Altera User Flash Memory - Manual (Page 23)

Table 19: Memory Organization
Address Range Sector
1FFh 100h 1
0FFh 000h 0
Using and Accessing UFM Storage
Use the UFM to store data of different memory sizes and data widths. The UFM storage width is 16 bits,
however, you can implement different data widths or a serial interface using the ALTUFM IP core.
Table 20: Data Widths for Logic Array Interfaces
Interface Type Data Width (Bits) Logic Array Interface
Serial 8 or 16 SPI
Parallel Options of 3 to 16 Parallel
Serial 8 I2C
Serial 16 None
Figure 7: MAX II UFM Block Diagram and Interface Signals Block Diagram
OSC 4
Program
Erase
Control
UFM Sector 1
UFM Sector 0
:_
Address
Register
PROGRAM
ERASE
OSC_ENA
RTP_BUSY
BUSY
OSC
Data Register
UFM Block
DRDin DRDout
ARCLK
ARSHFT
ARDin
DRCLK
DRSHFT
16 16
9
UFM Operating Modes
There are three UFM block modes:
• Read/stream read
• Program (write)
Altera Corporation Altera User Flash Memory (ALTUFM) IP Core User Guide
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23 Using and Accessing UFM Storage
UG-040105
2014.08.18