n25q064 Numonyx, n25q064 Datasheet - Page 56

• Manufacturer Part Number: n25q064
• Description: 64mb 1.8v, Multiple I/o, 4kb Subsector Erase, Xip Enabled, Serial Flash Memory With 108 Mhz Spi Bus Interface
• Manufacturer: Numonyx

Instructions
Table 13.
1. The Number of dummy clock cycles is configurable by user.
9.1.1
56/154
RDVECR
WRVECR
DP
RDP
Instruction
Instruction set: extended SPI protocol (page 2 of 2)
Read Identification (RDID)
The Read Identification (RDID) instruction allows to read the device identification data:
The manufacturer identification is assigned by JEDEC, and has the value 20h. The device
identification is assigned by the device manufacturer, and indicates the memory type in the
first byte (BBh), and the memory capacity of the device in the second byte (17h). The UID is
composed by 17 read only bytes, containing the length of the following data in the first byte
(set to 10h), 2 bytes of Extended Device ID (EDID) to identify the specific device
configuration (Top, Bottom or uniform architecture, Hold or Reset functionality), and 14
bytes of the Customized Factory Data (CFD) content. The CFD bytes are factory
programmed with a unique identification number for each single device. This area can be
accessed in read mode only. It is impossible to change the security number after it has been
written by manufacturing.
Any Read Identification (RDID) instruction while an Erase or Program cycle is in progress, is
not decoded, and has no effect on the cycle that is in progress.
The device is first selected by driving Chip Select (S) Low. Then, the 8-bit instruction code
for the instruction is shifted in. After this, the 24-bit device identification, stored in the
memory, the 17 bytes of UID content will be shifted out on Serial Data output (DQ1). Each
bit is shifted out during the falling edge of Serial Clock (C).
The instruction sequence is shown in Figure 10.
The Read Identification (RDID) instruction is terminated by driving Chip Select (S) High at
any time during data output.
When Chip Select (S) is driven High, the device is put in the Standby Power mode. Once in
the Standby Power mode, the device waits to be selected, so that it can receive, decode and
execute instructions.
Read Volatile Enhanced Configuration
Register
Write Volatile Enhanced Configuration
Register
Deep Power-Down
Release from Deep Power-Down
–
–
–
Manufacturer identification (1 byte)
Device identification (2 bytes)
A Unique ID code (UID) (17 bytes, of which 14 factory programmed
Description
1011 1001
1010 1011
0110 0101
0110 0001
Instruction
Code (BIN)
Micron Technology, Inc., reserves the right to change products or specifications without notice.
One-byte
Instruction
65h
61h
B9h
ABh
One-byte
(HEX)
Code
©2010 Micron Technology, Inc. All rights reserved.
0
0
Address
0
0
bytes
0
0
0
0
Dummy
N25Q064 - 1.8V
clock
cycle
1
0
0
1 to
bytes
Data
∞