M30620FCAFP datasheet(201/615 Pages) RENESAS

201 / 615 page

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Timing (Vcc = 5V)

1-182

Switching characteristics (referenced to VCC = 5V, VSS = 0V at Topr = – 20oC to 85oC / – 40oC to

85oC (Note 3), CM15 = “1” unless otherwise specified)

VCC = 5V

Figure 1.23.1

Table 1.23.21. Memory expansion mode and microprocessor mode

(with wait, accessing external memory)

Symbol

Standard

Measuring condition

Max.

Min.

Parameter

Unit

td(BCLK-AD)

Address output delay time

th(BCLK-AD)

Address output hold time (BCLK standard)

th(BCLK-CS)

Chip select output hold time (BCLK standard)

td(BCLK-ALE)

ALE signal output delay time

th(BCLK-ALE)

ALE signal output hold time

– 4

td(BCLK-RD)

RD signal output delay time

th(BCLK-RD)

RD signal output hold time

td(BCLK-WR)

WR signal output delay time

th(BCLK-WR)

WR signal output hold time

td(BCLK-DB)

Data output delay time (BCLK standard)

th(BCLK-DB)

Data output hold time (BCLK standard)

th(WR-DB)

Data output hold time (WR standard)(Note2)

td(DB-WR)

Data output delay time (WR standard)

(Note1)

Note 1: Calculated according to the BCLK frequency as follows:

td(DB – WR) =

f(BCLK)

10 9

– 40

[ns]

td(BCLK-CS)

Chip select output delay time

th(RD-AD)

Address output hold time (RD standard)

th(WR-AD)

Address output hold time (WR standard)

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 = 1k

Ω, hold time

of output “L” level is

t = – 30pF X 1k

Ω X ln (1 – 0.2VCC / VCC)

= 6.7ns.

DBi

Note 3: Specify a product of -40°C to 85°C to use it.

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