MC68HC908RF2CFA Freescale Semiconductor, MC68HC908RF2CFA Datasheet - Page 72

• Manufacturer Part Number: MC68HC908RF2CFA
• Description: IC MCU W/UHF TX 2K FLASH 32LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908RF2CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: LVD, POR, PWM, RF Mod
• Number Of I /o: 12
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

Internal Clock Generator Module (ICG)
6.3.4.1 Clock Monitor Reference Generator
Data Sheet
72
EXTSLOW
ECGON
CMON
ICGEN
STOP
IBASE
ECLK
The clock monitor circuit, shown in
The clock monitor uses a reference based on one clock source to monitor the other
clock source. The clock monitor reference generator generates the external
reference clock (EREF) based on the external clock (ECLK) and the internal
reference clock (IREF) based on the internal clock (ICLK). To simplify the circuit,
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NAME
NAME
Clock monitor reference generator
Internal clock activity detector
External clock activity detector
Freescale Semiconductor, Inc.
Figure 6-4. Clock Monitor Block Diagram
For More Information On This Product,
Internal Clock Generator Module (ICG)
CONFIGURATION REGISTER BIT
TOP LEVEL SIGNAL
Go to: www.freescale.com
IREF
ECGEN
ECLK
CMON
ESTBCLK
FICGS
IBASE
ICGEN
EREF
IBASE
ICGON
EXTXTALEN
EXTSLOW
ECGS
ECGON
ECLK
CMON
Figure
DIVIDER
DETECTOR
ACTIVITY
DETECTOR
ACTIVITY
ICLK
ECLK
6-4, contains these blocks:
ESTBCLK
EREF
ECGS
EOFF
IOFF
ICGS
IREF
NAME
NAME
MC68HC908RF2 — Rev. 4.0
REGISTER BIT
MODULE SIGNAL
ECGS
EOFF
ICGS
IOFF
MOTOROLA