DK-DEV-5M570ZN Altera, DK-DEV-5M570ZN Datasheet - Page 122

• Manufacturer Part Number: DK-DEV-5M570ZN
• Description: KIT DEV MAX V 5M570Z
• Manufacturer: Altera
• Series: MAX® Vr
• Type: CPLDr

Specifications of DK-DEV-5M570ZN

• Contents: Board, Cable(s), Software and Documentation
• Silicon Manufacturer: Altera
• Core Architecture: CPLD
• Core Sub-architecture: MAX
• Silicon Core Number: 5M
• Silicon Family Name: MAX V
• Kit Contents: MAX V CPLD Development Board, USB Cable
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: 5M570ZF256
• Lead Free Status / Rohs Status: Compliant
• Other names: 544-2722

7–20
MAX V Device Handbook
No Erase
The no erase operation never erases the UFM contents. This method is recommended
when UFM does not require constant re-writing after its initial write of data. For
example, if the UFM data is to be initialized with data during manufacturing using
I
erase option and save LE resources from being used to create erase logic.
Read Operation
The read operation is initiated in the same manner as the write operation except that
the R/W bit must be set to 1. Three different read operations are supported:
■
■
■
After each UFM data has been read and transferred to the master, the UFM address
register is incremented for all single and multi-byte read operations.
Current Address Read
This read operation targets the current byte location pointed to by the UFM address
register.
Figure 7–15. Current Address Read Sequence
2
C, you may not require writing to the UFM again. In that case, you should use the no
Current Address Read (Single Byte)
Random Address Read (Single byte)
Sequential Read (Multi-Byte)
Figure 7–15
S – Start Condition
P – Stop Condition
A – Acknowledge
S
shows the current address read sequence.
Slave Address
‘1’ (read)
R/W
A
Chapter 7: User Flash Memory in MAX V Devices
Data
From Master to Slave
From Slave to Master
January 2011 Altera Corporation
Software Support for UFM Block
P