em78f644nso28s ELAN Microelectronics Corp, em78f644nso28s Datasheet - Page 187

• Manufacturer Part Number: em78f644nso28s
• Description: Flash Series 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

10 AC Electrical Characteristics
Product Specification (V1.0) 05.05.2010
(This specification is subject to change without further notice)
10.1 EM78F648/548N
*
10.2 EM78F644/642/641/544/542/541N
*
Symbol
Symbol
Dclk
Tins
Ttcc
Tdrh
Trst
Twdt
Tset
Thold
Tdelay
Dclk
Tins
Ttcc
Tdrh
Trst
Twdt
Tset
Thold
Tdelay
N: Selected prescaler ratio
N: Selected prescaler ratio
-40 ≤ Ta ≤ 85 ° C, VDD=5V, VSS=0V
--40 ≤ Ta ≤ 85 ° C, VDD=5V, VSS=0V
The parameters shown below are theoretical values only and have not been tested
or verified.
Data under “Min”, “Typ”, & ”Max” columns are based on theoretical results at 25
These data are for design guidance only and have not been tested or verified.
Input CLK duty cycle
Instruction cycle time
(CLKS1:0="01")
TCC input period
Device reset hold time
/RESET pulse width
Watchdog timer period
Input pin setup time
Input pin hold time
Output pin delay time
Input CLK duty cycle
Instruction cycle time
(CLKS1:0="01")
TCC input period
Device reset hold time
/RESET pulse width
Watchdog timer period
Input pin setup time
Input pin hold time
Output pin delay time
Parameter
Parameter
EM78F648/644/642/641/548/544/542/541N
Cload = 20 pF
Ta = 25
Crystal type
RC type
Ta = 25
Cload = 20 pF
Conditions
Crystal type
Conditions
Ta = 25
Ta = 25
RC type
−
−
−
−
−
−
−
−
−
−
NOTE
°
°
C
C
°
°
C
C
(Tins+20)/N
(Tins+20)/N
11.8
11.8
2000
Min
100
500
100
Min
100
500
45
45
14
14
−
−
−
−
−
−
*
*
16.8
16.8
Typ
8-Bit Microcontroller
Typ
50
20
50
50
16
16
20
50
−
−
−
−
0
−
−
−
−
0
Max
21.8
21.8
DC
DC
Max
55
DC
DC
55
18
18
−
−
−
−
−
−
−
−
−
−
℃
• 177
.
Unit
Unit
ms
ms
ns
ns
ns
ns
ns
ns
ns
ms
ms
%
ns
ns
ns
ns
ns
ns
ns
%