MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 287

• Manufacturer Part Number: MM912H634DM1AER2
• Description: 16-bit Microcontrollers - MCU 64KS12 LIN2XLS/HS ISENSE
• Manufacturer: Freescale Semiconductor

Specifications of MM912H634DM1AER2

• Rohs: yes
• Core: HCS12
• Processor Series: MM912F634
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 2 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 5.5 V to 18 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-48
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 15
• Interface Type: SPI
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 15
• Number Of Timers: 1
• Program Memory Type: Flash
• Supply Voltage - Max: 18 V
• Supply Voltage - Min: 5.5 V

Functional Description and Application Information
4.36.4.2.2
The program operation will program a previously erased address in the Flash memory using an embedded algorithm.
An example flow to execute the program operation is shown in
is as follows:
Freescale Semiconductor
1.
2.
3.
Write to an aligned Flash block address to start the command write sequence for the program command. The data
written will be programmed to the address written.
Write the program command, 0x20, to the FCMD register.
Clear the CBEIF flag in the FSTAT register by writing a 1 to CBEIF to launch the program command.
Program Command
Erase Verify
Status
Clock Register
Written
Check
Bit Polling for
Command Completion
Check
Access Error and
Protection Violation
Check
Command
Buffer Empty Check
Read: FCLKDIV register
2.
3.
1.
Figure 86. Example Erase Verify Command Flow
yes
FDIVLD
Write: FCMD register
Erase Verify Command 0x05
Write: FSTAT register
Clear CBEIF 0x80
START
Write: Flash Block Address
and Dummy Data
Set?
Read: FSTAT register
Read: FSTAT register
ACCERR/PVIOL
yes
BLANK
yes
CBEIF
yes
no
CCIF
Set?
Set?
Set?
EXIT
Write: FCLKDIV register
Set?
no
Flash Block
Erased
no
yes
no
no
Figure
Write: FSTAT register
Clear ACCERR/PVIOL 0x30
NOTE: FCLKDIV needs to
be set after each reset
87. The program command write sequence
32 kbyte Flash Module (S12SFTSR32KV1)
EXIT
Flash Block
Not Erased
MM912F634
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