MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 206

• 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

Analog-to-Digital Converter (ATD)
16.6.9 ATD Result Registers
Read: Anytime
Write: Has no meaning or effect
ADRxH7–ADRxH0 — ATD Conversion Result Bits
16.7 Low-Power Options
This section describes the three low-power modes:
16.7.1 Run Mode
Clearing the ATD power-up bit, ADPU, in ATD control register 2 (ATDCTL2) reduces power consumption
in run mode. ATD registers are still accessible, but the clock to the ATD is disabled and ATD analog
circuits are powered down.
16.7.2 Wait Mode
ATD operation in wait mode depends on the state of the ATD stop in wait bit, AWAI, in ATD control register
2 (ATDCTL2).
206
These bits contain the left justified, unsigned result from the ATD conversion. The channel from which
this result was obtained depends on the conversion mode selected. These registers are always
read-only in normal mode.
•
•
•
•
•
Run mode
Wait mode
Stop mode
If AWAI is clear, the ATD operates normally when the CPU is in wait mode
If AWAI is set, the ATD clock is disabled and conversion continues unless ASWAI bit in ATDCTL2
register is set.
Address:
Reset:
Read:
Write:
ADRxH7
Bit 7
ADR0H:
ADR1H:
ADR2H:
ADR3H:
ADR4H:
ADR5H:
ADR6H:
ADR7H:
Figure 16-13. ATD Result Registers (ADR0H–ADR7H)
$0070
$0072
$0074
$0076
$0078
$007A
$007C
$007E
= Unimplemented
ADRxH6
6
MC68HC812A4 Data Sheet, Rev. 7
ADRxH5
5
ADRxH4
4
Indeterminate
ADRxH3
3
ADRxH2
2
ADRxH1
1
Freescale Semiconductor
ADRxH0
Bit 0