MC68HC908SR12CFA Freescale Semiconductor, MC68HC908SR12CFA Datasheet - Page 106

• Manufacturer Part Number: MC68HC908SR12CFA
• Description: MICROCONTROLLER 48 PIN
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908SR12CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, Temp Sensor
• Number Of I /o: 31
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Q1145673

Oscillator (OSC)
7.5 RC Oscillator
Data Sheet
106
The internal oscillator by default is always available and is free running
after POR or reset. It can be stopped in Stop mode by setting the
STOP_ICLKEN bit before executing the STOP instruction.
Figure 7-4
internal oscillator circuitry.
The RC oscillator circuit is designed for use with external R and C to
provide a clock source with tolerance less than 10%.
In its typical configuration, the RC oscillator requires two external
components, one R and one C. Component values should have a
tolerance of 1% or less, to obtain a clock source with less than 10%
tolerance. The oscillator configuration uses two components:
•
•
MCU
C
R
STOP_ICLKEN
EXT
EXT
CONFIG2
shows the logical representation of components of the
From SIM
Oscillator (OSC)
Figure 7-4. Internal Oscillator
SIMOSCEN
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
INTERNAL OSCILLATOR
To Clock Selection MUX
and COP
EN
ICLK
Freescale Semiconductor
BUS CLOCK
From SIM
OSC2