MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 271

• 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
4.36.3
This section describes the Flash array map, Flash IFR map, and Flash register map shown in
4.36.3.1
The MCU memory map places the Flash array addresses between Flash array base + 0x0000 and 0x7FFF.
4.36.3.1.1
During the reset sequence, the contents of the 16 byte Flash configuration field are read to set Flash memory protection and
Flash security features. The Flash configuration field starts at Flash array base + 0x7F00, as shown in
Freescale Semiconductor
Table 348. Flash Configuration Field
Address Relative to Flash
0x7F08 - 0x7F0C
0x7F00 - 0x7F07
Array Base
0x7F0D
Memory Map and Register Definition
Flash Array Map
Flash Configuration Field Description
FLASH REGISTER BASE + 0x000F
FLASH REGISTER BASE + 0x0000
FLASH ARRAY BASE + 0x7FFF
FLASH ARRAY BASE + 0x0000
FLASH IFR BASE + 0x007F
FLASH IFR BASE + 0x0000
(bytes)
Size
8
5
1
Backdoor Key
Refer to
Reserved
Flash Protection byte
Refer to
Figure 84. Flash Memory Map
Section 4.36.6.1, “Unsecuring the MCU Using Backdoor Key
Section 4.36.3.3.5, “Flash Protection Register
Flash Registers
16 bytes
Flash IFR
128 bytes
Flash Array
32 kbytes
Flash Configuration Field
16 bytes (+0x7F00 to +0x7F0F)
Description
32 kbyte Flash Module (S12SFTSR32KV1)
(FPROT)"”
Figure
84.
Table
Access"”
348.
MM912F634
271