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Número de pieza | M66220FP | |
Descripción | 256 x 8-BIT MAIL-BOX | |
Fabricantes | Mitsubishi | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de M66220FP (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
No Preview Available ! MITMSIUTBSUISBHIIS〈HDIIG〈DITIGAILTAALSSAPS〉SP〉
M6622M06S62P20/SFPP/FP
2562×568-×BI8T-BMITAIML-ABIOL-XBOX
DESCRIPTION
The M66220 is a mail box that incorporates a complete CMOS shared
memory cell of 256 × 8-bit configuration using high-performance silicon
gate CMOS process technology, and is equipped with two access
ports of A and B.
Access ports A and B are equipped with independent addresses CS,
WE and OE control pins and I/O pins to allow independent and
asynchronous read/write operations from/to shared memory
individually. This product also incorporates a port adjustment
arbitration function in address contention from both ports.
FEATURES
• Memory configuration of 256 × 8 bits
• High-speed access, address access time 40ns (typ.)
• Complete asynchronous accessibility from ports A and B
• Completely static operation
• Built-in port arbitration function
• Low power dissipation CMOS design
• 5V single power supply
• Not Ready output pin is provided (open drain output)
• TTL direct-coupled I/O
• 3-state output for I/O pins
APPLICATION
Inter-MPU data transfer memory, buffer memory for image processing
system.
PIN CONFIGURATION (Top view)
CHIP SELECT
INPUT
CSA→ 1
WRITE ENABLE
INPUT
WEA →
2
NOT READY
OUTPUT
Not
Ready
A
←
3
OUTPUT
INPUT
ENABLE
OEA
→
4
A0A→ 5
A1A→ 6
A2A→ 7
A PORT A3A→ 8
ADDRESS
INPUT A4A→ 9
A5A→ 10
A6A→ 11
A7A→ 12
A PORT
DATA I/O
I/O0A↔ 13
I/O1A↔ 14
I/O2A↔ 15
I/O3A↔ 16
I/O4A↔ 17
I/O5A↔ 18
I/O6A↔ 19
I/O7A
↔
20
GND 21
42 VCC
41 ← CSB
CHIP SELECT
INPUT
40
← WEB
WRITE
INPUT
ENABLE
39
→ Not
Ready B
NOT READY
OUTPUT
38 ← OEB
OUTPUT ENABLE
INPUT
37 ← A0B
36 ← A1B
35 ← A2B
34 ← A3B B PORT
ADDRESS
33 ← A4B INPUT
32 ← A5B
31 ← A6B
30 ← A7B
29 ↔ I/O7B
28 ↔ I/O6B
27 ↔ I/O5B
26
25
↔
↔
I/O4B
I/O3B
B PORT
DATA I/O
24 ↔ I/O2B
23 ↔ I/O1B
22 ↔ I/O0B
Outline
42P4B
42P2R-A
BLOCK DIAGRAM
NOT READY
OUTPUT Not Ready A 3
WRITE
ENABLE
INPUT
WEA
2
CHIP
SELECT INPUT
CSA
1
OUTPUT
ENABLE INPUT
OEA
4
I/O0A 13
I/O1A 14
I/O2A 15
A PORT DATA I/O
I/O3A 16
I/O4A 17
I/O5A 18
I/O6A 19
I/O7A 20
A PORT
ADDRESS INPUT
A0A 5
A1A 6
A2A 7
A3A 8
A4A 9
A5A 10
A6A 11
A7A 12
VCC
42
CONTROL
CIRCUIT
ARBITRATION
CIRCUIT
CONTROL
CIRCUIT
A0A
OEA WEA
A7A
8
I/O BUFFER
A0B
WEB
A7B
OEB
I/O BUFFER
8
8 ROW/COLUMN
DECODER
MEMORY ARRAY OF
256-WORD × 8-BIT
CONFIGURATION
ROW/COLUMN 8
DECODER
21
GND
NOT READY
39 Not Ready B OUTPUT
40 WEB
WRITE
ENABLE INPUT
41 CSB
CHIP
SELECT INPUT
38 OEB
OUTPUT
ENABLE INPUT
22 I/O0B
23 I/O1B
24 I/O2B
25 I/O3B
26 I/O4B
B PORT DATA I/O
27 I/O5B
28 I/O6B
29 I/O7B
37 A0B
36 A1B
35 A2B
34 A3B
33 A4B
32 A5B
31 A6B
30 A7B
B PORT
ADDRESS INPUT
1
1 page MITSUBISHI 〈DIGITAL ASSP〉
M66220SP/FP
ABSOLUTE MAXIMUM RATINGS (Ta = 0 ~ 70°C, unless otherwise noted)
Symbol
Parameter
Conditions
VCC Supply voltage
VI Input voltage
VO Output voltage
Pd Maximum power dissipation
Tstg Storage temperature range
When defining GND pin as a
reference.
Ta = 25°C
256 × 8-BIT MAIL-BOX
Ratings
–0.3 ~ +7.0
–0.3 ~ VCC + 0.3
0 ~ VCC
700
–65 ~ 150
Unit
V
V
V
mW
°C
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
GND
VI
Topr
Parameter
Supply voltage
Ground
Input voltage
Operating temperature range
Min.
4.5
0
0
Limits
Typ.
5.0
0
Max.
5.5
VCC
70
Unit
V
V
V
°C
ELECTRICAL CHARACTERISTICS (Ta = 0 ~ 70°C, Vcc=5V±10%, unless otherwise noted)
Symbol
Parameter
Test conditions
VIH
VIL
VOH
VOL
VOL
IIH
IIL
IOZH
IOZL
ICC
ISB1
ISB2
“H” input voltage
“L” input voltage
“H” output voltage (I/O)
“L” output voltage (I/O)
Open drain “L” output voltage (Not Ready)
“H” input current
“L” input current
Off state “H” output current
Off state “L” output current
Static current dissipation (active)
Two-port stand-by
One-port stand-by
IOH = –2mA
IOL = 4mA
IOL = 8mA
VI = VCC
VI = GND
CS = VIH or OE = VIH
VO = VCC
CS = VIH or OE = VIH
VO = GND
CS < 0.2V,
Another input VIN > VCC – 0.2V
or VIN < 0.2V, Output pin open
CSA, CSB = VIH
CSA or CSB = VIH
IOUT = 0mA
(Active port output pin open)
ISB3 Two-port full stand-by
CSA, CSB > VCC – 0.2V
Another input VIN > VCC – 0.2V
or VIN < 0.2V
ISB4 One-port full stand-by
CSA or CSB > VCC – 0.2V
Another input VIN > VCC – 0.2V
or VIN < 0.2V, IOUT = 0mA
(Active port output pin open)
CI Input capacitance
CO Output capacitance in off state
Notes 3: The direction in which current flows into the IC is defined as positive (no sign).
4: The above typical values are standard values for VCC = 5V and Ta = 25°C.
Min.
2.2
–0.3
2.4
Limits
Typ.
Max.
VCC+0.3
0.8
0.5
0.5
10.0
–10.0
Unit
V
V
V
V
V
µA
µA
10.0 µA
–10.0
µA
60 mA
5 mA
60 mA
0.1 mA
30 mA
10 pF
15 pF
5
5 Page MITSUBISHI 〈DIGITAL ASSP〉
M66220SP/FP
256 × 8-BIT MAIL-BOX
SWITCHING CHARACTERISTICS MEASUREMENT CIRCUIT
Input pulse level
: VIH = 3.0V, VIL = 0V
Input pulse rise/fall time
: tr/tf = 5ns
Input timing reference voltage : 1.5V
Output timing decision voltage : 1.5V
Output load
: Figure 1 ~ 3 (The capacitance includes stray wiring capacitance and the probe input capacitance.)
+ 5V
+ 5V + 5V
1250Ω
1250Ω
575Ω
I/O I/O Not Ready
775Ω
100pF
775Ω
5pF
50pF
Fig 1. I/O Output Load
Fig 2. I/O Output Load
(to ten, tdis)
Fig 3. Not Ready Output Load
11
11 Page |
Páginas | Total 11 Páginas | |
PDF Descargar | [ Datasheet M66220FP.PDF ] |
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