mc68hc908gr8a Freescale Semiconductor, Inc, mc68hc908gr8a Datasheet - Page 228
mc68hc908gr8a
Manufacturer Part Number
mc68hc908gr8a
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GR8A.pdf
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A sequence of IREAD or IWRITE commands can access a block of memory sequentially over the full
64-Kbyte memory map.
228
Data Returned
Data Returned
Data Returned
Description
Description
Description
ECHO
FROM HOST
WRITE
Operand
Operand
Operand
Opcode
Opcode
Opcode
WRITE
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
Table 18-6. IWRITE (Indexed Write) Command
Table 18-4. WRITE (Write Memory) Command
Write byte to memory
2-byte address in high-byte:low-byte order; low byte followed by data byte
None
$49
Read next 2 bytes in memory from last address accessed
None
Returns contents of next two addresses
$1A
Write to last address accessed + 1
Single data byte
None
$19
Table 18-5. IREAD (Indexed Read) Command
ECHO
FROM HOST
FROM HOST
ADDRESS
ECHO
IREAD
IWRITE
HIGH
ADDRESS
IREAD
IWRITE
HIGH
Command Sequence
Command Sequence
Command Sequence
ADDRESS
LOW
DATA
ADDRESS
LOW
DATA
DATA
DATA
DATA
RETURN
DATA
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