mc68hc11k4 Freescale Semiconductor, Inc, mc68hc11k4 Datasheet - Page 84

• Manufacturer Part Number: mc68hc11k4
• Description: Mc68hc11k1 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Operating Modes and On-Chip Memory
4.6.1 Control Registers and RAM
Technical Data
84
NOTE:
Address: $003D
Out of reset, the 128-byte register block is mapped to $0000 and the
768-byte RAM (1 Kbyte on the [7]11KS2) is mapped to $0080. Both the
register block and the RAM can be placed at any other 4-Kbyte boundary
($x000 and $x080, respectively) by writing the appropriate value to the
INIT register.
INIT is writable once in normal modes and writable at any time in special
modes.
RAM[3:0] — RAM Map Position Bits
REG[3:0] — Register Block Position Bits
Reset:
Read:
Write:
These four bits determine the position of RAM in the memory map by
specifying the upper hexadecimal digit of the RAM address. Refer to
Table
These four bits determine the position of the register block in memory
by specifying the upper hexadecimal digit of the block address. Refer
to
Freescale Semiconductor, Inc.
For More Information On This Product,
Table
Operating Modes and On-Chip Memory
RAM3
Bit 7
Figure 4-5. RAM and I/O Mapping Register (INIT)
4-5.
0
4-6.
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RAM2
6
0
RAM1
5
0
RAM0
4
0
REG3
3
0
REG2
2
0
M68HC11K Family
REG1
1
0
MOTOROLA
REG0
Bit 0
0