EPCS4SI8 Altera, EPCS4SI8 Datasheet - Page 22

• 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

3–22
Figure 3–13. Read Silicon ID Operation Timing Diagram
Note to
(1) Only EPCS1, EPCS4, EPCS16, and EPCS64 support Read Silicon ID operation.
Configuration Handbook (Complete Two-Volume Set)
Figure
DCLK
ASDI
DATA
nCS
3–13:
Read Silicon ID Operation
The read silicon ID operation code is b'1010 1011, with the MSB listed first. Only
EPCS1, EPCS4, EPCS16, and EPCS64 support this operation. It reads the serial
configuration device’s 8-bit silicon ID from the DATA output pin. If this operation is
shifted in during an erase or write cycle, it is ignored and has no effect on the cycle
that is in progress.
Table 3–14
Table 3–14. Serial Configuration Device Silicon ID
The device implements the read silicon ID operation by driving nCS low then shifting
in the read silicon ID operation code followed by three dummy bytes on ASDI. The
serial configuration device’s 8-bit silicon ID is then shifted out on the DATA pin on the
falling edge of DCLK, as shown in
silicon ID operation by driving nCS high after the silicon ID has been read at least
once. Sending additional clock cycles on DCLK while nCS is driven low can cause the
silicon ID to be shifted out repeatedly.
0
High Impedance
1
Serial Configuration Device
2
Operation Code
3
lists the serial configuration device silicon IDs.
Chapter 3: Serial Configuration Devices (EPCS1, EPCS4, EPCS16, EPCS64, and EPCS128) Data Sheet
4
EPCS16
EPCS64
EPCS1
EPCS4
5
6
7
MSB
23
8
22
9
21
(Note 1)
10
Three Dummy Bytes
Figure
Silicon ID (Binary Value)
3
28
3–13. The device can terminate the read
2
b'0001 0000
b'0001 0010
b'0001 0100
b'0001 0110
29
1
30
0
31
MSB
7
32
6
33
Serial Configuration Device Memory Access
5
34
© December 2009
4
35
Silicon ID
3
36
2
37
1
38
0
39
Altera Corporation