參數(shù)資料
型號: HD4074449
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計算機)
中文描述: 4位HMCS400系列微機(4位單片微計算機)
文件頁數(shù): 116/123頁
文件大?。?/td> 726K
代理商: HD4074449
HD404449 Series
116
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
Symbol
Pin(s)
Min Typ
Max Unit
Test Condition
Notes
Clock oscillation
frequency
f
OSC
OSC
1
, OSC
2
0.4
4.0
MHz
1/4 division
1
X1, X2
32.768 —
kHz
Instruction cycle
time
t
cyc
1.0
10
μ
s
1
t
subcyc
244.14 —
μ
s
32-kHz oscillator,
1/8 division
122.07 —
μ
s
32-kHz oscillator,
1/4 division
Oscillation
stabilization time
(ceramic)
t
RC
OSC
1
, OSC
2
7.5
ms
2
Oscillation
stabilization time
(crystal)
t
RC
OSC
1
, OSC
2
40
ms
HD404448, HD404449
V
=3.0 to 6.0V
HD4074449
V
CC
=3.5 to 5.5V
2
60
ms
2
X1, X2
3
s
T
a
= –10
°
C to +60
°
C
3
External clock high
width
t
CPH
OSC
1
105 —
ns
4
External clock low
width
t
CPL
OSC
1
105 —
ns
4
External clock rise
time
t
CPr
OSC
1
20
ns
4
External clock fall
time
INT
–INT
,
EVNB
,
EVND high widths
t
CPf
OSC
1
20
ns
4
t
IH
INT
0
–INT
3
,
EVNB
, EVND
INT
0
–INT
3
,
EVNB
, EVND
2
t
cyc
/
t
subcyc
t
cyc
/
t
subcyc
t
cyc
t
RC
ms
5
INT
–INT
,
EVNB
,
EVND low widths
t
IL
2
5
RESET high width t
RSTH
STOPC
low width
RESET
STOPC
2
6
t
STPL
t
RSTf
t
STPr
1
7
RESET fall time
STOPC
rise time
RESET
STOPC
20
6
20
ms
7
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