User Manual

95
ATAR862-3
4556B–4BMCU–02/03
AC Characteristics
Supply Voltage V
DD
= 2.0 V to 4.0 V, V
SS
= 0 V, T
amb
= 25°C unless otherwise specified.
Parameters Test Conditions Symbol Min. Typ. Max. Unit
Operation Cycle Time
System clock cycle V
DD
= 2.0 V to 4.0 V
T
amb
= -40°C to +125°C
t
SYSCL
500 4000 ns
V
DD
= 2.4 V to 4.0 V
T
amb
= -40°C to +125°C
t
SYSCL
250 4000 ns
Timer 2 input Timing Pin T2I
Timer 2 input clock f
T2I
5MHz
Timer 2 input LOW time Rise/fall time < 10 ns t
T2IL
100 ns
Timer 2 input HIGH time Rise/fall time < 10 ns t
T2IH
100 ns
Timer 3 Input Timing Pin T3I
Timer 3 input clock f
T3I
SYSCL/2 MHz
Timer 3 input LOW time Rise/fall time < 10 ns t
T3IL
2t
SYSCL
ns
Timer 3 input HIGH time Rise/fall time < 10 ns t
T3IH
2t
SYSCL
ns
Interrupt Request Input Timing
Interrupt request LOW time Rise/fall time < 10 ns t
IRL
100 ns
Interrupt request HIGH time Rise/fall time < 10 ns t
IRH
100 ns
External System Clock
EXSCL at OSC1, ECM = EN Rise/fall time < 10 ns f
EXSCL
0.5 4 MHz
EXSCL at OSC1, ECM = DI Rise/fall time < 10 ns f
EXSCL
0.02 4 MHz
Input HIGH time Rise/fall time < 10 ns t
IH
0.1 µs
Reset Timing
Power-on reset time V
DD
> V
POR
t
POR
1.5 5 ms
RC Oscillator 1
Frequency f
RcOut1
3.8 MHz
Stability V
DD
= 2.0 V to 4.0 V
T
amb
= -40°C to +105°C
Df/f ±50 %
RC Oscillator 2 – External Resistor
Frequency R
ext
= 170 kW f
RcOut2
4MHz
Stability V
DD
= 2.0 V to 4.0 V
T
amb
= -40°C to +105°C
Df/f ±15 %
Stabilization time t
S
10 µs
4-MHz Crystal Oscillator (Operating Range V
DD
= 2.2 V to 4.0 V)
Frequency f
X
4MHz
Start-up time t
SQ
5ms
Stability Df/f -10 10 ppm
Integrated input/output capacitances
(mask programmable)
C
IN
/C
OUT
programmable in steps of
2pF
C
IN
C
OUT
0
0
20
20
pF
pF