at43101 ATMEL Corporation, at43101 Datasheet - Page 7

• Manufacturer Part Number: at43101
• Description: Pcmcia Card Memory Interface Circuit With 256 Bytes Of Internal Attribute Memory Eeprom
• Manufacturer: ATMEL Corporation

The E
clocked at the leading edge of the effective write pulse that
results from the gating of the PCMCIA control signals. The
Tsu(CE), Tsu(REG), Tsu(WE) timing parameters shown in
the AC Write Characteristics guarantee adequate pulse
width for the latch clock signals. The actual write is trig-
Memory Access Functions
Standby
Byte Read, Even
Byte Read, Odd
Word Read
Odd byte only Read
Byte Write, Even
Byte Wrtite, Odd
Word Write
Odd byte only Write
2
PROM includes address and data latches which are
Mode
H only
H only
H only
H only
H only
H or L
H or L
H only
REG*
X
CE2*
H
H
H
H
H
L
L
L
L
CE1*
H
H
H
L
L
L
L
L
L
gered by the rising edge of the first of WE* or CE1* to go
high. Writes to the E2PROM Attribute Memory must
observe either a 10 ms. write recovery/cycle time or wait
until R/B* goes inactive before another write can be initiated.
A0
X
H
H
X
X
X
X
L
L
OE*
X
H
H
H
H
L
L
L
L
AT43101
WE*
X
H
H
H
H
L
L
L
L
D[15:8]
D(Odd)
D(Odd)
D(Odd)
D(Odd)
High Z
High Z
High Z
X
X
D(Even)
D(Even)
D(Even)
D(Even)
D(Odd)
D(Odd)
High Z
High Z
D[7:0]
X
7