mc9s08jm60 Freescale Semiconductor, Inc, mc9s08jm60 Datasheet - Page 44

• Manufacturer Part Number: mc9s08jm60
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 4 Memory
Direct-page registers can be accessed with efficient direct addressing mode instructions. Bit manipulation
instructions can be used to access any bit in any direct-page register.
user-accessible direct-page registers and control bits.
The direct page registers in
requires the lower byte of the address. Because of this, the lower byte of the address in column one is
shown in bold text. In
Table
from the bit names to the right. Cells that are not associated with named bits are shaded. A shaded cell with
a 0 indicates this unused bit always reads as a 0. Shaded cells with dashes indicate unused or reserved bit
locations that could read as 1s or 0s.
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4-2,
— An 8-byte backdoor comparison key which optionally allows a user to gain controlled access
Table
to secure memory
Because the nonvolatile register locations are flash memory, they must be erased and
programmed like other flash memory locations.
4-3, and
Table 4-3
Table
Table 4-2
4-4, the register names in column two are shown in bold to set them apart
and
MC9S08JM60 Series Data Sheet, Rev. 2
Table
can use the more efficient direct addressing mode which only
4-4, the whole address in column one is shown in bold. In
Table 4-2
is a summary of all
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