EM78P5842 Datasheet, PDF (41/48 Pages) ELAN Microelectronics Corp – 8 BIT MICROCONTROLLER

EM78P5840/5841/5842
8-bit Micro-controller
XI. AC Electrical Characteristic
CPU instruction timing (Ta = 25°C, AVDD=VDD=5V, VSS=0V)
Parameter
Symbol Condition
Min
Typ Max Unit
Input CLK duty cycle
Dclk
45
50
55
%
Instruction cycle time
Tins 32.768kHz
60
us
3.582MHz
550
ns
Device delay hold time
Tdrh
16
ms
TCC input period
Ttcc Note 1
(Tins+20)/N
ns
Watchdog timer period
Twdt Ta = 25°C 16-30%
16 16+30% ms
Note 1: N= selected prescaler ratio.
ADC characteristic (VDD = 5V, Ta = +25°C, for internal reference voltage)
Parameter
Symbol Condition Min Typ Max Unit
Upper bound offset voltage
Vofh
44 52.8 mV
Lower bound offset voltage
Vofl
*These parameters are characterized but not tested.
* About ADC characteristic, please refer to next page.
32 38.4 mV
Timing characteristic (AVDD=VDD=5V,Ta=+25°C)
Description
Symbol Min Typ Max Unit
Oscillator timing characteristic
Crystal start up
32.768kHz
Tosc 400
1500 ms
3.579MHz PLL
5 10 us
Timing characteristic of reset
The minimum width of reset low pulse
The delay between reset and program start
Trst
3
uS
Tdrs
18
mS
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* This specification is subject to change without notice.
2004/11/10 V2.6