EPM2210 Altera Corporation, EPM2210 Datasheet - Page 30

• Manufacturer Part Number: EPM2210
• Description: (EPMxxxx) JTAG & In-System Programmability
• Manufacturer: Altera Corporation

User Flash Memory Block
2–24
MAX II Device Handbook, Volume 1
f
UFM Storage
Each device stores up to 8,192 bits of data in the UFM block.
shows the data size, sector, and address sizes for the UFM block.
There are 512 locations with 9-bit addressing ranging from 000h to 1FFh.
Sector 0 address space is 000h to 0FFh and Sector 1 address space is from
100h to 1FFh. The data width is up to 16 bits of data. The Quartus II
software automatically creates logic to accommodate smaller read or
program data widths. Erasure of the UFM involves individual sector
erasing (i.e., one erase of sector 0 and one erase of sector 1 is required to
erase the entire UFM block). Since sector erase is required before a
program or write, having two sectors enables a sector size of data to be
left untouched while the other sector is erased and programmed with
new data.
Internal Oscillator
As shown in
contains an oscillator. The dedicated circuitry uses this internally for its
read and program operations. This oscillator’s divide by 4 output can be
driven out of the UFM block to the logic array for interface logic clock
source or for general-purpose logic clocking. The OSC output signal
frequency ranges from 3.3 to 5.5 MHz (preliminary), and its exact
frequency of operation is not programmable.
Program, Erase & Busy Signals
The UFM block’s dedicated circuitry automatically generates the
necessary internal program and erase algorithm once the PROGRAM or
ERASE input signals have been asserted. The PROGRAM or ERASE signal
must be asserted until the busy signal deasserts, indicating the UFM
internal program or erase operation has completed. The UFM block also
supports JTAG as the interface for programming and/or reading.
For more information on programming and erasing the UFM block, see
the chapter on Using User Flash Memory in MAX II Devices.
EPM240
EPM570
EPM1270
EPM2210
Table 2–3. UFM Array Size
Device
Core Version a.b.c variable
Figure
Total Bits
8,192
2–15, the dedicated circuitry within the UFM block
(4,096 bits/sector)
Sectors
2
Address Bits
9
Altera Corporation
December 2004
Table 2–3
Data Width
16