AT43101 Datasheet, PDF (1/14 Pages) ATMEL Corporation – PCMCIA Card Memory Interface Circuit with 256 Bytes of Internal Attribute Memory EEPROM

Features
Supports PCMCIA PC Card Standard - Release 2.1
• _{Directly connects to PCMCIA Connector}
• _{No Additional Circuits Required}
•• _{256 x 8 Internal Parallel E2PROM for CIS}
Endurance: 10,000 Write Cycles
Data Retention: 10 Years
Internally Controlled Write Algorithm
Operates over VCC = 4.5 to 5.5 Volts
• _{64 Pin TQFP, Max. Height = 1.2 mm Mounted}
• _{Usage is Two Devices Per Card}
• _{Dual Mode Device with Mode Select Pin}
•• _{Supports Up to 64 Mbytes of:}
Flash
E²PROM
SRAM
ROM
OTP
Description
The AT43101 is a low power, high integration PCMCIA interface chip set for memory
cards. It provides a complete PCMCIA PC Card Standard Release 2.1 compliant inter-
face with no other support devices. Two AT43101’s are used on each memory card.
A mode select pin configures the device for operation as a low order address and data
buffer when low and as the high order address buffer/decoder when high. The two
devices together form a complete address and data buffer, address decoder, memory
device selection logic, read and write control logic and a Card Information Structure
(CIS). Eight chip enable outputs are provided, supporting 16 memory devices. The
device is pinned out for direct connection to the PCMCIA connector without PC trace
cross-overs. Its 1.0 mm thick body allows population of both sides of a Type 1
PCMCIA card.
PCMCIA Card
Memory
Interface
Circuit with
256 Bytes of
Internal
Attribute
Memory
EEPROM
AT43101
OE*
1
D1
2
D9
3
D2
4
D10
5
D3
6
D11
7
VSS
8
D4
9
D12
10
D5
11
D13
12
D6
13
D14
14
D7
15
D15
16
AT43101
MODE A
48
A8
A10
1
47
ID1
A11
2
46
ID9
A17
3
45
ID2
A18
4
44
ID10
A19
5
43
ID3
A20
6
42
ID11
A21
7
41
VSS
VSS
8
40
ID4
SEL0
9
39
ID12
A9
10
38
ID5
A13
11
37
ID13
A14
12
36
ID6
A16
13
35
ID14
A15
14
34
ID7
A12
15
33
ID15
A22
16
AT43101
MODE B
48
IA10
47
IA11
46
IA17
45
IA18
44
IA19
43
IA20
42
IA21
41
VSS
40
Reset
39
IA9
38
IA13
37
IA14
36
IA16
35
IA15
34
IA12
33
IA22