at49lh004 ATMEL Corporation, at49lh004 Datasheet - Page 23

• Manufacturer Part Number: at49lh004
• Description: 4-megabit Firmware Hub And Low-pin Count Flash Memory
• Manufacturer: ATMEL Corporation

13.1
3383D–FLASH–6/05
FWH Multiple Device Selection
The strapping values on ID[3:0] must match the values in the IDSEL field when performing
FWH memory cycles. The device will compare the values on the ID[3:0] pins with the IDSEL
field. If there is a mismatch, the device will ignore the remainder of the cycle. The device will
then enter standby mode when the FWH4/LFRAME pin is high and no internal operation is in
progress. The FWH/LAD[3:0] pins will also be placed in a high-impedance state.
Table 13-1.
0 (Boot Device)
Device
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
FWH Multiple Device Selection
ID3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ID2
ID Strapping Pins
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
ID1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
ID0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
AT49LH004
IDSEL
0000b
0001b
0010b
0011b
0100b
0101b
0110b
0111b
1000b
1001b
1010b
1011b
1100b
1101b
1110b
1111b
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