EM6605 EM Microelectronic, EM6605 Datasheet - Page 39

• Manufacturer Part Number: EM6605
• Description: 4 bit Microcontroller
• Manufacturer: EM Microelectronic

17.7. RC Oscillator
T= +25°C (unless otherwise specified)
Parameter
Fabrication process stability
Voltage stability
Temperature Stability (note2)
External resistor for frequency
(note4) (note5)
Ext. capacitor (parallel to Rext)
(note4)
Oscillator start time (note3)
System start time
(oscillator+cold start reset)
Oscillation detector frequency
Note1: Typical value of ±10% for “Fabrication process stability” gives a range where about 93-98% of all
Note2: Oscillator stability in voltage and temperature is for frequency range from 30kHz - 300 kHz
Note3: Oscillator start time is for the worst case - 32 kHz frequency (low frequency)
Note4: External capacitor parallel to Rext which set the system frequency – The capacitor must be as close as
Note5: External resistor Rext which can set the frequency can have bigger range but this should be discussed
17.8. Input Timing characteristics
1.8V<Vdd<5.0V, -20°C <T<85°C (unless otherwise specified) at f=32kHz
Parameter
RESET pulse length to exit
SLEEP mode
RESET pulse length (debounced)
PortA , C pulse length (debounced)
RESET pulse length (debounced)
PortA , C pulse length (debounced)
pieces are situated relative to their mean frequency f *.
possible to RCin pin. The connection tw. Resistor and Capacitor on this pin must be really as short as
possible otherwise the RC oscillator has bigger jitter. (capacitor is not obligatory but can improve voltage
dependance and reduce jitter.
by EM for special cases only. Tests were made only during qualification of the product.
(note3)
(note2)
Conditions
Vdd>1.8V
Vdd>1.8V
Vdd>1.8V
Vdd>1.8V &
Vdd<5.0V
(note1)
2.4 - 5.0 V
-40°C- +85°C
Conditions
RESET from
SLEEP
DebCK = 0
DebCK = 0
DebCK = 1
DebCK = 1
Symb.
Df / f *
Df /f * DU
Df /f * DT
Rext
Cext
tdosc
tdsys
f
OD
Min.
-20
80*
-2%
0.02%
Symb.
t
tdeb0
tdeb0
tdeb1
tdeb1
RESsl
120-330
+0.06%
Typ.
150
0.1
3
4.0
10 *
0.3
© EM Microelectonic-Marin SA, 2/99, Rev. B/243
Min.
16
16
+20
2
2
2
Max.
+2%
0.1%
600*
390
1
4
15
EM6605
Unit
Unit
1/V
1/°C
µs
ms
ms
ms
ms
%
kHz
k
pF
ms
ms
39