R32C116_15 Datasheet, PDF (88/99 Pages) Renesas Technology Corp – RENESAS MCU

R32C/116 Group
5. Electrical Characteristics
V_CC = 3.3 V
Switching Characteristics (V_CC = 3.0 to 3.6 V, V_SS = 0 V, and T_a = T_opr, unless otherwise noted)
Table 5.62
Symbol
t_su(S-ALE)
t_h(R-S)
t_su(A-ALE)
t_h(ALE-A)
t_h(R-A)
t_d(ALE-R)
t_w(ALE)
t_dis(R-A)
t_w(R)
t_h(W-S)
t_h(W-A)
t_d(ALE-W)
t_w(W)
t_su(D-W)
t_h(W-D)
External Bus Timing (multiplexed bus)
Characteristic
Measurement
Condition
Value
Unit
Min.
Max.
Chip-select setup time before
ALE
(1)
ns
Chip-select hold time after read
1.5 × t_c(Base) - 15
ns
Address setup time before ALE
(1)
ns
Address hold time after ALE
Address hold time after read
ALE-read delay time
ALE pulse width
Address disable time after read
Refer to
Figure 5.6
0.5 × t_c(Base) - 5
ns
1.5 × t_c(Base) - 15
ns
0.5 × t_c(Base) - 5 0.5 × t_c(Base) + 10 ns
(1)
ns
8
ns
Read pulse width
(1)
ns
Chip-select hold time after write
Address hold time after write
ALE-write delay time
Write pulse width
1.5 × t_c(Base) - 15
ns
1.5 × t_c(Base) - 15
ns
0.5 × t_c(Base) - 5 0.5 × t_c(Base) + 10 ns
(1)
ns
Data setup time before write
(1)
ns
Data hold time after write
0.5 × t_c(Base)
ns
Note:
1. The value is calculated using the formulas below based on the base clock cycles (t_c(Base)) and
respective cycles of Tsu(A-R), Tw(R), Tsu(A-W), and Tw(W) set by registers EBC0 to EBC3. If the
calculation results in a negative value, modify the value to be set. For details on how to set values,
refer to the User’s manual.
t_su(S-ALE) = t_su(A-ALE) = (Tsu(A-R) - 0.5) × t_c(Base) -15 [ns]
t_w(ALE) = (Tsu(A-R) - 0.5) × t_c(Base) - 20 [ns]
t_w(R) = Tw(R) × t_c(Base) -10 [ns]
t_w(W) = t_su(D-W) = Tw(W) × t_c(Base) -10 [ns]
R01DS0063EJ0120 Rev.1.20
Feb 6, 2013
Page 88 of 95