Chapter 2: MAX V Architecture
2–21
User Flash Memory Block
User Flash Memory Block
MAX V devices feature a single UFM block, which can be used like a serial EEPROM
for storing non-volatile information up to 8,192 bits. The UFM block connects to the
logic array through the MultiTrack interconnect, allowing any LE to interface to the
UFM block. Figure 2–15 shows the UFM block and interface signals. The logic array is
used to create customer interface or protocol logic to interface the UFM block data
outside of the device. The UFM block offers the following features:
■
■
■
■
■
■
Non-volatile storage up to 16-bit wide and 8,192 total bits
Two sectors for partitioned sector erase
Built-in internal oscillator that optionally drives logic array
Program, erase, and busy signals
Auto-increment addressing
Serial interface to logic array with programmable interface
Figure 2–15. UFM Block and Interface Signals
UFM Block
PROGRAM
ERASE
RTP_BUSY
BUSY
Program
Erase
Control
_
:
OSC
4
OSC_ENA
OSC
UFM Sector 1
UFM Sector 0
9
ARCLK
Address
Register
16
16
ARSHFT
ARDin
DRDin
Data Register
DRDout
DRCLK
DRSHFT
December 2010 Altera Corporation
MAX V Device Handbook
ALTERA [ ALTERA CORPORATION ]
