MB9A310A Datasheet, PDF (77/125 Pages) SPANSION – This document states the current technical specifications regarding

DataSheet
(7) External Bus Timing
 External bus clock output Characteristics
(Vcc = 2.7V to 5.5V, Vss = 0V, Ta = - 40°C to + 105°C)
Parameter
Symbol Pin name
Conditions
Value
Min Max
Unit
Output frequency
Minimum clock cycle
time
t_CYCLE
-
MCLKOUT
Vcc ≥ 4.5 V
-
40
Vcc < 4.5 V
-
32
Vcc ≥ 4.5 V
25
-
Vcc < 4.5 V 31.25
-
MHz
MHz
ns
ns
Note: The external bus clock output is a divided clock of HCLK. For more information about setting of clock
divider, see "CHPATER 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.
MCLKOUT
 External bus signal input/output Characteristics
(Vcc = 2.7V to 5.5V, Vss = 0V, Ta = - 40°C to + 105°C)
Parameter
Symbol Conditions
Value
Unit Remarks
V_IH
Signal input characteristics
V_IL
-
V_OH
Signal output characteristics
V_OL
0.8 × V_CC
V
0.2 × V_CC
V
0.8 × V_CC
V
0.2 × V_CC
V
Input signal
VIH
VIL
VIH
VIL
Output signal
VOH
VOH
VOL
VOL
74
MB9A310A-DS706-00012-3v0-E, December 16, 2014