M16C64A_15 Datasheet, PDF (66/92 Pages) Renesas Technology Corp – RENESAS MCU

M16C/64A Group
5. Electrical Characteristics
V_CC1 = V_CC2 = 5 V
Switching Characteristics
(V_CC1 = V_CC2 = 5 V, V_SS = 0 V, at T_opr = -20°C to 85°C/-40°C to 85°C unless otherwise specified)
5.2.4.2 In 1 to 3 Waits Setting and When Accessing External Area
Table 5.36 Memory Expansion Mode and Microprocessor Mode (in 1 to 3 Waits Setting and When
Accessing External Area)
Symbol
Parameter
Measuring
Condition
Standard
Min.
Max.
Unit
t_d(BCLK-AD)
t_h(BCLK-AD)
t_h(RD-AD)
t_h(WR-AD)
t_d(BCLK-CS)
t_h(BCLK-CS)
t_d(BCLK-ALE)
t_h(BCLK-ALE)
t_d(BCLK-RD)
t_h(BCLK-RD)
t_d(BCLK-WR)
t_h(BCLK-WR)
t_d(BCLK-DB)
t_h(BCLK-DB)
t_d(DB-WR)
t_h(WR-DB)
Address output delay time
Address output hold time (in relation to BCLK)
Address output hold time (in relation to RD)
Address output hold time (in relation to WR)
Chip select output delay time
Chip select output hold time (in relation to BCLK)
ALE signal output delay time
ALE signal output hold time
RD signal output delay time
RD signal output hold time
WR signal output delay time
WR signal output hold time
Data output delay time (in relation to BCLK)
Data output hold time (in relation to BCLK) ⁽³⁾
Data output delay time (in relation to WR)
Data output hold time (in relation to WR)⁽³⁾
25
ns
0
ns
0
ns
(Note 2)
ns
25
ns
0
ns
15
ns
See
-4
ns
Figure 5.14
25
ns
0
ns
25
ns
0
ns
40
ns
0
ns
(Note 1)
ns
(Note 2)
ns
Notes:
1. Calculated according to the BCLK frequency as follows:
(_---n_{----–-----0---.-5----})_---×_{-----1---0---}⁹_{- – 40[ns]}
f_(BCLK)
n is 1 for 1 wait setting, 2 for 2 waits setting and 3 for 3 waits setting.
When n = 1, f_(BCLK) is 12.5 MHz or less.
2. Calculated according to the BCLK frequency as follows:
0----.-5----×_{-----1---0----}⁹ _{– 10[ns]}
f_(BCLK)
3. This standard value shows the timing when the output is off,
and does not show hold time of data bus.
Hold time of data bus varies with capacitor volume and pull-up
(pull-down) resistance value.
Hold time of data bus is expressed in
t = −CR × ln(1 − V_OL/V_CC2)
by a circuit of the right figure.
For example, when V_OL = 0.2V_CC2, C = 30 pF, R = 1 kΩ, hold
time of output low level is
t = −30 pF × 1 kΩ × In(1 − 0.2V_CC2/V_CC2)
= 6.7 ns.
R
DBi
C
R01DS0032EJ0200 Rev.2.00
Feb 07, 2011
Page 66 of 88