SPI Flash Memory Controller IP Core

Serial Peripheral Interface Flash Memory Controller

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The SPI Flash Memory Controller IP Core provides an industry-standard interface between a central processing unit (CPU) and an off-chip SPI flash memory device.

The controller has two separate slave ports: Data Port AHB-lite interface and Control Port APB interface. Data Port can be used by the CPU to read from, or write to, any memory location within the SPI flash.

Features

  • Two slave interfaces: Data Port AHB-lite interface and Control Port APB interface
  • Option to individually configure the data bus widths of Data Port and Control Port to 8 or 32 bits
  • Option to configure controller with Page Program/Read Buffer to speed up Page Program/Read
  • Configurable serial clock (sclk_o) frequency, SPI flash sector size, SPI flash page size and SPI flash command set

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Block Diagram

SPI Flash Memory Controller IP Core Block DiagramExpand Image

Performance and Size

Resource Utilization using LFMXO5-25-9BBG400C
Configuration ahb_hclk_i Fmax (MHz)1 apb_pclk_i Fmax (MHz)1 (MHz)* Registers LUTs2 EBRs
Default 200 167.62 963 1367 0
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Others = Default		 200 200 1051 2147 0
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Others = Default		 200 186.67 1010 1477 1
Enable Page Read Buffer: Checked,
Page Read Buffer Memory Type: EBR,
Others = Default 		200 155.23 1011 1474 1
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Page Buffer Interface: AHBL,
SCLK Rate: 15,
Others = Default 		163.03 187.51 1031 2143 0
Resource Utilization using LFMXO5-25-7BBG400C
Configuration ahb_hclk_i Fmax (MHz)1 apb_pclk_i Fmax (MHz)1 (MHz)* Registers LUTs2 EBRs
Default 152.46 114.22 963 1370 0
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Others = Default		 136.52 138.03 1051 2140 0
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Others = Default		 154.51 110.79 1010 1471 1
Enable Page Read Buffer: Checked,
Page Read Buffer Memory Type: EBR,
Others = Default 		131.56 101.55 1011 1473 1
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Page Buffer Interface: AHBL,
SCLK Rate: 15,
Others = Default 		103.16 114.53 1031 2146 0
Resource Utilization using LAV-AT-500E-3LFG1156I
Configuration ahb_hclk_i Fmax (MHz)1 apb_pclk_i Fmax (MHz)1 (MHz)* Registers LUTs2 EBRs
Default 263.3 116.23 963 1379 0
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Others = Default		 220.17 112.32 1051 1980 0
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Others = Default		 218.53 110.51 1010 1490 1
Enable Page Read Buffer: Checked,
Page Read Buffer Memory Type: EBR,
Others = Default 		211.78 101.17 1011 1480 1
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Page Buffer Interface: AHBL,
SCLK Rate: 15,
Others = Default 		154.58 112.55 1031 2007 0
Resource Utilization using LAV-AT-500E-1LFG1156I
Configuration ahb_hclk_i Fmax (MHz)1 apb_pclk_i Fmax (MHz)1 (MHz)* Registers LUTs2 EBRs
Default 190.99 98.53 963 1379 0
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Others = Default		 185.81 94.72 1051 1980 0
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Others = Default		 192.16 98.08 1010 1490 1
Enable Page Read Buffer: Checked,
Page Read Buffer Memory Type: EBR,
Others = Default 		170.62 91 1011 1480 1
Enable Page Program Buffer: Checked,
Enable Page Read Buffer: Checked,
Page Buffer Interface: AHBL,
SCLK Rate: 15,
Others = Default 		146.65 98.99 1031 2007 0

1. Fmax is generated when the FPGA design only contains SPI Flash Controller IP Core, and the target frequency is 100 MHz for ahb_hclk_i and 50 MHz for apb_pclk_i. These values may be reduced when user logic is added to the FPGA design.
2. The distributed RAM utilization is accounted for in the total LUT4s utilization. The actual LUT4 utilization is distribution among logic, distributed RAM, and ripple logic.

Ordering Information

The SPI Flash Memory Controller IP Core is available for free to use in Lattice Radiant design software.

Documentation

Quick Reference
TITLE NUMBER VERSION DATE FORMAT SIZE
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SPI Flash Memory Controller IP Core - Lattice Radiant Software
FPGA-IPUG-02134 1.4 1/16/2023 PDF 933.7 KB

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