MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 218

• 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
17.4.1.2 Firmware Command
The bits in the BDM instruction register have the following meanings when a firmware command is
executed.
H/F — Hardware/Firmware Flag
DATA — Data Flag
R/W — Read/Write Flag
TTAGO — Trace, Tag, and Go Field
REGN — Register/Next Field
218
Indicates which register is being affected by a command. In the case of a READ_NEXT or
WRITE_NEXT command, index register X is pre-incremented by 2 and the word pointed to by X is then
read or written.
1 = Hardware control logic
0 = Firmware control logic
1 = Data included in command
0 = No data
1 = Read
0 = Write
Address: $FF00
Reset:
Read:
Write:
Bit 7
Figure 17-5. BDM Instruction Register (INSTRUCTION)
H/F
0
REGN Value
TTAGO Value
DATA
6
0
000
001
010
011
100
101
110
111
00
01
10
11
Table 17-4. TTAGO Decoding
Table 17-5. REGN Decoding
MC68HC812A4 Data Sheet, Rev. 7
R/W
5
0
4
0
TTAGO
READ/WRITE NEXT
Instruction
3
0
Instruction
PC
SP
—
—
TRACE1
D
X
Y
TAGGO
GO
—
2
0
REGN
1
0
Freescale Semiconductor
Bit 0
0