MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 99

• 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

9.2.14 Port J Pullup/Pulldown Select Register
Read: Anytime
Write: Anytime
Each bit in the register corresponds to a port J pin. Each bit selects a pullup or pulldown device for the
associated port J pin. The pullup or pulldown is active only if enabled by the PULEJ register.
PUPSJ should be initialized before enabling the pullups/pulldowns (PUPEJ).
PUPSJ7–PUPSJ0 — Key Wakeup Port J Pullup/Pulldown Select Bits
9.2.15 Port J Pullup/Pulldown Enable Register
Read: Anytime
Write: Anytime
Each bit in the register corresponds to a port J pin. If a pin is configured as an input, each bit enables an
active pullup or pulldown device. PUPSJ selects whether a pullup or a pulldown is the active device.
PULEJ7–PULEJ0 — Key Wakeup Port J Pullup/Pulldown Enable Bits
Freescale Semiconductor
1 = Pullup is selected for the associated port J pin.
0 = Pulldown is selected for the associated port J pin.
1 = Selected pullup/pulldown device for the associated port J pin is enabled if it is an input.
0 = Associated port J pin has no pullup/pulldown device.
Address: $002D
Address: $002E
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 9-15. Port J Pullup/Pulldown Enable Register (PULEJ)
Figure 9-14. Port J Pullup/Pulldown Select Register (PUPSJ)
PUPSJ7
PULEJ7
Bit 7
Bit 7
0
0
PUPSJ6
PULEJ6
6
0
6
0
MC68HC812A4 Data Sheet, Rev. 7
PUPSJ5
PULEJ5
5
0
5
0
PUPSJ4
PULEJ4
4
0
4
0
PUPSJ3
PULEJ3
3
0
3
0
PUPSJ2
PULEJ2
2
0
2
0
PUPSJ1
PULEJ1
1
0
1
0
Key Wakeup Registers
PUPSJ0
PULEJ0
Bit 0
Bit 0
0
0
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