MB90480/485 Series
(3) Reset Input Standards
(VCC = 2.7 V to 3.6 V, VSS = 0.0 V, TA = −40 °C to +85 °C)
Value
Pin
name
Condi-
tions
Parameter
Symbol
Unit
Remarks
Min
Max
16 tCP*1
⎯
ns
Normal operation
Oscillator oscillation time*2
Reset input time
tRSTL
RST
⎯
⎯
ms Stop mode
+ 4 tCP*1
*1 : tCP is internal operating clock cycle time. Refer to “ (1) Clock Timing”.
*2 : Oscillator oscillation time is the time to 90 % of amplitude. For a crystal oscillator this is on the order of several
milliseconds to tens of milliseconds. For a ceramic oscillator, this is several hundred microseconds to
several milliseconds. For an external clock signal the value is 0 ms.
• In stop mode
t
RSTL
RST
0.2 Vcc
0.2 Vcc
90 % of
amplitude
X0
Internal
operating
clock
Oscillator
oscillation time
4 tCP
Oscillator stabilization wait time
Instruction execution
Internal reset
• Condition for measurement of AC standards
Pin
CL : Load capacitance applied to pins during testing
CLK, ALE : CL = 30 pF
AD15 to AD00 (address data bus) , RD, WR,
A23 to A00/D15 to D00 : CL = 30 pF
CL
93
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