M30620FCAFP datasheet(550/615 Pages) RENESAS

550 / 615 page

External Buses

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-233

(b) Vcc = 3V

• With the Wait option cleared

ta(S) < 109/f(BCLK) – 140(ns)*

• With the Wait option selected

ta(S) < 2 X109/f(BCLK) – 140(ns)*

* 140(ns) = td(BCLK – CS) + tsu(DB – RD) – th(BCLK – RD)

= (chip select output delay time) + (data input setup time) – (RD signal output hold time)

(4) Output enable time [ta(OE)]

Output enable time [ta(OE)] must satisfy the following conditional expressions:

(a) Vcc = 5V

• With the Wait option cleared

ta(OE) < 109/(f(BCLK) X 2) – 45(ns) = tac1(RD-DB)

• With the Wait option selected

ta(OE) < 3 X 109/(f(BCLK) X 2) – 45(ns) = tac2(RD-DB)

(b) Vcc = 3V

• With the Wait option cleared

ta(OE) < 109/(f(BCLK) X 2) – 90(ns) = tac1(RD-DB)

• With the Wait option selected

ta(OE) < 3X109/(f(BCLK) X 2) – 90(ns) = tac2(RD-DB)

(5) Data setup time [tsu(D)]

Data setup time [tsu(D)] must satisfy the following conditional expressions:

(a) Vcc = 5V

• With the Wait option cleared

tsu(D) < 109/(f(BCLK) X 2) – 40(ns)*

• With the Wait option selected

tsu(D) < 109/f(BCLK) – 40(ns)*

* 40(ns)

= td(BCLK – DB) – th(BCLK – WR)

= (data output delay time) – (WR signal output hold time)

(b) Vcc = 3V

• With the Wait option cleared

tsu(D) < 109/(f(BCLK) X 2) – 80(ns)*

• With the Wait option selected

tsu(D) < 109/f(BCLK) – 80(ns)*

* 80(ns)

= td(BCLK – DB) – th(BCLK – WR)

= (data output delay time) – (WR signal output hold time)

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