MB9B210T datasheet(89/137 Pages) SPANSION

89 / 137 page

D a t a S h e e t

MB9B210T-DS706-00015-3v0-E, February 10, 2015

CONFIDENTIAL

(7) External Bus Timing

 External bus clock output characteristics

(Vcc = 2.7V to 5.5V, Vss = 0V, Ta = - 40°C to + 85°C)

Parameter

Symbol

Pin name

Conditions

Value

Unit

Min

Max

Output frequency

tCYCLE

MCLKOUT*

Vcc ≥ 4.5 V

50*

MHz

Vcc < 4.5 V

32*

MHz

*1: External bus clock (MCLKOUT) is divided clock of HCLK.

For more information about setting of clock divider, see "CHAPTER 12: External Bus Interface" in

"FM3 Family PERIPHERAL MANUAL".

When external bus clock is not output, this characteristic does not give any effect on external bus operation.

*2: When AHB bus clock frequency is more than 100 MHz, the divider setting for MCLKOUT must be more

than 4.

*3: When AHB bus clock frequency is more than 64 MHz, the divider setting for MCLKOUT must be more

than 4.

 External bus signal input/output characteristics

(Vcc = 2.7V to 5.5V, Vss = 0V, Ta = - 40°C to + 85°C)

Parameter

Symbol

Conditions

Value

Unit

Remarks

Signal input characteristics

VIH

0.8 × VCC

VIL

0.2 × VCC

Signal output characteristics

VOH

0.8 × VCC

VOL

0.2 × VCC

VIH

VIL

VIH

VOH

VOL

VOH

Input signal

Output signal

MCLKOUT

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