MC9S12C128VFU Freescale Semiconductor, MC9S12C128VFU Datasheet - Page 266
MC9S12C128VFU
Manufacturer Part Number
MC9S12C128VFU
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12C128VFU.pdf
(690 pages)
Specifications of MC9S12C128VFU
Cpu Family
HCS12
Device Core Size
16b
Frequency (max)
25MHz
Interface Type
CAN/SCI/SPI
Program Memory Type
Flash
Program Memory Size
128KB
Total Internal Ram Size
4KB
# I/os (max)
60
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
2.5/5V
Operating Supply Voltage (max)
2.75/5.5V
Operating Supply Voltage (min)
2.35/2.97V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
80
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
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Chapter 9 Clocks and Reset Generator (CRGV4) Block Description
9.3.2.12
This register is used to restart the COP time-out period.
Read: always reads 0x0000
Write: anytime
When the COP is disabled (CR[2:0] = “000”) writing to this register has no effect.
When the COP is enabled by setting CR[2:0] nonzero, the following applies:
9.4
This section gives detailed informations on the internal operation of the design.
9.4.1
The PLL is used to run the MCU from a different time base than the incoming OSCCLK. For increased
flexibility, OSCCLK can be divided in a range of 1 to 16 to generate the reference frequency. This offers
a finer multiplication granularity. The PLL can multiply this reference clock by a multiple of 2, 4, 6,...
126,128 based on the SYNR register.
266
Module Base + 0x000B
Reset
W
R
Writing any value other than 0x0055 or 0x00AA causes a COP reset. To restart the COP time-out
period you must write 0x0055 followed by a write of 0x00AA. Other instructions may be executed
between these writes but the sequence (0x0055, 0x00AA) must be completed prior to COP end of
time-out period to avoid a COP reset. Sequences of 0x0055 writes or sequences of 0x00AA writes
are allowed. When the WCOP bit is set, 0x0055 and 0x00AA writes must be done in the last 25%
of the selected time-out period; writing any value in the first 75% of the selected period will cause
a COP reset.
Functional Description
Phase Locked Loop (PLL)
Bit 7
CRG COP Timer Arm/Reset Register (ARMCOP)
0
0
7
Although it is possible to set the two dividers to command a very high clock
frequency, do not exceed the specified bus frequency limit for the MCU.
If (PLLSEL = 1), Bus Clock = PLLCLK / 2
Bit 6
0
0
6
Figure 9-15. ARMCOP Register Diagram
PLLCLK
MC9S12C-Family / MC9S12GC-Family
Bit 5
0
0
5
=
2 OSCCLK
×
CAUTION
Rev 01.24
Bit 4
0
0
4
×
--------------------------------- -
[
[
REFDV
SYNR
Bit 3
0
0
3
+
+
1
1
]
]
Bit 2
0
0
2
Freescale Semiconductor
Bit 1
0
0
1
Bit 0
0
0
0
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