EM78P809N
8-Bit Microcontroller
6.2 AC Electrical Characteristic
(Ta=- 40°C ~ 85 °C, VDD=5V ± 5%, VSS=0V)
Symbol
Parameter
Conditions
Min
Typ Max Unit
50 55
Dclk
Input CLK duty cycle
45
%
Crystal type (high frequency)
RC type
200
500
DC ns
DC ns
Instruction cycle time
(CLKS="0")
Tins
Ttcc
(Tins+20)/
N*
TCC input period
ns
Device reset hold
time
Tdrh
Trst
Ta = 25°C
11.3
2000
11.3
16.2 21.6 ms
ns
/RESET pulse width Ta = 25°C
Watchdog timer
Ta = 25°C
period
Twdt
Tset
16.2 21.6 ms
Input pin setup time
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
Thold Input pin hold time
20
Tdelay Output pin delay time Cload=20pF
50
Tstup1 SDI data setup time Setup time of SDI data input to SCK↑or SCK↓
-
25 50
25 50
25 50
Thold1 SDI data hold time
Hold time of SDI data input to SCK↓or SCK↑
-
Tvalid1 SDO output valid time SCK↑or SCK↓to SDO data output
-
Tsckh SCK input high time Slave mode (Fmain=8 MHz)
200
200
400
-
-
-
-
-
-
Tsckl SCK input low time
Slave mode (Fmain=8 MHz)
Tsetup2 Slave mode setup
time
/SS↓to SCK↑or SCK↓(Fmain=8 MHz)
Tdelay1 Slave mode unselect
delay time
-
25 50
ns
/SS↑to SDO output hi-impedance delay time
* N= selected prescaler ratio
Product Specification (V1.0) 07.26.2005
• 67
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
