5M1270ZT144C4N Altera, 5M1270ZT144C4N Datasheet - Page 134
5M1270ZT144C4N
Manufacturer Part Number
5M1270ZT144C4N
Description
ALTERA
Manufacturer
Altera
Series
MAX® Vr
Specifications of 5M1270ZT144C4N
Programmable Type
In System Programmable
Delay Time Tpd(1) Max
6.2ns
Voltage Supply - Internal
1.71 V ~ 1.89 V
Number Of Logic Elements/blocks
1270
Number Of Macrocells
980
Number Of Gates
-
Number Of I /o
114
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
144-LQFP
Lead Free Status / Rohs Status
Vendor undefined / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
5M1270ZT144C4N
Manufacturer:
ALTERA
Quantity:
200
Part Number:
5M1270ZT144C4N
Manufacturer:
ALTERA/阿尔特拉
Quantity:
20 000
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7–32
MAX V Device Handbook
WRDI (Write Disable)
After the UFM is programmed, WRDI can be issued to set WEN back to 0, disabling WRITE
and preventing inadvertent writing to the UFM. WRDI is issued through the following
sequence, as shown in
1. nCS is pulled low.
2. Opcode 00000100 is transmitted to set WEN to 0 in the status register.
3. After the transmission of the eighth bit of WRDI, the interface is in wait state
4. nCS is pulled back to high.
Figure 7–29. WRDI Operation Sequence
(waiting for nCS to be pulled back to high). Any transmission after this is ignored.
Figure
SCK
nCS
SI
SO
7–29:
MSB
0
1
High Impedance
Instruction
2
8-bit
04
3
H
4
5 6 7
Chapter 7: User Flash Memory in MAX V Devices
January 2011 Altera Corporation
Software Support for UFM Block
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