UPD421-5 반도체 회로 부품 판매점
8K BIT STATIC RAM
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 NEC |
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
~PD421
A3
A4
A5
AS
A7
AS
Ag
110,
1/°2
1/°3
1/°4
1/°5
I/OS
1/°7
IIOS
MEMORY ARRAY
,2S ROWS
64 COLUMNS
INPUT
OATA
CONTROL
BLOCK DIAGRAM
cs-~""-'
WE-!-=t-)-------------------------~
Operating Temperature
Storage Temperature ..
Voltage on Any Pin.
Note: CD With respect to grol!nd.
..... O°C to +70°C ABSOLUTE MAXIMUM
.. -65°C to +150°C RATINGS*
. -0.5 to +7 Volts CD
COMMENT: Stress above those listed under "Absolute Maximum Ratings" may cause permanent
damage to the device. This is a stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliabil ity.
Ta = O'C to +70o e; Vee = +5V ± 10%, unless otherwise specified
LIMITS
PARAMETER SYMBOL
UNIT
MIN TYP MAX
Input Load
Current
(All Inputs Pins)
I/O Leakage
Current
Operating
Current
III
ILO
lec
Stand·bv
Current
Input Low
Voltage
Input High
Voltage
Output Low
Voltage
Output High
Voltage
IS8
VIL
VIH
VOL
VOH
-0.3
2.0
2.4
10 pA
50 pA
120 rnA
i
20 rnA
0.8 V
6.0 V
0.4 V
V
TEST CONOITIONS
VIN =0 to +5.5V
Vee''''' Max;
CS =VIL;
Outputs Open
Vee = Min. to Max.
CS = VIH
IOL =4.0mA
IOH = -1 mA
DC CHARACTERISTICS
78
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UPD421-5 data
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
UPD421-1
8K BIT STATIC RAM - NEC
UPD421-2
8K BIT STATIC RAM - NEC
UPD421-3
8K BIT STATIC RAM - NEC
UPD421-5
8K BIT STATIC RAM - NEC