MC9S08QD2MSCR Freescale Semiconductor, MC9S08QD2MSCR Datasheet - Page 128

• Manufacturer Part Number: MC9S08QD2MSCR
• Description: IC MCU 8BIT 8-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08QD2MSCR

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 16MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 4
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-SOIC (3.9mm Width)
• Processor Series: S08QD
• Core: HCS08
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• 3rd Party Development Tools: EWS08
• Development Tools By Supplier: DEMO9S08QD4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

Internal Clock Source (S08ICSV1)
9.4
9.4.1
The seven states of the ICS are shown as a state diagram and are described below. The arrows indicate the
allowed movements between the states.
9.4.1.1
FLL engaged internal (FEI) is the default mode of operation and is entered when all the following
conditions occur:
In FLL engaged internal mode, the ICSOUT clock is derived from the FLL clock, which is controlled by
the internal reference clock. The FLL loop will lock the frequency to 512 times the filter frequency, as
selected by the RDIV bits. The ICSLCLK is available for BDC communications, and the internal reference
clock is enabled.
128
FLL Bypassed
External Low
Power(FBELP)
•
•
•
IREFS=0
CLKS=10
BDM Disabled
and LP=1
CLKS bits are written to 00
IREFS bit is written to 1
RDIV bits are written to divide trimmed reference clock to be within the range of 31.25 kHz to
39.0625 kHz.
Functional Description
Operational Modes
FLL Engaged Internal (FEI)
Entered from any state
when MCU enters stop
IREFS=0
CLKS=10
BDM Enabled
or LP =0
FLL Bypassed
External (FBE)
MC9S08QD4 Series MCU Data Sheet, Rev. 6
Figure 9-7. Clock Switching Modes
FLL Engaged
External (FEE)
FLL Engaged
Internal (FEI)
IREFS=1
CLKS=00
IREFS=0
CLKS=00
Stop
FLL Bypassed
Internal (FBI)
Returns to state that was active
before MCU entered stop, unless
reset occurs while in stop.
IREFS=1
CLKS=01
BDM Enabled
or LP=0
Freescale Semiconductor
FLL Bypassed
Internal Low
Power(FBILP)
IREFS=1
CLKS=01
BDM Disabled
and LP=1