MC912DG128ACPV Freescale Semiconductor, MC912DG128ACPV Datasheet - Page 360

• 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

MSCAN Controller
18.13.8 msCAN12 Transmitter Flag Register (CTFLG)
Technical Data
360
CTFLG
$0106
RESET
W
R
Bit 7
0
0
The Abort Acknowledge flags are read only. The Transmitter Buffer
Empty flags are read and clear only. A flag can be cleared by writing a1
to the corresponding bit position. Writing a zero has no effect on the flag
setting. The Transmitter Buffer Empty flags each have an associated
interrupt enable flag in the CTCR register. A hard or soft reset will reset
the register.
ABTAK2 – ABTAK0 — Abort Acknowledge
TXE2 – TXE0 —Transmitter Buffer Empty
ABTAK2
This flag acknowledges that a message has been aborted due to a
pending abort request from the CPU. After a particular message
buffer has been flagged empty, this flag can be used by the
application software to identify whether the message has been
aborted successfully or has been sent in the meantime. The flag is
reset implicitly whenever the associated TXE flag is set to 0.
This flag indicates that the associated transmit message buffer is
empty, thus not scheduled for transmission. The CPU must
handshake (clear) the flag after a message has been set up in the
transmit buffer and is due for transmission. The msCAN12 will set the
flag after the message has been sent successfully. The flag will also
be set by the msCAN12 when the transmission request was
successfully aborted due to a pending abort request
Transmitter Control Register
interrupt is pending while this flag is set.
Clearing this flag will also clear the corresponding Abort Acknowledge
flag (ABTAK, see above). Setting this flag will clear the corresponding
Abort Request flag (ABTRQ,
(CTCR)).
Freescale Semiconductor, Inc.
6
0
For More Information On This Product,
0 = The massage has not been aborted, thus has been sent out.
1 = The message has been aborted.
ABTAK1
Go to: www.freescale.com
5
0
MSCAN Controller
ABTAK0
4
0
msCAN12 Transmitter Control Register
(CTCR)). If not masked, a transmit
3
0
0
TXE2
MC68HC912DT128A — Rev 4.0
2
1
TXE1
(msCAN12
1
1
MOTOROLA
TXE0
Bit 0
1