MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 97

• 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

9.2.9 Port J Data Register
Read: Anytime
Write: Anytime
Port J is associated with key wakeup J. Key wakeups can be used with the pins designated as inputs or
outputs. DDRJ determines whether each pin is an input or output.
9.2.10 Port J Data Direction Register
Determines direction of each port J pin.
DDRJ7–DDRJ0 — Data Direction Port J Bits
9.2.11 Port J Key Wakeup Interrupt Enable Register
Read: Anytime
Write: Anytime
An interrupt is generated when a bit in the KWIFJ register and its corresponding KWIEJ bit are both set.
These bits correspond to the pins of port J. All eight bits/pins share the same interrupt vector.
KWIEJ7–KWIEF0 — Key Wakeup Port J Interrupt Enable Bits
Freescale Semiconductor
1 = Associated pin is an output.
0 = Associated pin is an input.
1 = Interrupt for the associated bit is enabled.
0 = Interrupt for the associated bit is disabled.
Alternate pin function:
Address: $0029
Address: $002A
Reset:
Reset:
Read:
Read:
Write:
Write:
Address: $0028
Reset:
Read:
Write:
KWIEJ7
DDRJ7
Bit 7
Bit 7
0
0
Figure 9-10. Port J Data Direction Register (DDRJ)
Figure 9-11. Port J Key Wakeup Interrupt Enable
KWJ7
Bit 7
PJ7
0
Figure 9-9. Port J Data Register (PORTJ)
KWIEJ6
DDRJ6
6
0
6
0
KWJ6
PJ6
MC68HC812A4 Data Sheet, Rev. 7
6
0
KWIEJ5
DDRJ5
5
0
5
0
Register (KWIEJ)
KWJ5
PJ5
5
0
KWIEJ4
DDRJ4
4
0
4
0
KWJ2
PJ4
4
0
KWIEJ3
DDRJ3
3
0
3
0
KWJ4
PJ3
3
0
KWIEJ2
DDRJ2
2
0
2
0
KWJ2
PJ2
2
0
KWIEJ1
DDRJ1
1
0
1
0
KWJ1
PJ1
1
0
Key Wakeup Registers
KWIEJ0
DDRJ0
Bit 0
Bit 0
0
0
KWJ0
Bit 0
PJ0
0
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