AT49LH002-33JC Atmel, AT49LH002-33JC Datasheet - Page 19

• Manufacturer Part Number: AT49LH002-33JC
• Description: IC FLASH 2MBIT 33MHZ 32PLCC
• Manufacturer: Atmel

Specifications of AT49LH002-33JC

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 2M (256K 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: Contains lead / RoHS non-compliant

Table 12. Function of Sector Locking Bits
Table 13. Valid Sector Locking Register Values
General Purpose Input Register
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 14. GPI Register Memory Address
3377B–FLASH–9/03
Register Name
Bit
7:3
2
1
0
GPI_REG
Data
07H
06H
05H
04H
03H
02H
01H
00H
Lock-Down
Read-Lock
Write-Lock
Reserved
Name
Resulting Sector State
Sector is read and write locked down.
Sector is read locked down.
Sector is read and write locked but not locked down.
Sector is read locked but not locked down.
Sector is write locked down.
Sector is locked open (full access locked down).
Sector is write locked but not locked down. This is the default state.
Sector is open for full access.
Associated Pins
Description
Reserved for future use.
0
1
0
1
0
1
GPI[4:0]
Sector is not read-locked.
Normal read operations in the sector can occur. This is the default state.
Sector is read-locked.
Read operations within the sector are prevented. Data read will be 00H.
Sector is not locked down.
The Read-Lock and Write-Lock bits may be changed. This is the default state.
Sector is locked down.
The Read-Lock and Write-Lock bits cannot be changed. Once the sector is locked down, it will
remain locked down until the device is reset (using the RST or INIT signals) or power-cycled.
Sector is not write-locked.
Normal program and erase operations to the sector can occur.
Sector is write-locked.
Program and erase operations to the sector are prevented. This is the default state.
FFBC0100H
FWH Mode
Register Memory Address
FF7C0100H
LPC Mode
AT49LH002
Register Type
Read Only
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