3. After initial LOCK; will be ICGDCLK/2R during initial locking process and while FLL is re-locking after the MFD bits are
(CLKST)
Actual
Mode
value.
that determine the DCOS bit
changed.
SCM
(XX)
FBE
FEE
(00)
(01)
(10)
(11)
FEI
Off
•
•
(P × N) ÷ R ≥ 4 where P is determined by RANGE (see
MFD and RFD, respectively (see
LOCK = 1.
Desired
Fixed Frequency Clock
(CLKS)
Mode
SCM
(XX)
FBE
FBE
FEE
FEE
FBE
FEE
FEE
(10)
(00)
(01)
(10)
(11)
(01)
(11)
(10)
(11)
(11)
FEI
FEI
Off
Range
X
X
X
X
X
X
X
X
0
0
0
1
(f
f
f
f
f
Frequency
Reference
ICGIRCLK
ICGIRCLK
ICGIRCLK
ICGIRCLK
REFERENCE
f
f
f
f
ICGIRCLK
ICGIRCLK
ICGERCLK
ICGERCLK
0
0
0
0
MC9S08GB/GT Data Sheet, Rev. 2.3
/7
/7
/7
/7
Table 7-3. ICG State Table
/7
/7
(2)
(1)
(1)
(1)
Table
)
Comparison
128/f
Cycle Time
2/f
7-6).
8/f
8/f
8/f
8/f
8/f
8/f
ICGERCLK
ICGIRCLK
ICGIRCLK
ICGIRCLK
ICGIRCLK
ICGIRCLK
ICGIRCLK
ICGERCLK
—
—
—
—
ICGDCLK/R
ICGDCLK/R
ICGERCLK/R
ICGERCLK/R
ICGDCLK/R
ICGDCLK/R
ICGDCLK/R
ICGDCLK/R
ICGDCLK/R
ICGDCLK/R
ICGOUT
Table
0
0
7-5), N and R are determined by
(3)
(2)
Not switching from
CLKS = CLKST
Conditions
ERCS = 1 and
ERCS = 1 and
FBE to SCM
DCOS = 1
DCOS = 1
DCOS = 1
ERCS = 1
for
—
—
—
—
—
—
—
Functional Description
(1)
DCOS = 0 or
LOCS = 1 &
ERCS = 0
DCOS = 0
ERCS = 0
ERCS = 0
ERCS = 0
ERCS = 1
Reason
CLKS ≠
CLKST
—
—
—
—
—
—
109
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