mc68hc908ap8a Freescale Semiconductor, Inc, mc68hc908ap8a Datasheet - Page 123

• Manufacturer Part Number: mc68hc908ap8a
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

A sequence of IREAD or IWRITE commands can access a block of memory sequentially over the full
64-Kbyte memory map.
Freescale Semiconductor
Description
Description
Returned
Returned
Operand
Operand
Opcode
Opcode
Data
Data
Table 8-8. READSP (Read Stack Pointer) Command
Table 8-7. IWRITE (Indexed Write) Command
ECHO
Write to last address accessed + 1
Single data byte
None
$19
Reads stack pointer
None
Returns incremented stack pointer value (SP + 1) in
high-byte:low-byte order
$0C
READSP
FROM
HOST
ECHO
MC68HC908AP A-Family Data Sheet, Rev. 3
FROM
HOST
IWRITE
READSP
IWRITE
Command Sequence
Command Sequence
DATA
HIGH
DATA
SP
LOW
SP
RETURN
Functional Description
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