M16C30_02 Datasheet, PDF (154/178 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Electrical characteristics (Vcc = 5V)
Mitsubishi microcomputers
M16C / 30 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
VCC = 5V
Switching characteristics (referenced to VCC = 5V, VSS = 0V at Topr = – 20^oC to 85^oC / – 40^oC to
85^oC (Note 3), CM15 = “1” unless otherwise specified)
Table 1.23.20. Memory expansion mode and microprocessor mode (no wait)
Symbol
Parameter
Measuring condition
td(BCLK-AD) Address output delay time
th(BCLK-AD)
th(RD-AD)
Address output hold time (BCLK standard)
Address output hold time (RD standard)
th(WR-AD)
td(BCLK-CS)
Address output hold time (WR standard)
Chip select output delay time
th(BCLK-CS) Chip select output hold time (BCLK standard)
td(BCLK-ALE) ALE signal output delay time
th(BCLK-ALE)
td(BCLK-RD)
th(BCLK-RD)
ALE signal output hold time
RD signal output delay time
RD signal output hold time
Figure 1.23.1
td(BCLK-WR) WR signal output delay time
th(BCLK-WR) WR signal output hold time
td(BCLK-DB)
th(BCLK-DB)
Data output delay time (BCLK standard)
Data output hold time (BCLK standard)
td(DB-WR)
Data output delay time (WR standard)
th(WR-DB)
Data output hold time (WR standard)(Note2)
Note 1: Calculated according to the BCLK frequency as follows:
Standard
Min. Max.
25
4
0
0
25
4
25
–4
25
0
25
0
40
4
(Note1)
0
10 ⁹
td(DB – WR) =
– 40
f(BCLK) X 2
[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
DBi
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.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
R
C
P0
P1
P2
30pF
P3
P4
P5
P6
P7
P8
P9
P10
Figure 1.23.1. Port P0 to P10 measurement circuit
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