5M1270ZT144C4N Altera, 5M1270ZT144C4N Datasheet - Page 127

• 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

Chapter 7: User Flash Memory in MAX V Devices
Software Support for UFM Block
Table 7–11. Status Register Format
January 2011 Altera Corporation
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Note to
(1) For more information about status register bits BP1 and BP0, refer to
Position
Table
7–11:
Status
nRDY
WEN
BP1
BP0
X
X
X
X
Opcodes
Table 7–10
opcode must be provided. Otherwise, the interface assumes that the master device
has internal logic errors and ignores the rest of the incoming signals. When nCS is
pulled back to high, the interface is back to normal. nCS should be pulled low again
for a new service request.
Table 7–10. Instruction Set for SPI
The READ and WRITE opcodes are instructions for transmission, which means the data
will be read from or written to the UFM.
WREN, WRDI, RDSR, and WRSR are instructions for the status register, where they do not
have any direct interaction with UFM, but read or set the status register within the
interface logic. The status register provides status on whether the UFM block is
available for any READ or WRITE operation, whether the interface is WRITE enabled, and
the state of the UFM WRITE protection.
the read only implementation of ALTUFM SPI (Base or Extended mode), the status
register does not exist, saving LE resources.
The following sections describe the instructions for SPI.
WREN
WRDI
RDSR
WRSR
READ
WRITE
SECTOR-ERASE
UFM-ERASE
Name
Default at Power-Up
lists the 8-bit instruction opcodes. After nCS is pulled low, the indicated
0
0
0
0
0
0
0
0
00000110
00000100
00000101
00000001
00000011
00000010
00100000
01100000
Opcode
Table 7–12
Indicate the current level of block write protection
Indicate the current level of block write protection
1 = Busy, UFM WRITE or ERASE cycle in progress
0 = No UFM WRITE or ERASE cycle in progress
Table 7–11
Enable Write to UFM
Disable Write to UFM
Read Status Register
Write Status Register
Read data from UFM
Write data to UFM
Sector erase
Erase the entire UFM block (both sectors)
and
Table 7–13 on page
0= SPI WRITE disabled state
1= SPI WRITE enabled state
lists the status register format. For
Description
—
—
—
—
Operation
7–34.
MAX V Device Handbook
(1)
(1)
7–25