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參數資料
| 型號： | SAA4955TJ |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 存儲器 |
| 英文描述： | 2.9-Mbit field memory |
| 中文描述： | SPECIALTY MEMORY CIRCUIT, PDSO40 |
| 封裝： | PLASTIC, SOJ-40 |
| 文件頁數： | 3/28頁 |
| 文件大小： | 188K |
| 代理商： | SAA4955TJ |
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1999 Apr 29
3
Philips Semiconductors
Product specification
2.9-Mbit field memory
SAA4955TJ
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
MGK676
SERIAL WRITE REGISTER
20-WORD (
×
13)
mini cache write control
+
cache transfer
mini cache read control
OE
internal
INPUT BUFFER
PARALLEL WRITE REGISTER
20-WORD (
×
13)
20
×
(12
+
1)
MEMORY ARRAY
245760-WORD (
×
12)
SAA4955TJ
MEMORY
ARBITRATION
LOGIC
WRITE ADDRESS
COUNTER
REFRESH ADDRESS
COUNTER
READ ADDRESS
COUNTER
WRITE MINI CACHE
12-WORD (
×
12)
DATA INPUT AND
WRITE MASK
BUFFER (
×
13)
INPUT BUFFER
(
×
3)
SERIAL WRITE CONTROLLER
CLOCK
OSCILLATOR
IE
internal
OE
internal
D0
internal
20
×
(12
+
1)
PARALLEL READ REGISTER
20-WORD (
×
12)
20
×
12
12
27 to 38
23
OE
Q0 to Q11
RE
RSTR
SRCK
24
25
26
SERIAL READ REGISTER
20-WORD (
×
12)
12
20
×
12
12
1
22
100 nF
12
14 to 3
18
17
16
15
12
+
1
+
3.3 V
IE
internal
D0
internal
cache
transfer
READ MINI CACHE
12-WORD (
×
12)
DATA MUX
DATA OUTPUT
BUFFER (
×
12)
(
×
4)
12
SERIAL READ CONTROLLER
3
3
write
control
write
acknowledge
read
control
read
acknowledge
load write
block
address
load read
block
address
refresh clock
IE internal
D0 to D11
IE
WE
RSTW
SWCK
GNDP
2
GND
39
GNDO
40
GNDP
VDD(O)
21
VDD(P)
20
VDD(P)
19
VDD
Pins 20 and 21 (V
) should be connected to the supply voltage of the driving circuit that generates the input voltages. This could be, for instance,
5.5 V instead of 3.3 V. Pins 19 and 22 (V
DD
and V
DD(O)
) require a 3.3 V supply.
相關PDF資料 |
PDF描述 |
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| SAA4956TJ | 2.9-Mbit field memory with noise reduction |
| SAA4960 | Integrated PAL comb filter |
| SAA4963 | Integrated NTSC comb filter |
| SAA4963T | Integrated NTSC comb filter |
| SAA4970T | Economical video processing IC ECOBENDIC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SAA4956TJ | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.9-Mbit field memory with noise reduction |
| SAA4960 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated PAL comb filter |
| SAA4963 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated NTSC comb filter |
| SAA4963T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated NTSC comb filter |
| SAA4970T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economical video processing IC ECOBENDIC |
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