MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 59

• 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

EMD — Emulate Port D Bit
EME — Emulate Port E Bit
5.4.2 Register Initialization Register
After reset, the 512-byte register block resides at location $0000 but can be reassigned to any 2-Kbyte
boundary within the standard 64-Kbyte address space. Mapping of internal registers is controlled by five
bits in the INITRG register. The register block occupies the first 512 bytes of the 2-Kbyte block.
Read: Anytime
Write: Once in normal modes; anytime in special modes
REG15–REG11 — Register Position Bits
Freescale Semiconductor
Normal modes: Write once
Special modes: Write anytime except the first time
This bit only has meaning in special expanded narrow mode.
In expanded wide modes and special peripheral mode, PORTD, DDRD, KWIED, and KWIFD are
removed from the memory map regardless of the state of this bit.
In single-chip modes and normal expanded narrow mode, PORTD, DDRD, KWIED, and KWIFD are in
the memory map regardless of the state of this bit.
Normal modes: Write once
Special modes: Write anytime except the first time
In single-chip mode, PORTE and DDRE are always in the map regardless of the state of this bit.
Normal modes: Write once
Special modes: Write anytime except the first time
These bits specify the upper five bits of the 16-bit register address.
1 = If in special expanded narrow mode, PORTD, DDRD, KWIED, and KWIFD are removed from
0 = PORTD, DDRD, KWIED, and KWIFD are in the memory map.
1 = If in an expanded mode, PORTE and DDRE are removed from the internal memory map.
0 = PORTE and DDRE in the memory map
the memory map. Removing the registers from the map allows the user to emulate the function
of these registers externally.
Removing the registers from the map allows the user to emulate the function of these registers
externally.
Address: $0011
Reset:
Read:
Write:
REG15
Bit 7
0
Figure 5-2. Register Initialization Register (INITRG)
REG14
6
0
MC68HC812A4 Data Sheet, Rev. 7
REG13
5
0
REG12
4
0
REG11
3
0
2
0
0
Mode and Resource Mapping Registers
1
0
0
Bit 0
0
0
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