M30622M4 MITSUBISHI [Mitsubishi Electric Semiconductor], M30622M4 Datasheet - Page 203

• Manufacturer Part Number: M30622M4
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Timing (Vcc = 3V)
Switching characteristics (referenced to V
otherwise specified)
Table 1.26.39. Memory expansion and microprocessor modes
Note 1: Calculated according to the BCLK frequency as follows:
Note 2: This is standard value shows the timing when the output is off,
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
h(RD-AD)
d(BCLK-ALE)
h(BCLK-ALE)
d(BCLK-AD)
h(BCLK-AD)
h(WR-AD)
d(BCLK-CS)
h(BCLK-CS)
d(BCLK-RD)
h(BCLK-RD)
d(BCLK-WR)
h(BCLK-WR)
d(BCLK-DB)
h(BCLK-DB)
d(DB-WR)
h(WR-DB)
Symbol
and doesn't show hold time of data bus.
Hold time of data bus is different by capacitor volume and pull-up
(pull-down) resistance value.
Hold time of data bus is expressed in
by a circuit of the right figure.
For example, when V
of output “L” level is
td(DB – WR) =
Address output hold time (RD standard)
Address output hold time (WR standard)
RD signal output delay time
WR signal output delay time
Address output hold time (BCLK standard)
ALE signal output delay time
RD signal output hold time
WR signal output hold time
Data output delay time (BCLK standard)
Data output hold time (BCLK standard)
Data output hold time (WR standard)(Note2)
Address output delay time
Chip select output delay time
Chip select output hold time (BCLK standard)
ALE signal output hold time
Data output delay time (WR standard)
(when accessing external memory area with wait)
t = –CR X ln (1 – V
t = – 30pF X 1k X ln (1 – 0.2V
= 6.7ns.
f(BCLK)
Parameter
10
OL
9
= 0.2V
OL
– 80
/ V
CC
CC
, C = 30pF, R = 1k , hold time
)
CC
[ns]
CC
= 3V, V
/ V
CC
)
SS
Measuring condition
Figure 1.26.1
= 0V at Ta = 25
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(Note1)
o
Min.
– 4
C, CM15 = “1” unless
Standard
4
0
0
4
0
0
4
0
Max.
DBi
60
60
60
60
60
80
Mitsubishi microcomputers
M16C / 62 Group
V
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CC
R
C
= 3V
203