DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 206

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

Table 6.4 shows pin states in an idle cycle.
Table 6.4
Rev.7.00 Dec. 24, 2008 Page 152 of 698
REJ09B0074-0700
Pins
A23 to A0
D15 to D0
CSn
AS
RD
HWR
LWR
Address bus
CS (area A)
CS (area B)
Pin States in Idle Cycle
Figure 6.24 Relationship between Chip Select (CS) and Read (RD)
RD
φ
Possibility of overlap between
CS (area B) and RD
T
(a) Idle cycle not inserted
1
Bus cycle A
(ICIS1 = 0)
T
2
T
3
Bus cycle B
T
1
T
2
Address bus
CS (area A)
CS (area B)
Pin State
Contents of next bus cycle
High impedance
High
High
High
High
High
RD
φ
T
1
Bus cycle A
(b) Idle cycle inserted
(Initial value ICIS1 = 1)
T
2
T
3
T
Bus cycle B
I
T
1
T
2