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Related Information

Altera IP Release Notes

Functional Description

This chapter describes the functional description and the design examples of the ALTUFM IP core. This

section also includes the ports descriptions of the ALTUFM IP core. You can use the ports to customize the

ALTUFM IP core according to your application.

User Flash Memory

User flash memory (UFM) provides access to the serial flash memory blocks in MAX II and MAX V devices.

The UFM can be used like a serial EEPROM for storing up to 8,192 bits of non-volatile information. The

hardware interface is a simple 12-pin protocol, providing interfaces similar to the industry standards for

serial EEPROMs. The UFM connects to the logic array through the MultiTrack

™

interconnect, allowing

any logic cell to interface with the UFM. The UFM features two sectors for partitioned sector erase, a built-

in internal oscillator that drives internal device logic; program, erase, and busy signals, auto-increment

addressing, and a serial interface to the internal device logic with a programmable interface. The ALTUFM

IP core, available in Altera’s Quartus

II software, provides interface logic for a subset of these interfaces

(parallel and SPI).

Any interfaces not provided by the IP core or design examples require you to create user logic to

bridge the UFM block to your desired interface protocol.

Note:

Each UFM array is organized as two separate sectors, with 4,096 bits per sector. Each sector can be erased

independently.

Table 18: MAX II UFM Array Size

Data WidthAddress BitsSectorsTotal BitsDevice

1692 (4096 bits per

sector)

8,192EPM240

1692 (4096 bits per

sector)

8,192EPM570

1692 (4096 bits per

sector)

8,192EPM1270

1692 (4096 bits per

sector)

8,192EPM2210

Memory Organization Map

The memory organization map includes 512 locations with 9 bits, addressing a range of 000h to 1FFh. Each

location stores 16-bit wide data. The most significant bit (MSB) of the address register indicates the sector

in operation.

Altera User Flash Memory (ALTUFM) IP Core User Guide

Altera Corporation

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Functional Description

2014.08.18

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