EPCS4SI8 Altera, EPCS4SI8 Datasheet - Page 17

• Manufacturer Part Number: EPCS4SI8
• Description: IC CONFIG DEVICE 4MBIT 8-SOIC
• Manufacturer: Altera
• Series: EPCSr

Specifications of EPCS4SI8

• Programmable Type: In System Programmable
• Memory Size: 4Mb
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 544-1243-5

Chapter 3: Serial Configuration Devices (EPCS1, EPCS4, EPCS16, EPCS64, and EPCS128) Data Sheet
Serial Configuration Device Memory Access
Table 3–11. Block Protection Bits in EPCS16 (Part 1 of 2)
© December 2009
BP2
Bit
0
0
0
0
1
1
Status Register
Content
BP1
Bit
0
0
1
1
0
0
BP0
Altera Corporation
Bit
0
1
0
1
0
1
Resetting the write enable latch bit to 0 indicates that no write or erase cycle will be
accepted. Set the write enable latch bit to 1 before every write bytes, write status,
erase bulk, and erase sector operation.
The non-volatile block protect bits determine the area of the memory protected from
being written or erased unintentionally.
protected area in the serial configuration devices with reference to the block protect
bits. The erase bulk operation is only available when all the block protect bits are 0.
When any of the block protect bits are set to 1, the relevant area is protected from
being written by write bytes operations or erased by erase sector operations.
Table 3–9. Block Protection Bits in EPCS1
Table 3–10. Block Protection Bits in EPCS4
None
Upper 32nd (Sector 31)
Upper sixteenth (two sectors: 30 and 31)
Upper eighth (four sectors: 28 to 31)
Upper quarter (eight sectors: 24 to 31)
Upper half (sixteen sectors: 16 to 31)
BP2 Bit
BP1 Bit
Status Register Content
0
0
0
0
1
1
1
1
0
0
1
1
Status Register Content
BP1 Bit
Protected Area
0
0
1
1
0
0
1
1
BP0 Bit
0
1
0
1
BP0 Bit
0
1
0
1
0
1
0
1
None
Sector 3
Two sectors: 2 and 3
All sectors
Memory Content
None
Sector 7
Sectors 6 and 7
Four sectors: 4 to 7
All sectors
All sectors
All sectors
All sectors
Protected Area
Table 3–9
Protected Area
All sectors (32 sectors 0 to 31)
Lower 31/32nds (31 sectors: 0 to 30)
Lower 15/16ths (30 sectors: 0 to 29)
Lower seven-eighths (28 sectors: 0 to 27)
Lower three-quarters (24 sectors: 0 to 23)
Lower half (16 sectors: 0 to 15)
Configuration Handbook (Complete Two-Volume Set)
through
Memory Content
Memory Content
Unprotected Area
Table 3–13
All four sectors: 0 to 3
Three sectors: 0 to 2
Two sectors: 0 and 1
None
All eight sectors: 0 to 7
Seven sectors: 0 to 6
Six sectors: 0 to 5
Four sectors: 0 to 3
None
None
None
None
Unprotected Area
Unprotected Area
list the
3–17