MC912DG128ACPVE Freescale Semiconductor, MC912DG128ACPVE Datasheet - Page 166

• Manufacturer Part Number: MC912DG128ACPVE
• Description: IC MCU 128K FLASH 8MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC912DG128ACPVE

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: CAN, I²C, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x8/10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• Processor Series: HC912D
• Core: HC12
• Data Bus Width: 16 bit
• Data Ram Size: 8 KB
• Interface Type: CAN/I2C/SCI/SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 69
• Number Of Timers: 8
• Operating Supply Voltage: - 0.3 V to + 6.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 2 (8-ch x 10-bit)
• Package: 112LQFP
• Family Name: HC12
• Maximum Speed: 8 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Clock Functions
12.6.2 No Clock at Power-On Reset
Technical Data
166
VDD
Power-On Detector
EXTALi
Clock Monitor Fail
Limp-Home
13-stage counter
(Clocked by XCLK)
BCSP
Internal reset
SYSCLK
SYSCLK
(Slow EXTALi)
The voltage level on VDDPLL determines how the MCU responds to an
external clock loss in this case.
With the VDDPLL supply voltage at VDD level, any reset sets the Clock
Monitor Enable bit (CME) and the PLLON bit and clears the NOLHM bit.
Therefore, if the MCU is powered up without an external clock, limp-
home mode is entered provided the MCU is in a normal mode of
operation.
Figure 12-4. No Clock at Power-On Reset
Freescale Semiconductor, Inc.
0 --> 4096
PLLCLK (L.H.)
For More Information On This Product,
PLLCLK (Software check of Limp-Home Flag)
Go to: www.freescale.com
Clock Functions
0 --> 4096
EXTALi
(Slow EXTALi)
MC68HC912DT128A — Rev 4.0
Reset: BCSP = 0
EXTALi
MOTOROLA