MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 216

• 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

Development Support
216
ENABLE_ FIRMWARE
WRITE_BD_WORD
WRITE_BD_BYTE
1. STATUS command is a specific case of the READ_BD_BYTE command.
2. ENABLE_FIRMWARE is a specific case of the WRITE_BD_BYTE command.
WRITE_NEXT
WRITE_WORD
READ_NEXT
READ_WORD
WRITE_BYTE
WRITE_PC
WRITE_SP
Command
READ_PC
READ_SP
WRITE_D
WRITE_X
WRITE_Y
Command
READ_D
READ_X
READ_Y
TRACE1
TAGGO
GO
Table 17-2. BDM Commands Implemented in Hardware (Continued)
(2)
Opcode (Hex)
Opcode (Hex)
62
63
64
65
66
67
42
43
44
45
46
47
08
10
18
CC
C4
C4
C0
C8
E8
Table 17-3. BDM Firmware Commands
MC68HC812A4 Data Sheet, Rev. 7
16-bit data out
16-bit address
16-bit address
16-bit address
16-bit address
16-bit address
1xxx xxxx (in)
16-bit data in
16-bit data in
16-bit data in
16-bit data in
16-bit data out
16-bit data out
16-bit data out
16-bit data out
16-bit data out
16-bit data out
16-bit data in
16-bit data in
16-bit data in
16-bit data in
16-bit data in
16-bit data in
FF01,
Data
None
None
None
Data
Read from memory with BDM out of map (may steal cycles
if external access); must be aligned access
Write to memory with BDM in map (may steal cycles if
external access); data for odd address on low byte, data for
even address on high byte
Write byte $FF01, set the ENBDM bit. This allows
execution of commands which are implemented in
firmware. Typically, read STATUS, OR in the MSB, write the
result back to STATUS.
Write to memory with BDM in map (may steal cycles if
external access); must be aligned access
Write to memory with BDM out of map (may steal cycles if
external access); data for odd address on low byte, data for
even address on high byte
Write to memory with BDM out of map (may steal cycles if
external access); must be aligned access
X = X + 2; read next word pointed to by X
Read program counter
Read D accumulator
Read X index register
Read Y index register
Read stack pointer
X = X + 2; write next word pointed to by X
Write program counter
Write D accumulator
Write X index register
Write Y index register
Write stack pointer
Go to user program
Execute one user instruction, then return to BDM
Enable tagging and go to user program
Description
Description
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