1.5.2. Ordering Code
Table 9. EPCQ-A Device Ordering Codes
Device Ordering Code
(3)
EPCQ4A EPCQ4ASI8N
EPCQ16A EPCQ16ASI8N
EPCQ32A EPCQ32ASI8N
EPCQ64A EPCQ64ASI16N
EPCQ128A EPCQ128ASI16N
1.6. Memory Array Organization
Table 10. Supported Memory Array Organization in EPCQ-A Devices
Details EPCQ4A EPCQ16A EPCQ32A EPCQ64A EPCQ128A
Bytes 524,288 bytes
[4 megabits
(Mb)]
2,097,152
bytes [16 Mb]
4,194,304
bytes (32 Mb)
8,388,608
bytes (64 Mb)
16,777,216
bytes (128 Mb)
Number of sectors 8 32 64 128 256
Bytes per sector 65,536 bytes [512 kilobits (Kb)]
Total numbers of subsectors
(4)
128 512 1,024 2,048 4,096
Bytes per subsector 4,096 bytes (32 Kb)
Pages per sector 256
Total number of pages 2,048 8,192 16,384 32,768 65,536
Bytes per page 256 bytes
1.6.1. Address Range for EPCQ4A
Table 11. Address Range for Sectors 7..0 and Subsectors 127..0 in EPCQ4A Devices
Sector Subsector Address Range (Byte Addresses in HEX)
Start End
7 127 7F000 7FFFF
126 7E000 7EFFF
.. .. ..
114 72000 72FFF
113 71000 71FFF
continued...
(3)
N indicates that the device is lead free.
(4)
Every sector is further divided into 16 subsectors with 4 KB of memory. Therefore, there are
128 (32 x 16) subsectors for the EPCQ4A device, 512 (32 x 16) subsectors for the EPCQ16A
device, 1,024 (64 x 16) subsectors for the EPCQ32A device, 2,048 (128 x 16) subsectors for
the EPCQ64A device, and 4,096 (256 x 16) subsectors for the EPCQ128A device.
1. EPCQ-A Serial Configuration Device Datasheet
CF52014 | 2018.04.11
EPCQ-A Serial Configuration Device Datasheet
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