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UPD421-3 の電気的特性と機能

UPD421-3のメーカーはNECです、この部品の機能は「8K BIT STATIC RAM」です。


製品の詳細 ( Datasheet PDF )

部品番号 UPD421-3
部品説明 8K BIT STATIC RAM
メーカ NEC
ロゴ NEC ロゴ 




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UPD421-3 Datasheet, UPD421-3 PDF,ピン配置, 機能
NEe Microcomputers, Inc.
NEe
fL PD421
J.L PD421-1
fL PD421-2
fL PD421-3
J.L PD421-5
8K BIT STATIC RAM
DESCR IPTION
The NEC MPD421 is a very high speed 8192 bit static Random Access Memory organ-
ized as 1024 words by 8 bits. Features include a power down mode controlled by the
chip select input for an 80% power saving.
FEATURES
1024x8-bitOrganization
• Very Fast Access Time: 150/200/250/300/450 ns
• Single +5V Power Supply
• Low Power Standby Mode
• N-Channel Silicon Gate Process
• Fully TTL Compatible
• 6-Device Static Cell
• Three State Common I/O
• Compatible with 8108 and Equivalent Devices
• Available in 22 Pin Ceramic Dual-in-Line Package
11
PIN CONFIGURATION
A6
22 Vee
As 2
21 A7
A4 3
A3 4
AS
19 A9
A2 5 MPD lS Cs
A1 6
421 17 WE
AO
1/°1
1/°2
1/°3
GND
7
S
9
10
11
16 I/OS
15 1/°7
14 1/°6
13 1/°5
12 1/°4
PIN NAMES
AO-Ag
Address Inputs
WE Write Enable
es Chip Select
1/0,-1/08 Data Input Output
VCC
Power (+5V)
GND
Ground
77

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UPD421-3 pdf, ピン配列
CAPACITANCE Ta = 25°C; f = 1.0 MHz
PARAMETER SYMBOL
Input/Output
Capacitance
Input Capitance
CliO
CIN
LIMITS
MIN MAX
7
5
UNIT
pF
pF
l'1PD421
TEST CONDITIONS
VI/O = OV
VIN = OV
AC CHARACTERISTICS
Ta = o°c to +70'-C; vcc = +5V ± 10%, unless otherwise specified
PARAMETER
LIMITS
SYMBOL I'PD421
I'PD421·1 I'PD421·2 I'PD421·3 I'PD421-5 UNIT
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
READ CYCLE
Read Cycle Time
Address Access Time
Chip Select Access Time
Output Hold from Addre••
Change
Chip Selection To Output
in LowZ
Chip Deselection to
Output in High Z
Chip Selection to Power
UpTime
Chip Oeselection to Power
DownTime
tRC
tAA
tACS
tOH
tLZ
tHZ
tpu
tpoCD
450 300
450 300
450 300
10 10
250
250
250
10
200
10
150
200 150
200 150
10
10 10
10 10
10
0 100
0 80
0 70
0 60
0 50
00
00 0
100 80 70
60 50
ns
ns
ns
ns
ns
ns
ns
ns
WRITE CYCLE
Write Cycle Time
Chip Selection to End of
Write
Address Valid to End of
Write
Address Setup Time
Write Pulse Width
Write Recovery Time
Data Valid to End of Write
Data Hold Time
Write Enabled to Output in
High Z
Output Active from End of
Write
twc
tcw
tAW
tAS
twp
tWR
tow
tOH
twz
tow
450 300
360 240
250 200
200 160
150
130
ns
ns
360 240
200 160 130
ns
10 10
300 230
10 10
200 150
10 10
100
10 10
190 160
10 10
120 100
10 10
80 70
10
130
10
80
10
60
50
ns
ns
ns
ns
ns
ns
10 10
10 10
10 ns
Note: CD ICC (t = tPO) = 1/2 ICC Active.
79


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[ UPD421-3 データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
UPD421-1

8K BIT STATIC RAM

NEC
NEC
UPD421-2

8K BIT STATIC RAM

NEC
NEC
UPD421-3

8K BIT STATIC RAM

NEC
NEC
UPD421-5

8K BIT STATIC RAM

NEC
NEC


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