EPCQ-A Serial Configuration Device Datasheet

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ID 683818
Date 10/01/2019
Public
Document Table of Contents
Document Table of Contents x
1. EPCQ-A Serial Configuration Device Datasheet
1. EPCQ-A Serial Configuration Device Datasheet x
1.1. Supported Devices 1.2. Features 1.3. Operating Conditions 1.4. Pin Information 1.5. Device Package and Ordering Code 1.6. Memory Array Organization 1.7. Memory Operations 1.8. Status Register 1.9. Summary of Operation Codes 1.10. Power Mode 1.11. Timing Information 1.12. Programming and Configuration File Support 1.13. Appendix: SFDP Register Definitions 1.14. Document Revision History for the EPCQ-A Serial Configuration Device Datasheet
1.3. Operating Conditions x
1.3.1. Absolute Maximum Ratings 1.3.2. Recommended Operating Conditions 1.3.3. DC Operating Conditions 1.3.4. AC Measurement Conditions 1.3.5. ICC Supply Current 1.3.6. Capacitance
1.4. Pin Information x
1.4.1. Pin-Out Diagram for EPCQ4A, EPCQ16A and EPCQ32A Devices 1.4.2. Pin-Out Diagram for EPCQ64A and EPCQ128A Devices 1.4.3. EPCQ-A Device Pin Description
1.5. Device Package and Ordering Code x
1.5.1. Package 1.5.2. Ordering Code
1.6. Memory Array Organization x
1.6.1. Address Range for EPCQ4A 1.6.2. Address Range for EPCQ16A 1.6.3. Address Range for EPCQ32A 1.6.4. Address Range for EPCQ64A 1.6.5. Address Range for EPCQ128A
1.7. Memory Operations x
1.7.1. Timing Requirements
1.8. Status Register x
1.8.1. Read Status Operation 1.8.2. Write Status Operation
1.9. Summary of Operation Codes x
1.9.1. Read Bytes Operation (03h) 1.9.2. Fast Read Operation (0Bh) 1.9.3. Extended Dual Input Fast Read Operation (BBh) 1.9.4. Extended Quad Input Fast Read Operation (EBh) 1.9.5. Read Device Identification Operation (9Fh) 1.9.6. Read Silicon Identification Operation (ABh) 1.9.7. Write Enable Operation (06h) 1.9.8. Write Disable Operation (04h) 1.9.9. Write Bytes Operation (02h) 1.9.10. Quad Input Fast Write Bytes Operation (32h) 1.9.11. Erase Bulk Operation (C7h) 1.9.12. Erase Sector Operation (D8h) 1.9.13. Erase Subsector Operation (20h) 1.9.14. Read SFDP Register Operation (5Ah)
1.11. Timing Information x
1.11.1. Write Operation Timing 1.11.2. Read Operation Timing
1. EPCQ-A Serial Configuration Device Datasheet

1.9.6. Read Silicon Identification Operation (ABh)

This operation reads the 8-bit silicon ID of the EPCQ-A device from the DATA1 output pin. If this operation is shifted in during an erase or write cycle, it is ignored and does not affect the cycle that is in progress.

Note: This operation is applicable to EPCQ4A, EPCQ16A and EPCQ64A devices only.

The device implements the read silicon ID operation by driving the nCS signal low and then shifting in the read silicon ID operation code, followed by three dummy bytes on the DATA0 pin. The 8-bit silicon ID of the EPCQ-A device is then shifted out on the DATA1 pin at falling edges of the DCLK signal. The device can terminate the read silicon ID operation by driving the nCS signal high after reading the silicon ID at least one time. Sending additional clock cycles on DCLK while nCS is driven low can cause the silicon ID to be shifted out repeatedly.

Table 23.  EPCQ-A Silicon Identification
EPCQ-A Device Silicon ID (Binary Value)
EPCQ4A b'0001 0010
EPCQ16A b'0001 0100
EPCQ64A b'0001 0110
Figure 11. Read Silicon Identification Operation Timing Diagram
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