EPCQ-A Serial Configuration Device Datasheet

ID 683818
Date 10/01/2019
Public
Document Table of Contents

1.8.1. Read Status Operation

The status register can be read continuously and at anytime, including during a write or erase operations.

Figure 4. Read Status Operation Timing Diagram
Table 17.  Block Protection Bits in EPCQ4A
Status Register Content Memory Content
TB Bit BP2 Bit BP1 Bit BP0 Bit Protected Area Unprotected Area
x 0 0 0 None All sectors
0 0 0 1 Sector 7 Sectors (0 to 6)
0 0 1 0 Sectors (6 to 7) Sectors (0 to 5)
0 0 1 1 Sectors (4 to 7) Sectors (0 to 3)
1 0 0 1 Sector 0 Sectors (1 to 7)
1 0 1 0 Sectors (0 to 1) Sectors (2 to 7)
1 0 1 1 Sectors (0 to 3) Sectors (4 to 7)
x 1 x x All sectors None
Table 18.  Block Protection Bits in EPCQ16A
Status Register Content Memory Content
TB Bit BP2 Bit BP1 Bit BP0 Bit Protected Area Unprotected Area
0 0 0 0 None All sectors
0 0 0 1 Sector 31 Sectors (0 to 30)
0 0 1 0 Sectors (30 to 31) Sectors (0 to 29)
0 0 1 1 Sectors (28 to 31) Sectors (0 to 27)
0 1 0 0 Sectors (24 to 31) Sectors (0 to 23)
0 1 0 1 Sectors (16 to 31) Sectors (0 to 15)
0 1 1 0 All sectors None
0 1 1 1 All sectors None
1 0 0 0 None All sectors
1 0 0 1 Sector 0 Sectors (1 to 31)
1 0 1 0 Sectors (0 to 1) Sectors (2 to 31)
1 0 1 1 Sectors (0 to 3) Sectors (4 to 31)
1 1 0 0 Sectors (0 to 7) Sectors (8 to 31)
1 1 0 1 Sectors (0 to 15) Sectors (16 to 31)
1 1 1 0 All sectors None
1 1 1 1 All sectors None
Table 19.  Block Protection Bits in EPCQ32A
Status Register Content Memory Content
TB Bit BP2 Bit BP1 Bit BP0 Bit Protected Area Unprotected Area
0 0 0 0 None All sectors
0 0 0 1 Sector 63 Sectors (0 to 62)
0 0 1 0 Sectors (62 to 63) Sectors (0 to 61)
0 0 1 1 Sectors (60 to 63) Sectors (0 to 59)
0 1 0 0 Sectors (56 to 63) Sectors (0 to 55)
0 1 0 1 Sectors (48 to 63) Sectors (0 to 47)
0 1 1 0 Sectors (32 to 63) Sectors (0 to 31)
0 1 1 1 All sectors None
1 0 0 0 None All sectors
1 0 0 1 Sector 0 Sectors (1 to 63)
1 0 1 0 Sectors (0 to 1) Sectors (2 to 63)
1 0 1 1 Sectors (0 to 3) Sectors (4 to 63)
1 1 0 0 Sectors (0 to 7) Sectors (8 to 63)
1 1 0 1 Sectors (0 to 15) Sectors (16 to 63)
1 1 1 0 Sectors (0 to 31) Sectors (32 to 63)
1 1 1 1 All sectors None
Table 20.  Block Protection Bits in EPCQ64A
Status Register Content Memory Content
TB Bit BP2 Bit BP1 Bit BP0 Bit Protected Area Unprotected Area
0 0 0 0 None All sectors
0 0 0 1 Sectors (126 to 127) Sectors (0 to 125)
0 0 1 0 Sectors (124 to 127) Sectors (0 to 123)
0 0 1 1 Sectors (120 to 127) Sectors (0 to 119)
0 1 0 0 Sectors (112 to 127) Sectors (0 to 111)
0 1 0 1 Sectors (96 to 127) Sectors (0 to 95)
0 1 1 0 Sectors (64 to 127) Sectors (0 to 63)
0 1 1 1 All sectors None
1 0 0 0 None All sectors
1 0 0 1 Sectors (0 to 1) Sectors (2 to 127)
1 0 1 0 Sectors (0 to 3) Sectors (4 to 127)
1 0 1 1 Sectors (0 to 7) Sectors (8 to 127)
1 1 0 0 Sectors (0 to 15) Sectors (16 to 127)
1 1 0 1 Sectors (0 to 31) Sectors (32 to 127)
1 1 1 0 Sectors (0 to 63) Sectors (64 to 127)
1 1 1 1 All sectors None
Table 21.  Block Protection Bits in EPCQ128A
Status Register Content Memory Content
TB Bit BP2 Bit BP1 Bit BP0 Bit Protected Area Unprotected Area
0 0 0 0 None All sectors
0 0 0 1 Sectors (252 to 255) Sectors (0 to 251)
0 0 1 0 Sectors (248 to 255) Sectors (0 to 247)
0 0 1 1 Sectors (240 to 255) Sectors (0 to 239)
0 1 0 0 Sectors (224 to 255) Sectors (0 to 223)
0 1 0 1 Sectors (192 to 255) Sectors (0 to 191)
0 1 1 0 Sectors (128 to 255) Sectors (0 to 127)
0 1 1 1 All sectors None
1 0 0 0 None All sectors
1 0 0 1 Sectors (0 to 3) Sectors (4 to 255)
1 0 1 0 Sectors (0 to 7) Sectors (8 to 255)
1 0 1 1 Sectors (0 to 15) Sectors (16 to 255)
1 1 0 0 Sectors (0 to 31) Sectors (32 to 255)
1 1 0 1 Sectors (0 to 63) Sectors (64 to 255)
1 1 1 0 Sectors (0 to 127) Sectors (128 to 255)
1 1 1 1 All sectors None

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