EPCS4 datasheet(7/38 Pages) ALTERA

7 / 38 page

Chapter 3: Serial Configuration Devices (EPCS1, EPCS4, EPCS16, EPCS64, and EPCS128) Data Sheet

3–7

Serial Configuration Device Memory Access

Altera Corporation

Configuration Handbook (Complete Two-Volume Set)

Serial Configuration Device Memory Access

This section describes the serial configuration device’s memory array organization

and operation codes. Timing specifications for the memory are provided in the

“Timing Information” section.

Memory Array Organization

Table 3–2 provides details about the memory array organization in EPCS128, EPCS64,

EPCS16, EPCS4, and EPCS1.

Table 3–3 through Table 3–7 list the address range for each sector in EPCS128, EPCS64,

EPCS16, EPCS4, and EPCS1.

Table 3–2. Memory Array Organization in Serial Configuration Devices

Details

EPCS128

EPCS64

EPCS16

EPCS4

EPCS1

Bytes (bits)

16,777,216 bytes

(128 Mbits)

8,388,608 bytes

(64 Mbits)

2,097,152 bytes

(16 Mbits)

524,288 bytes

(4 Mbits)

131,072 bytes

(1 Mbit)

Number of sectors

128

Bytes (bits) per

sector

262,144 bytes

(2 Mbits)

65,536 bytes

(512 Kbits)

65,536 bytes

(512 Kbits)

65,536 bytes

(512 Kbits)

32,768 bytes

(256 Kbits)

Pages per sector

1,024

256

128

Total number of

pages

65,536

32,768

8,192

2,048

512

Bytes per page

256 bytes

Table 3–3. Address Range for Sectors in EPCS128 (Part 1 of 3)

Sector

Address Range (Byte Addresses in HEX)

Start

End

H'FC0000

H'FFFFFF

H'F80000

H'FBFFFF

H'F40000

H'F7FFFF

H'F00000

H'F3FFFF

H'EC0000

H'EFFFFF

H'E80000

H'EBFFFF

H'E40000

H'E7FFFF

H'E00000

H'E3FFFF

H'DC0000

H'DFFFFF

H'D80000

H'DBFFFF

H'D40000

H'D7FFFF

H'D00000

H'D3FFFF

H'CC0000

H'CFFFFF

H'C80000

H'CBFFFF

H'C40000

H'C7FFFF

H'C00000

H'C3FFFF

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