MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 207

• 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

16.7.3 Stop Mode
The ATD is inactive in stop mode for reduced power consumption. The STOP instruction aborts any
conversion sequence in progress.
16.8 Interrupt Sources
16.9 General-Purpose Ports
Port AD is an input-only port. When the ATD is enabled, port AD is the analog input port for the ATD.
Setting the ATD power-up bit, ADPU, in ATD control register 2 enables the ATD.
Port AD is available for general-purpose input when the ATD is disabled. Clearing the ADPU bit disables
the ATD.
16.10 Port AD Data Register
Read: Anytime; reads return logic levels on the PAD pins
Write: Has no meaning or effect
PAD7–PAD0 — Port AD Data Input Bits
Freescale Semiconductor
Address: $006F
Conversion sequence complete
The ASCIF flag is set only when a conversion sequence is completed and
ASCIE = 1 or interrupts on the analog-to-digital converter (ATD) module
are enabled.
Reset:
Read:
Write:
PAD7
Bit 7
0
Figure 16-14. Port AD Data Input Register (PORTAD)
Interrupt
Source
= Unimplemented
PAD6
6
0
Table 16-5. ATD Interrupt Sources
MC68HC812A4 Data Sheet, Rev. 7
PAD5
5
0
NOTE
PAD4
ASCIF
Flag
4
0
PAD3
Enable
ASCIE
Local
3
0
PAD2
Mask
CCR
I bit
2
0
PAD1
$FFD2, $FFD3
1
0
Address
Vector
PAD0
Bit 0
0
Interrupt Sources
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