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參數資料
| 型號： | W55212B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | SRAM |
| 英文描述： | 256K×1bit CMOS Static RAM For Serial Voice Recording(用于錄音的128K×1位的CMOS靜態RAM) |
| 中文描述： | 256K X 1 STANDARD SRAM, 80 ns, PDIP18 |
| 文件頁數： | 2/7頁 |
| 文件大小： | 84K |
| 代理商： | W55212B |
W55212B
- 2 -
PIN DESCRIPTION
NO.
PIN
I/O
DESCRIPTION
6
V
DD
PWR
Positive power supply
7
CS
I
Chip-inhibit when CS = 1; chip-select when CS = 0 or open (with internal
pull-low resistor)
8
W/R
I
Write-in control when W/R = 1, read-out control when W/R = 0
9
EOP
O
End signal output
10
ADDR
I
Clock input for start address
11
DATA
B
Bidirectional data pin
12
CLK
I
Clock input for address increment
13
V
SS
PWR
Ground
BLOCK DIAGRAM
Control
Circuits
Address
Controller
SRAM
256K x 1 Bit
DATA
ADDR
CLK
W/R
CS
EOP
FUNCTIONAL DESCRIPTION
TRUTH TABLE
CS
H
L
L
W/R
X
H
L
MODE
DATA PIN
High Z
Data in
Data out
V
DD
CURRENT
I
SB
I
OP
I
OP
Note selected
Write
Read
When the chip is unselected, the W/R signal will be transmitted to the EOP pin.
相關PDF資料 |
PDF描述 |
|---|---|
| W55412A | VOICE PROM (256K OTP) |
| W55F05 | 4 Mbit Uniform Sector, Serial Flash Memory |
| W55F10 | 4 Mbit Uniform Sector, Serial Flash Memory |
| W55F20 | 4 Mbit Uniform Sector, Serial Flash Memory |
| W55FXX | 4 Mbit Uniform Sector, Serial Flash Memory |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W55412A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:VOICE PROM (256K OTP) |
| W55F01 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| W55F05 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:SERIAL FLASH EEPROM SERIES |
| W55F10 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:SERIAL FLASH EEPROM SERIES |
| W55F10A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SERIAL EEPROM|FLASH|CMOS|PLASTIC |
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