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EM78P468N/EM78P468L
8-Bit Microcontroller
Product Specification (V1.5) 02.15.2007
• 53
(This specification is subject to change without further notice)
8.2 AC Electrical Characteristics
Ta=- 40°C ~ 85 °C, VDD=5V±5%, GND=0V
Symbol Parameter Conditions Min Typ Max Unit
Dclk Input CLK duty cycle − 45 50 55 %
Crystal type 100 − DC ns
Tins
Instruction cycle time
(CLKS="0")
RC type 500 − DC ns
Ttcc TCC input period − (Tins+20)/N* − − ns
Tdrh Device reset hold time Ta = 25°C 11.3 16.2 21.6 ms
Trst /RESET pulse width Ta = 25°C 2000 − − ns
Twdt Watchdog timer period Ta = 25°C 11.3 16.2 21.6 ms
Tset Input pin setup time − − 0 − ns
Thold Input pin hold time − − 20 − ns
Tdelay Output pin delay time Cload=20pF − 50 − ns
* N= selected prescaler ratio