HD404449 Datasheet, PDF (116/123 Pages) Hitachi Semiconductor – HD404449 SERIES

HD404449 Series
AC Characteristics (HD404448, HD404449: V_CC = 2.7 to 6.0 V, GND = 0 V, T_a = –20°C to +75°C;
HD4074449: V_CC = 2.7 to 5.5 V, GND = 0 V, T_a = –20°C to +75°C, unless otherwise specified)
Item
Clock oscillation
frequency
Instruction cycle
time
Symbol Pin(s)
f _OSC
OSC₁, OSC₂
Min Typ
0.4
Max Unit
4.0 MHz
X1, X2
t _cyc
—
— 32.768 — kHz
1.0 —
10 µs
t _subcyc
—
— 244.14 — µs
— 122.07 — µs
Oscillation
t _RC
stabilization time
(ceramic)
Oscillation
t _RC
stabilization time
(crystal)
External clock high t_CPH
width
External clock low t_CPL
width
External clock rise t_CPr
time
External clock fall t_CPf
time
INT₀–INT₃, EVNB, t_IH
EVND high widths
INT₀–INT₃, EVNB, t_IL
EVND low widths
RESET high width t_RSTH
STOPC low width t_STPL
RESET fall time t_RSTf
STOPC rise time t_STPr
OSC₁, OSC₂ — —
OSC₁, OSC₂ — —
X1, X2
OSC₁
——
——
105 —
OSC₁
105 —
OSC₁
——
OSC₁
——
INT₀–INT₃,
2—
EVNB, EVND
INT₀–INT₃,
2—
EVNB, EVND
RESET
2—
STOPC
1—
RESET
——
STOPC
——
7.5 ms
40 ms
60 ms
3s
— ns
— ns
20 ns
20 ns
— t_cyc/
t _subcyc
— t_cyc/
t _subcyc
—
t _cyc
— t_RC
20 ms
20 ms
Test Condition
1/4 division
—
—
32-kHz oscillator,
1/8 division
32-kHz oscillator,
1/4 division
—
Notes
1
1
2
HD404448, HD404449 2
V_CC=3.0 to 6.0V
HD4074449
V_CC=3.5 to 5.5V
—
2
T_a = –10°C to +60°C
3
—
4
—
4
—
4
—
4
—
5
—
5
—
6
—
7
—
6
—
7
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