HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 222

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

6.8.2
Table 6.7 shows the pin states in an idle cycle.
Table 6.7
Pins
A
D
CS
CAS
AS
RD
HWR
LWR
DACK
Notes: 1. Remains low in DRAM space RAS down mode or a refresh cycle.
Rev.4.00 Sep. 07, 2007 Page 192 of 1210
REJ09B0245-0400
EXTAL
Address bus
RD
HWR
RAS
CAS, LCAS
Data bus
23
15
n
to A
to D
*
2
m
Figure 6.35 (b) Example of Idle Cycle Insertion in RAS Down Mode (ICIS0 = 1)
*
0
2. n = 0 to 7
3. m = 0 or 1
0
3
Pin States in Idle Cycle
Pin States in Idle Cycle
T
p
DRAM space read
T
r
Pin State
Contents of following bus cycle
High impedance
High *
High
High
High
High
High
High
T
c1
1
T
c2
T
I
External read
T
1
T
2
T
3
Idle cycle
T
DRAM space write
c1
T
c1
T
c2