MMC2114CFCAG33 Freescale Semiconductor, MMC2114CFCAG33 Datasheet - Page 262

• Manufacturer Part Number: MMC2114CFCAG33
• Description: IC MCU 32BIT 33MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCorer

Specifications of MMC2114CFCAG33

• Core Processor: M210
• Core Size: 32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 67
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Processor Series: MMC2114
• Core: M-CORE
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: SCI/SPI
• Maximum Clock Frequency: 33 MHz
• Number Of Programmable I/os: 104
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Controller Family/series: MCORE
• No. Of I/o's: 104
• Ram Memory Size: 32KB
• Cpu Speed: 33MHz
• No. Of Timers: 2
• Embedded Interface Type: SCI, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Clock Module
11.8.4.1 Alternate Clock Selection
Advance Information
262
Depending on which clock source fails, the loss-of-clock circuit switches
the system clocks source to the remaining operational clock. The
alternate clock source generates the system clocks until reset is
asserted. As
of lock and into self-clocked mode (SCM). The PLL remains in SCM until
the next reset. When the PLL is operating in SCM, the system frequency
depends on the value in the RFD field. The SCM system frequency
stated in electrical specifications assumes that the RFD has been
programmed to binary 000. If the loss-of-clock condition is due to PLL
failure, the PLL reference becomes the system clocks source until the
next reset, even if the PLL regains and relocks.
A special loss-of-clock condition occurs when both the reference and the
PLL fail. The failures may be simultaneous, or the PLL may fail first. In
either case, the reference clock failure takes priority and the PLL
attempts to operate in SCM. If successful, the PLL remains in SCM until
the next reset. If the PLL cannot operate in SCM, the system remains
static until the next reset. Both the reference and the PLL must be
functioning properly to exit reset.
1. The LOC circuit monitors the reference and feedback inputs to the PFD. See
External
Clock
Freescale Semiconductor, Inc.
Mode
PLL
For More Information On This Product,
Go to: www.freescale.com
Before Failure
System Clock
Table 11-7
External clock
Source
Table 11-7. Loss of Clock Summary
PLL
Clock Module
shows, if the reference fails, the PLL goes out
PLL self-clocked mode
Circuit
Reference Failure
Selected by LOC
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
Alternate Clock
(1)
None
Until Reset
Alternate Clock
PLL reference
Selected by
LOC Circuit
PLL Failure
Until Reset
NA
Figure
MOTOROLA
11-8.