M16C30L Datasheet, PDF (155/166 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Electrical characteristics
Mitsubishi microcomputers
M16C / 30L Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Switching characteristics (referenced to VCC = 3.3V, VSS = 0V at Topr = – 20^oC to 85^oC / – 40^oC to
85^oC (Note 3), CM15 = “1” unless otherwise specified)
Table 1.26.22. Memory expansion and microprocessor modes
(when accessing external memory area with wait)
Symbol
td(BCLK-AD)
th(BCLK-AD)
Parameter
Address output delay time
Address output hold time (BCLK standard)
Measuring condition
Standard
Min. Max.
50
4
th(RD-AD)
Address output hold time (RD standard)
0
th(WR-AD)
Address output hold time (WR standard)
0
td(BCLK-CS)
th(BCLK-CS)
Chip select output delay time
Chip select output hold time (BCLK standard)
50
4
td(BCLK-ALE)
th(BCLK-ALE)
td(BCLK-RD)
ALE signal output delay time
ALE signal output hold time
RD signal output delay time
40
–4
Figure 1.26.1
40
th(BCLK-RD)
td(BCLK-WR)
RD signal output hold time
WR signal output delay time
0
40
th(BCLK-WR)
td(BCLK-DB)
WR signal output hold time
Data output delay time (BCLK standard)
0
50
th(BCLK-DB)
td(DB-WR)
th(WR-DB)
Data output hold time (BCLK standard)
Data output delay time (WR standard)
Data output hold time (WR standard)(Note2)
4
(Note1)
0
Note 1: Calculated according to the BCLK frequency as follows:
td(DB – WR) =
10 ⁹
f(BCLK) ^{– 50 [ns]}
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note 2: This is standard value shows the timing when the output is off,
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
t = –CR X ln (1 – VOL / VCC)
by a circuit of the right figure.
For example, when VOL = 0.2VCC, C = 30pF, R = 1kΩ, hold time
of output “L” level is
t = – 30pF X 1kΩ X ln (1 – 0.2VCC / VCC)
= 6.7ns.
Note 3: Specify a product of -40°C to 85°C to use it.
R
DBi
C
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