MC912DG128ACPV Freescale Semiconductor, MC912DG128ACPV Datasheet - Page 464

• Manufacturer Part Number: MC912DG128ACPV
• Description: IC MCU 128K FLASH 8MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC912DG128ACPV

• 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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Glossary
CPU cycles — A CPU cycle is one period of the internal bus clock, normally derived by dividing
CPU registers — Memory locations that are wired directly into the CPU logic instead of being
cycle time — The period of the operating frequency: t
D — See “accumulators (A and B or D).”
decimal number system — Base 10 numbering system that uses the digits zero through nine.
duty cycle — A ratio of the amount of time the signal is on versus the time it is off. Duty cycle is
ECT — See “enhanced capture timer.”
EEPROM — Electrically erasable, programmable, read-only memory. A nonvolatile type of
EPROM — Erasable, programmable, read-only memory. A nonvolatile type of memory that can
enhanced capture timer (ECT) — The HC12 Enhanced Capture Timer module has the features
exception — An event such as an interrupt or a reset that stops the sequential execution of the
Technical Data
464
a crystal oscillator source by two or more so the high and low times will be equal. The
length of time required to execute an instruction is measured in CPU clock cycles.
part of the addressable memory map. The CPU always has direct access to the
information in these registers. The CPU registers in an M68HC12 are:
usually represented by a percentage.
memory that can be electrically erased and reprogrammed.
be erased by exposure to an ultraviolet light source and then reprogrammed.
of the HC12 Standard Timer module enhanced by additional features in order to enlarge
the field of applications.
instructions in the main program.
•
•
•
•
•
•
•
A (8-bit accumulator)
B (8-bit accumulator)
–
IX (16-bit index register)
IY (16-bit index register)
SP (16-bit stack pointer)
PC (16-bit program counter)
CCR (8-bit condition code register)
D (16-bit accumulator formed by concatenation of accumulators A and B)
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
Glossary
CYC
= 1/f
OP
.
MC68HC912DT128A — Rev 4.0
MOTOROLA