MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 128

• 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

Standard Timer Module
TSWAI — Timer Stop in Wait Mode Bit
TSBCK — Timer Stop in Background Mode Bit
TFFCA — Timer Fast Flag Clear-All Bit
128
TSWAI disables the timer and PA in wait mode.
TSBCK stops the timer during background mode.
When TFFCA is set:
When TFFCA is clear, writing logic 1s to the flags clears them.
1 = Timer and PA disabled in wait mode
0 = Timer and PA enabled in wait mode
1 = Timer disabled in background mode
0 = Timer enabled in background mode
1 = Fast flag clearing
0 = Normal flag clearing
–
–
–
An input capture read or a write to an output compare channel clears the corresponding
channel flag, CnF.
Any access of the timer counter registers, TCNTH/L, clears the TOF flag.
Any access of the PA counter registers, PACNTH/L, clears both the PAOVF and PAIF flags in
the PAFLG register.
If timer and PA interrupt requests are needed to bring the MCU out of wait
mode, clear TSWAI before executing the WAIT instruction.
Setting TSBCK does not stop the PA when it is in event counter mode.
WRITE TCx REGISTERS
READ TCx REGISTERS
Figure 12-11. Fast Clear Flag Logic
TFFCA
CnF
MC68HC812A4 Data Sheet, Rev. 7
WRITE TFLG1 REGISTER
NOTE
NOTE
DATA BIT n
CLEAR
CnF FLAG
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