Table 18.10 List Of Lpc/Fw Memory Access Commands - Renesas H8S Series Hardware Manual

Table 18.10 lists the LPC/FW memory access commands.

Table 18.10 List of LPC/FW Memory Access Commands

Command
Data read
ID read
Status read
Clear status
Erasing enable
Block erasure
Write enable
Data write (on-chip RAM)
WRITEE clear
FLWAR set
Data write (flash memory)
Flash memory programming W
BUFTRAN clear
Buffer initialization
User command
[Legend]
O: Available
FL: Flash memory address
RM: On-chip RAM address
CMDx: Command address
: Any data
Note: The HDINIE and BUFINIIE bits select whether or not memory is accessed and whether
*
or not an interrupt is generated with the buffer initialization command.
1. Data read command
When receiving an FL/RM address in an LPC/FW memory read cycle, the LPC sends back
data of the address in the memory. Byte, word, and longword transfers are supported in FW
memory read cycles.
Operation Address
R FL/RM
R CMD0
CMD1
R CMD2
CMD3
W CMD4
W CMD5
W CMD6
W CMD7
W RM
W CMD8
W FL
W FL
CMD9
W CMDA
W CMDB
W CMDC
Section 18 LPC Interface (LPC)
Size Data
B/W/L Read data
B/W MID
DID
B/W ST1
ST2

B

B
B Block number

B
B/W/L Write data

B
'
B H 80
B/W/L Write data

B

B

B

B
X: Not available
MID/DID: ID codes (LMCMIDCR/LMCDIDCR)
ST1/2: LMCST (LMCST1/LMCST2)
Block number: Erase block number
Rev. 3.00 Jul. 14, 2005 Page 693 of 986
Wait Memory
State Access Interrupt
O O X
X X X
X X X
X X X
X X X
X X O
X X X
X O X
X X X
X X X
X O X
X X O
X X X
X X/O* O/X*
X X O
REJ09B0098-0300