MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 65

• 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

6.3.3 Port B Data Register
Read: Anytime, if register is in the map
Write: Anytime, if register is in the map
Bits PB7–PB0 correspond to address lines ADDR7–ADDR0. When this port is not used for external
addresses such as in single-chip mode, these pins can be used as general-purpose I/O. DDRB
determines the primary direction of each pin. This register is not in the on-chip map in expanded and
peripheral modes.
6.3.4 Port B Data Direction Register
Read: Anytime, if register is in the map
Write: Anytime, if register is in the map
This register determines the primary direction for each port B pin when functioning as a general-purpose
I/O port. DDRB is not in the on-chip map in expanded and peripheral modes.
Freescale Semiconductor
1 = Associated pin is an output.
0 = Associated pin is a high-impedance input.
Expanded and peripheral:
Address: $0003
Reset:
Read:
Write:
Address: $0001
Reset:
Read:
Write:
DDRB7
Bit 7
0
Figure 6-4. Port B Data Direction Register (DDRB)
ADDR7
Bit 7
PB7
0
Figure 6-3. Port B Data Register (PORTB)
DDRB6
6
0
ADDR6
MC68HC812A4 Data Sheet, Rev. 7
PB6
6
0
DDRB5
5
0
ADDR5
PB5
5
0
DDRB4
4
0
ADDR4
PB4
4
0
DDRB3
3
0
ADDR3
PB3
3
0
DDRB2
2
0
ADDR2
PB2
2
0
DDRB1
1
0
ADDR1
PB1
1
0
DDRB0
Bit 0
0
ADDR0
Bit 0
PB0
0
Registers
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