EM78P156N

OTP ROM

6.2 AC Electrical Characteristic

 

 

 

 

 

 

(Ta=25 °C, VDD=5V±5%, VSS=0V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

 

Dclk

Input CLK duty cycle

 

45

50

55

%

 

Tins

Instruction cycle time

Crystal type

100

 

DC

ns

 

(CLKS="0")

RC type

500

 

DC

ns

 

 

 

 

Ttcc

TCC input period

 

(Tins+20)/N*

 

 

ns

 

Tdrh

Device reset hold time

 

11.8

16.8

21.8

ms

 

Trst

/RESET pulse width

Ta = 25°C

2000

 

 

ns

 

Twdt

Watchdog timer period

Ta = 25°C

11.8

16.8

21.8

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.

*These parameters are characterizes but not tested.

This specification is subject to change without prior notice. 39

07.29.2004 (V1.2)