MC68HC05L28B MOTOROLA [Motorola, Inc], MC68HC05L28B Datasheet - Page 37

• Manufacturer Part Number: MC68HC05L28B
• Description: Flexible general-purpose microcomputer
• Manufacturer: MOTOROLA [Motorola, Inc]

The MC68HC05L28 has a 16K byte memory map consisting of registers, user ROM, user RAM,
bootstrap ROM, LCD RAM, EEPROM and I/O, as shown in Figure 3-1.
3.1
All the I/O, control and status registers of the MC68HC05L28 are contained within the first 64-byte
block of the memory map (address $0000 to $003F).
3.2
The 12 bytes of LCD RAM are located at address $0040 to $004B. This RAM is used to store the
data needed for the LCD. See Section 7.1 for further details of the organization of these bits.
3.3
The user RAM consists of 256 bytes of memory, from $0080 to $017F. This is shared with a 64
byte stack area. The stack begins at $00FF and counts down to $00C0.
Note:
MC68HC05L28
Using the stack area for data storage or temporary work locations requires care to
prevent the data from being overwritten due to stacking from an interrupt or subroutine
call.
Registers
LCD RAM
RAM
MEMORY AND REGISTERS
MEMORY AND REGISTERS
3
MOTOROLA
TPG
3-1
3