H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 184

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 6 Bus Controller
6.4.3
Table 6.4 shows the data buses used and valid strobes for the access spaces.
In a read, the RD signal is valid without discrimination between the upper and lower halves of the
data bus.
In a write, the HWR signal is valid for the upper half of the data bus, and the LWR signal for the
lower half.
Table 6.4
Notes: Hi-Z: High impedance
Rev. 3.00 Sep 15, 2006 page 150 of 988
REJ09B0330-0300
Area
8-bit access
space
16-bit access
space
Invalid: Input state; input value is ignored.
Valid Strobes
Data Buses Used and Valid Strobes
Access
Size
Byte
Byte
Word
Read/
Write
Read
Write
Read
Write
Read
Write
Address
—
—
Even
Odd
Even
Odd
—
—
Valid
Strobe
RD
HWR
RD
HWR
LWR
RD
HWR, LWR Valid
Upper Data Bus
(D
Valid
Valid
Invalid
Valid
Hi-Z
Valid
15
to D
8
)
Lower data bus
(D
Invalid
Hi-Z
Invalid
Valid
Hi-Z
Valid
Valid
Valid
7
to D
0
)