MC9S12C128MFAE Freescale Semiconductor, MC9S12C128MFAE Datasheet - Page 346
![IC MCU 128K FLASH 25MHZ 48-LQFP](/photos/12/20/122066/mc9s12c128mfae_sml.jpg)
MC9S12C128MFAE
Manufacturer Part Number
MC9S12C128MFAE
Description
IC MCU 128K FLASH 25MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Specifications of MC9S12C128MFAE
Core Processor
HCS12
Core Size
16-Bit
Speed
25MHz
Connectivity
CAN, EBI/EMI, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
31
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.35 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Processor Series
S12C
Core
HCS12
Data Bus Width
16 bit
Data Ram Size
4 KB
Interface Type
CAN/SCI/SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
31
Number Of Timers
8
Operating Supply Voltage
3.3 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWHCS12
Development Tools By Supplier
M68EVB912C32EE
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
Package
48LQFP
Family Name
HCS12
Maximum Speed
25 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S12C128MFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 11 Oscillator (OSCV2) Block Description
11.3
The CRG contains the registers and associated bits for controlling and monitoring the OSCV2 module.
11.4
The OSCV2 block has two external pins, EXTAL and XTAL. The oscillator input pin, EXTAL, is intended
to be connected to either a crystal or an external clock source. The selection of Colpitts oscillator or Pierce
oscillator/external clock depends on the XCLKS signal which is sampled during reset. The XTAL pin is
an output signal that provides crystal circuit feedback.
A buffered EXTAL signal, OSCCLK, becomes the internal reference clock. To improve noise immunity,
the oscillator is powered by the V
The Pierce oscillator can be used for higher frequencies compared to the low power Colpitts oscillator.
11.4.1
The Colpitts oscillator is equipped with a feedback system which does not waste current by generating
harmonics. Its configuration is “Colpitts oscillator with translated ground.” The transconductor used is
driven by a current source under the control of a peak detector which will measure the amplitude of the
AC signal appearing on EXTAL node in order to implement an amplitude limitation control (ALC) loop.
The ALC loop is in charge of reducing the quiescent current in the transconductor as a result of an increase
in the oscillation amplitude. The oscillation amplitude can be limited to two values. The normal amplitude
which is intended for non power saving modes and a small amplitude which is intended for low power
operation modes. Please refer to the CRG block description chapter for the control and assignment of the
amplitude value to operation modes.
11.4.2
The clock monitor circuit is based on an internal resistor-capacitor (RC) time delay so that it can operate
without any MCU clocks. If no OSCCLK edges are detected within this RC time delay, the clock monitor
indicates a failure which asserts self clock mode or generates a system reset depending on the state of
SCME bit. If the clock monitor is disabled or the presence of clocks is detected no failure is indicated.The
clock monitor function is enabled/disabled by the CME control bit, described in the CRG block description
chapter.
11.5
OSCV2 contains a clock monitor, which can trigger an interrupt or reset. The control bits and status bits
for the clock monitor are described in the CRG block description chapter.
346
Memory Map and Register Definition
Functional Description
Interrupts
Amplitude Limitation Control (ALC)
Clock Monitor (CM)
DDPLL
MC9S12C-Family / MC9S12GC-Family
and V
SSPLL
Rev 01.24
power supply pins.
Freescale Semiconductor
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