SH7708 Datasheet, PDF (246/633 Pages) Renesas Technology Corp – SuperH™ RISC engine

Table 10.11 8-Bit External Device/Little Endian Access and Data Alignment
Data Bus
Operation
D31– D23– D15–
D24 D16 D8 D7–D0
Address 0 byte
access
— — — Data 7–0
Address 1 byte
access
— — — Data 7–0
Address 2 byte
access
— — — Data 7–0
Address 3 byte
access
— — — Data 7–0
Address 0 1st time — — — Data 7–0
word
(address
access 0)
2nd time — — — Data
(address
15–8
1)
Address 2 1st time — — — Data 7–0
word
(address
access 2)
2nd time — — — Data
(address
15–8
3)
Address 0 1st time — — — Data 7–0
longword (address
access 0)
2nd time — — — Data
(address
15–8
1)
3rd time — — — Data
(address
23–16
2)
4th time — — — Data
(address
31–24
3)
Strobe Signal
WE3, WE2, WE1, WE0,
CASHH, CASHL, CASLH, CASLL,
DQMUU DQMUL DQMLU DQMLL
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
—
—
—
Asserted
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