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HT23C256 数据表(PDF) 4 Page - Holtek Semiconductor Inc

部件名 HT23C256
功能描述  CMOS 32Kx 8-Bit Mask ROM
Download  8 Pages
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制造商  HOLTEK [Holtek Semiconductor Inc]
网页  http://www.holtek.com
标志 HOLTEK - Holtek Semiconductor Inc

HT23C256 数据表(HTML) 4 Page - Holtek Semiconductor Inc

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Supply voltage: 4.5V~5.5V
Ta=–40
°C to 85°C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Unit
VCC
Conditions
VCC
Operating Voltage
4.5
5.5
V
ICC
Operating Current
5V
O/P Unload,
f=5MHz
——
25
mA
VIL
Input Low Voltage
5V
VSS
0.8
V
VIH
Input High Voltage
5V
2.2
VCC
V
VOL
Output Low Voltage
5V
IOL=3.2mA
0.4
V
VOH
Output High Voltage
5V
IOH=–1mA
2.4
VCC
V
ILI
Input Leakage Current
5V
VIN=0 to VCC
——
10
µA
ILO
Output Leakage Current
5V
VOUT=0 to VCC
——
10
µA
ISTB1
Standby Current
5V
CE=VIL
CE=VIH
1.5
mA
ISTB2
Standby Current
5V
CE
0.2V
CE
VCC–0.2V
——
30
µA
CIN
Input Capacitance (See note)
f=1MHz
10
pF
COUT
Output Capacitance (See note)
f=1MHz
10
pF
Note: These parameters are periodically sampled but not 100% tested.
A.C. Characteristics
Ta=–40
°C to 85°C
Symbol
Parameter
VCC=2.7V~3.6V
VCC=4.5V~5.5V
Unit
Min.
Max.
Min.
Max.
tCYC
Cycle Time
250
150
ns
tAA
Address Access Time
250
150
ns
tACE
Chip Enable Access Time
250
150
ns
tAOE
Output Enable Access Time
150
80
ns
tOH
Output Hold Time
10
ns
tOD
Output Disable Time (See Note)
70
ns
tOE
Output Enable Time (See Note)
10
ns
Note: These parameters are periodically sampled but not 100% tested.
HT23C256
4
24th Aug ’98


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