MC912DG128AMPVE Freescale Semiconductor, MC912DG128AMPVE Datasheet - Page 281

• Manufacturer Part Number: MC912DG128AMPVE
• Description: IC MCU 128K FLASH 8MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC912DG128AMPVE

• 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 ~ 125°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
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 2 (8-ch x 10-bit)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SC0BDH/SC1BDH — SCI Baud Rate Control Register
SC0BDL/SC1BDL — SCI Baud Rate Control Register
16.4.3 SCI Register Descriptions
MC68HC912DT128A — Rev 4.0
MOTOROLA
RESET:
RESET:
BTST
SBR7
Bit 7
Bit 7
NOTE:
0
0
BSPL
SBR6
6
0
6
0
Control and data registers for the SCI subsystem are described below.
The memory address indicated for each register is the default address
that is in use after reset. Both SCI have identical control registers
mapped in two blocks of eight bytes.
SCxBDH and SCxBDL are considered together as a 16-bit baud rate
control register.
Read any time. Write SBR[12:0] anytime. Low order byte must be written
for change to take effect. Write SBR[15:13] only in special modes. The
value in SBR[12:0] determines the baud rate of the SCI. The desired
baud rate is determined by the following formula:
which is equivalent to:
BR is the value written to bits SBR[12:0] to establish baud rate.
The baud rate generator is disabled until TE or RE bit in SCxCR2
register is set for the first time after reset, and/or the baud rate generator
is disabled when SBR[12:0] = 0.
BTST — Reserved for test function
BSPL — Reserved for test function
BRLD — Reserved for test function
Freescale Semiconductor, Inc.
For More Information On This Product,
BRLD
SBR5
5
0
5
0
Go to: www.freescale.com
Multiple Serial Interface
SBR12
SBR4
4
0
4
0
SBR11
SCI Baud Rate
BR
SBR3
3
0
3
0
=
----------------------------------------------- -
16 SCI Baud Rate
×
SBR10
MCLK
SBR2
=
2
0
2
1
------------------- -
16 BR
MCLK
Serial Communication Interface (SCI)
×
SBR9
SBR1
1
0
1
0
Multiple Serial Interface
SBR8
SBR0
Bit 0
Bit 0
0
0
Technical Data
$00C0/$00C8
$00C1/$00C9
High
Low
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