AT49LH004-33JX SL383 Atmel, AT49LH004-33JX SL383 Datasheet - Page 22
![IC FLASH 4MBIT 33MHZ 32PLCC](/photos/7/21/72190/453-32-plcc_sml.jpg)
AT49LH004-33JX SL383
Manufacturer Part Number
AT49LH004-33JX SL383
Description
IC FLASH 4MBIT 33MHZ 32PLCC
Manufacturer
Atmel
Datasheet
1.AT49LH004-33JC.pdf
(40 pages)
Specifications of AT49LH004-33JX SL383
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
4M (512K x 8)
Speed
33MHz
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 85°C
Package / Case
32-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
12. General Purpose Input Register
13. Multiple Device Selection
22
AT49LH004
A General-purpose Input Register is provided to read the status of the GPI[4:0] pins when
using the FWH/LPC interface. Since this is a pass-through register, there is no default value. It
is recommended that the GPI[4:0] pins be in their desired state before FWH4/LFRAME is
brought low for the beginning of the next bus cycle and remain in that state until the end of the
cycle.
Table 12-1.
Table 12-2.
Multiple devices may be used in a system to increase the overall memory density. By using
the four ID strapping pins, ID[3:0], up to 16 devices may be attached to the same bus. BIOS
support, bus loading, or the attaching bridge may limit the actual number of devices that can
be connected to the bus.
The boot device must have ID[3:0] equal to 0000b, and all subsequent devices should use
sequential up-count strapping.
Register Name
7:5
Bit
GPI_REG
4
3
2
1
0
GPI Register Memory Address
General-purpose Input Register
GPI_REG4
GPI_REG3
GPI_REG2
GPI_REG1
GPI_REG0
Reserved
Associated Pins
Name
GPI[4:0]
Description
Reserved for future use.
0
1
0
1
0
1
0
1
0
1
FFBC0100H
FWH Mode
Register Memory Address
GPI4 input pin is at V
GPI4 input pin is at V
GPI3 input pin is at V
GPI3 input pin is at V
GPI2 input pin is at V
GPI2 input pin is at V
GPI1 input pin is at V
GPI1 input pin is at V
GPI0 input pin is at V
GPI0 input pin is at V
FF7C0100H
LPC Mode
IL
IH
IL
IH
IL
IH
IL
IH
IL
IH
.
.
.
.
.
.
.
.
.
.
Register Type
3383D–FLASH–6/05
Read Only