MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 176

• Manufacturer Part Number: MC812A4CPVE8
• Description: IC MCU 16BIT EEPROM 4K 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC812A4CPVE8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 83
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: EEPROM
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• Processor Series: HC812A
• Core: HC12
• Data Bus Width: 16 bit
• Data Ram Size: 1 KB
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 91
• Number Of Timers: 8
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 8 Channel
• Controller Family/series: 68HC12
• No. Of I/o's: 91
• Eeprom Memory Size: 4KB
• Ram Memory Size: 1KB
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Serial Communications Interface Module (SCI)
14.10 Interrupt Sources
14.11 General-Purpose I/O Ports
Port S shares its pins with the multiple serial interface (MSI). In all modes, port S pins PS7–PS0 are
available for either general-purpose I/O or for SCI and SPI functions. See
Interface
14.12 Serial Character Transmission Using the SCI
Code is intended to use SCI1 to serially transmit characters using polling to the LCD display on the
UDLP1 board: when the transmission data register is empty a flag will get set, which is telling us that
SC1DR is ready so we can write another byte. The transmission is performed at a baud rate of 9600.
Since the SCI1 is only being used for transmit data, the data register will not be used bidirectionally for
received data.
14.12.1 Equipment
For this exercise, use the M68HC812A4EVB emulation board.
176
(MSI).
Transmit data register empty
Transmission complete
Receive data register full
Receiver overrun
Receiver idle
Interrupt
Source
Table 14-8. SCI Interrupt Sources
MC68HC812A4 Data Sheet, Rev. 7
TDRE
RDRF
IDLE
Flag
OR
TC
Enable
Local
TCIE
ILIE
TIE
RIE
Mask
CCR
I bit
I bit
I bit
I bit
$FFD6,
$FFD7
Chapter 13 Multiple Serial
SCI0
Address
Vector
$FFD4,
Freescale Semiconductor
$FFD5
SCI1