MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 85

• 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

The external E-clock may be the stretched E-clock, the E-clock, or no clock depending on the selection
of control bits ESTR and IVIS in the MODE register and NECLK in the PEAR register.
8.4 Memory Expansion Registers
This section describes the memory expansion registers.
8.4.1 Port F Data Register
Read: Anytime
Write: Anytime
Seven port F pins are associated with chip-selects. Any pin not used as a chip-select can be used as
general-purpose I/O. All pins are pulled up when inputs (if pullups are enabled). Enabling a chip-select
overrides the associated data direction bit and port data bit.
8.4.2 Port G Data Register
Read: Anytime
Write: Anytime
Six port G pins are associated with memory expansion. Any pin not used for memory expansion can be
used as general-purpose I/O. All pins are pulled up when inputs (if pullups are enabled). Enabling a
memory expansion address with the memory expansion assignment register overrides the associated
data direction bit and port data bit.
Freescale Semiconductor
Alternate pin function:
Alternate pin function:
Address: $0031
Address: $0030
Reset:
Read:
Write:
Reset:
Read:
Write:
Bit 7
Bit 7
0
0
0
0
Figure 8-8. Port G Data Register (PORTG)
Figure 8-7. Port F Data Register (PORTF)
= Unimplemented
= Unimplemented
CSP1
PF6
6
0
0
MC68HC812A4 Data Sheet, Rev. 7
6
0
ADDR21
CSP0
Bit 5
PF5
5
0
5
0
ADDR20
Bit 4
CSD
PF4
4
0
4
0
ADDR19
Bit 3
CS3
PF3
3
0
3
0
ADDR18
CS2
Bit 2
PF2
2
0
2
0
Memory Expansion Registers
ADDR17
PF1
CS1
Bit 1
1
0
1
0
ADDR16
Bit 0
PF0
CS0
Bit 0
Bit 0
0
0
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