s908qy2ad1vdwer Freescale Semiconductor, Inc, s908qy2ad1vdwer Datasheet - Page 152

• Manufacturer Part Number: s908qy2ad1vdwer
• Description: Mc68hc908qt4a Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Development Support
A sequence of IREAD or IWRITE commands can access a block of memory sequentially over the full
64-Kbyte memory map.
152
Data Returned
Data Returned
Data Returned
FROM HOST
ECHO
WRITE
Description
Description
Description
Operand
Operand
Operand
Opcode
Opcode
Opcode
WRITE
Table 15-6. IWRITE (Indexed Write) Command
Table 15-4. WRITE (Write Memory) Command
Table 15-5. IREAD (Indexed Read) Command
None
$49
Read next 2 bytes in memory from last address accessed
None
$1A
Write to last address accessed + 1
Single data byte
None
$19
Write byte to memory
2-byte address in high-byte:low-byte order; low byte followed by data byte
Returns contents of next two addresses
ECHO
FROM HOST
MC68HC908QYA/QTA Family Data Sheet, Rev. 2
FROM HOST
ADDRESS
IREAD
ECHO
IWRITE
HIGH
ADDRESS
IREAD
IWRITE
HIGH
Command Sequence
Command Sequence
Command Sequence
ADDRESS
LOW
DATA
ADDRESS
LOW
DATA
DATA
DATA
DATA
RETURN
DATA
Freescale Semiconductor