MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 199

• 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

In both modes, the CCF flag associated with each register is set when that register is loaded with the
appropriate conversion result. That flag is cleared automatically when that result register is read. The
conversions are started by writing to the control registers.
The ATD control register 4 selects the clock source and sets up the prescaler. Writes to the ATD control
registers initiate a new conversion sequence. If a write occurs while a conversion is in progress, the
conversion is aborted and ATD activity halts until a write to ATDCTL5 occurs.
The ATD control register 5 selects conversion modes and conversion channel(s) and initiates
conversions.
A write to ATDCTL5 initiates a new conversion sequence. If a conversion sequence is in progress when
a write occurs, the sequence is aborted and the SCF and CCF flags are cleared.
16.6 Registers and Reset Initialization
This section describes the registers and reset initialization.
16.6.1 ATD Control Register 0
16.6.2 ATD Control Register 1
Freescale Semiconductor
Address: $0060
Address: $0061
Writing to this register aborts the current conversion sequence.
Reset:
Reset:
Read:
Read:
Write:
Write:
Bit 7
Bit 7
0
0
0
0
Figure 16-3. ATD Control Register 0 (ATDCTL0)
Figure 16-4. ATD Control Register 1 (ATDCTL1)
= Unimplemented
6
0
0
6
0
0
MC68HC812A4 Data Sheet, Rev. 7
5
0
0
5
0
0
NOTE
4
0
0
4
0
0
3
0
0
3
0
0
2
0
0
2
0
0
Registers and Reset Initialization
1
0
0
1
0
0
Bit 0
Bit 0
0
0
0
0
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