參數(shù)資料
型號(hào)： HD40L4812
廠商： Hitachi,Ltd.
英文描述： 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
中文描述： 4位單片機(jī)（4位單片微計(jì)算機(jī)）
文件頁(yè)數(shù)： 92/98頁(yè)
文件大小： 621K
代理商： HD40L4812
HD404818 Series
92
AC Characteristics (HD40L4812, HD40L4814, HD40L4816, HD40L4818: V
CC
= 2.7 to 6 V;
HD407L4818: V
CC
= 3 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
Oscillation
frequency
f
OSC
OSC
1
, OSC
2
250
800
900
kHz
X1, X2
32.768
kHz
Instruction cycle
time
t
cyc
4.45
5
16
μ
s
Oscillator
stabilization time
t
RC
OSC
1
, OSC
2
7.5
ms
f
OSC
= 400 kHz
1
7.5
ms
f
OSC
= 800 kHz
T
a
= –10
°
to 60
°
C
1
X1, X2
3
s
2
External clock
frequency
f
CP
OSC
1
250
900
kHz
3
External clock high
width
t
CPH
OSC
1
525
ns
3
External clock low
width
t
CPL
OSC
1
525
ns
3
External clock rise
time
t
CPr
OSC
1
30
ns
3
External clock fall
time
INT
0
high width
t
CPf
OSC
1
30
ns
3
t
IH
INT
0
2
t
cyc/
t
subcyc
t
cyc/
t
subcyc
t
cyc
t
cyc
t
cyc
pF
4, 6
INT
0
low width
t
IL
INT
0
2
4, 6
INT
1
high width
INT
1
low width
RESET high width t
RSTH
Input capacitance
t
IH
t
IL
INT
1
INT
1
RESET
2
4
2
4
2
5
C
in
D
10
15
f = 1 MHz, V
in
= 0 V 8
f = 1 MHz, V
in
= 0 V 9
f = 1 MHz, V
in
= 0 V
90
pF
All pins except D
10
15
pF
Reset fall time
t
RSTf
t
CSTB
20
ms
5
Analog
comparator
stabilization time
Notes: 1. The oscillator stabilization time is the period from when V
reaches 2.7 V (HD407L4818: V
=
3.0 V) at power-on until the oscillator stabilizes, or after RESET goes high. At power-on or when
recovering from stop mode, RESET must be kept high for more than t
. Since t
depends on
the ceramic oscillator’s circuit constant and stray capacitance, consult with the ceramic oscillator
manufacturer when designing the reset circuit.
D
12
, D
13
2
t
cyc
7
相關(guān)PDF資料
PDF描述
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HD404816 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
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