Datasheet

©2011 Silicon Storage Technology, Inc. DS25086A 11/11
15
8 Mbit LPC Flash
SST49LF080A
Data Sheet
A
Microchip Technology Company
Registers
There are two registers available on the SST49LF080A, the General Purpose Inputs Registers
(GPI_REG) and the JEDEC ID Registers. Since multiple LPC memory devices may be used to
increase memory densities, these registers appear at its respective address location in the 4 GByte
system memory map. Unused register locations will read as 00H. Any attempt to read registers during
internal Write operation will respond as “Write operation status detection” (Data# Polling or Toggle Bit).
Any attempt to write any registers during internal Write operation will be ignored. Table 9 lists
GPI_REG and JEDEC ID address locations for SST49LF080A with its respective device strapping.
Table 8: General Purpose Inputs Register
Bit Function
Pin #
32-PLCC 32-TSOP
7:5 Reserved - -
4 GPI[4]
Reads status of general
purpose input pin
30 6
3 GPI[3]
Reads status of general
purpose input pin
311
2 GPI[2]
Reads status of general
purpose input pin
412
1 GPI[1]
Reads status of general
purpose input pin
513
0 GPI[0]
Reads status of general
purpose input pin
614
T8.0 25026