MC9S12C128VFU Freescale Semiconductor, MC9S12C128VFU Datasheet - Page 345
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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11.2.3
The XCLKS is an input signal which controls whether a crystal in combination with the internal Colpitts
(low power) oscillator is used or whether the Pierce oscillator/external clock circuitry is used. The XCLKS
signal is sampled during reset with the rising edge of RESET.
sampled XCLKS signal. Refer to the device overview chapter for polarity of the XCLKS pin.
Freescale Semiconductor
XCLKS — Colpitts/Pierce Oscillator Selection Signal
MCU
* Rs can be zero (shorted) when used with higher frequency crystals.
Refer to manufacturer’s data.
Figure 11-2. Pierce Oscillator Connections (XCLKS = 1)
Figure 11-3. External Clock Connections (XCLKS = 1)
EXTAL
XCLKS
XTAL
0
1
Table 11-1. Clock Selection Based on XCLKS
MCU
MC9S12C-Family / MC9S12GC-Family
EXTAL
Colpitts oscillator selected
Pierce oscillator/external clock selected
RS*
XTAL
RB
Not Connected
Rev 01.24
Description
CMOS-Compatible
External Oscillator
(V
Crystal or Ceramic
Resonator
DDPLL
Level)
Table 11-1
C3
C4
Chapter 11 Oscillator (OSCV2) Block Description
V
SSPLL
lists the state coding of the
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