MC68HC908RF2CFA Freescale Semiconductor, MC68HC908RF2CFA Datasheet - Page 88

• 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)
6.7.1 ICG Control Register
Data Sheet
88
The ICG control register (ICGCR) contains the control and status bits for the
internal clock generator, external clock generator, and clock monitor as well as the
clock select and interrupt enable bits.
CMIE — Clock Monitor Interrupt Enable Bit
CMF — Clock Monitor Interrupt Flag
CMON — Clock Monitor On Bit
Address: $0036
Reset:
Read:
Write:
This read/write bit enables clock monitor interrupts. An interrupt will occur when
both CMIE and CMF are set. CMIE can be set when the CMON bit has been set
for at least one cycle. CMIE is forced clear when CMON is clear or during reset.
This read-only bit is set when the clock monitor determines that either ICLK or
ECLK becomes inactive and the CMON bit is set. This bit is cleared by first
reading the bit while it is set, followed by writing the bit low. This bit is forced
clear when CMON is clear or during reset.
This read/write bit enables the clock monitor. CMON can be set when both ICLK
and ECLK have been on and stable for at least one bus cycle (ICGON, ECGON,
ICGS, and ECGS are all set). CMON is forced set when CMF is set, to avoid
inadvertent clearing of CMF. CMON is forced clear when either ICGON or
ECGON is clear or during reset.
1 = Clock monitor interrupts enabled
0 = Clock monitor interrupts disabled
1 = Either ICLK or ECLK has become inactive.
0 = ICLK and ECLK have not become inactive since the last read of the
1 = Clock monitor output enabled
0 = Clock monitor output disabled
Freescale Semiconductor, Inc.
For More Information On This Product,
CMIE
ICGCR or the clock monitor is disabled.
Bit 7
0
Internal Clock Generator Module (ICG)
= Unimplemented
Go to: www.freescale.com
Figure 6-11. ICG Control Register (ICGCR)
CMF
6
0
CMON
5
0
CS
4
0
ICGON
3
1
ICGS
MC68HC908RF2 — Rev. 4.0
2
0
ECGON
1
0
MOTOROLA
ECGS
Bit 0
0