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參數(shù)資料
| 型號(hào)： | SEA Series |
| 英文描述： | SRAM Memory Card 128 kB Through512 kB(128 kB - 512 kB靜態(tài)RAM存儲(chǔ)器卡) |
| 中文描述： | SRAM存儲(chǔ)卡128 kB的Through512 kB左右（128 kB的- 512 KB的靜態(tài)RAM的存儲(chǔ)器卡） |
| 文件頁(yè)數(shù)： | 4/9頁(yè) |
| 文件大?。?/td> | 98K |
| 代理商： | SEA SERIES |
June 2000 Rev. 3 - ECO #12894
4
PCMCIA Flash Memory Card
SEA Series
PC Card Products
Symbol
A0 - A25
Type
Name and Function
INPUT
ADDRESS INPUTS:
A0 through A25 enable direct addressing of up
to 64MB of memory on the card. Signal A0 is not used in word access
mode. A25 is the most significant bit. (address pins used are based on
card density,see pinout for highest used address pin)
DATA INPUT/OUTPUT:
DQ0 THROUGH DQ15 constitute the
bi-directional databus. DQ0 - DQ7 constitute the lower (even) byte and
DQ8 - DQ15 the upper (odd) byte. Upper byte is Not Connected on
this card.
CARD ENABLE 1 AND 2:
CE1# enables even byte accesses,
CE2# control signal in PCMCIA standard, to access high byte, - not
used on this card
OUTPUT ENABLE:
Active low signal enabling read data from the
memory card.
WRIT E ENABLE:
Active low signal gating write data to the memory
card.
R EADY /BUSY OUTPUT:
Not used for SRAM cards
CARD DET ECT 1 and 2:
Provide card insertion detection. These
signals are connected to ground internally on the memory card. The
host socket interface circuitry shall supply 10K-ohm or larger pull-up
resistors on these signal pins.
WRIT E PROT ECT:
Follows hardware Write Protect Switch. When
Switch is placed in on position, signal is pulled high (10K ohm). When
switch is off signal is pulled low.
PROGRAM/ERASE POWER SUPPLY:
Not used for SRAM
cards.
CARD POWER SUPPLY:
5.0V for all internal circuitry.
GROUND:
for all internal circuitry.
ATTRIBUT E MEMORY SEL ECT :
only used with cards built with
optional attribute memory.
R ESET:
Not used for SRAM cards
WAIT:
This signal is pulled high internally for compatibility. No wait
states are generated.
BATT ERY VOLTAGE D ET ECT:
Provides status of Battery
voltage.
BVD2 = BVD1 = Voh (battery voltage is guaranteed to retain data)
BVD2 = Vol, BVD1 = Voh (data is valid, battery recharge required)
BVD2 = BVD1 = Vol (data may no longer be valid, battery requires
extended recharge)
VOLTAGE SENSE:
Notifies the host socket of the card's VCC
requirements. VS1 and VS2 are open to indicate a 5V, 16 bit card has
been inserted.
R ESERV ED FOR FUTURE USE
NO INT ERNAL CONNECTION TO CARD:
pin may be driven
or left floating
DQ0 – DQ7
DQ8 – DQ15
INPUT/OUT
PUT
CE1#, CE2#
INPUT
OE#
INPUT
WE#
INPUT
RDY /BSY #
CD1#, CD2#
OUTPUT
OUTPUT
WP
OUTPUT
VPP1, VPP2
N.C.
VCC
GND
REG #
INPUT
RST
WAIT #
INPUT
OUTPUT
BVD1, BVD2
OUTPUT
VS1, VS2
OUTPUT
RFU
N.C.
Card Signal Description
FUNCTIONAL TRUTH TABLE
READ function
Function Mode
Standby Mode
Byte Access (8 bits)
Common Memory
/REG
D15-D8
X
High-Z
H
High-Z
Attribute Memory
/REG
D15-D8
X
High-Z
L
High-Z
/CE2 /CE1
X
X
/OE
X
L
/WE
X
H
D7-D0
High-Z
Data Out
D7-D0
High-Z
Data Out
H
L
WRITE function
Standby Mode
Byte Access (8 bits)
X
X
H
L
X
H
X
L
X
H
X
X
X
X
L
X
X
X
Data In
Data In
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